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SnapScale/RAINcloudOS 4.1 Administrator’s Guide

7 - System Monitoring

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Содержание SnapScale

Страница 1: ...Overland Storage SnapScale Administrator s Guide For Appliances Running RAINcloudOS Version 4 1 October 2014 10400455 002...

Страница 2: ...are the property of their respective owners The names of companies and individuals used in examples are fictitious and intended to illustrate the use of the software Any resemblance to actual compani...

Страница 3: ...apScale X Series nodes It can also be upgraded from a previously installed version of RAINcloudOS version 3 0 or later Product Documentation Software Updates SnapScale product documentation and additi...

Страница 4: ...ion that the user needs to know to avoid damaging or permanently deleting data or causing physical damage to the hardware or system IMPORTANT An Important note is a type of note that provides informat...

Страница 5: ...and Configuration Connecting for the First Time 21 Connect Using the Node Name 21 Connect Using SSM 22 Setup a New SnapScale Cluster via Wizard 23 Step 1 Select SnapScale Nodes 24 Step 2 Client Networ...

Страница 6: ...hentication 62 Connect from a Windows Client 63 Connect a Mac OS X Client Using SMB 64 Configure Windows SMB Networking 64 NFS Access 67 Assigning Share Access to NFS Users 68 Enable NFS Access to the...

Страница 7: ...15 iSCSI Disks 115 Configuring iSCSI Initiators 115 iSCSI Configuration on the SnapScale 116 Create iSCSI Disks 119 Edit iSCSI Disk Properties 121 Delete an iSCSI Disk 121 Configuring VSS VDS for iSCS...

Страница 8: ...apping 181 Remove Mappings 182 Remove Missing ID Mappings 185 Filesystem Updates 187 Home Directories 188 Configure Home Directories 189 Chapter 7 System Monitoring System Status 192 SnapScale Status...

Страница 9: ...d Replication Solutions 244 Snap Enterprise Data Replicator 244 Snap EDR Usage 245 Configuring Snap EDR 245 Scheduling Jobs in Snap EDR 246 Backup via SMB or NFS 246 Off the Shelf Backup Solutions 246...

Страница 10: ...forming System Resets Without Network Access 257 Networking Issues 257 Miscellaneous Issues 259 Phone Home Support 260 Appendix D RAINcloudOS Ports Appendix E Command Line Interface SnapCLI Syntax 266...

Страница 11: ...tes files to optimize performance and Spare Distributor evenly distributes spare drives across nodes Files can be accessed either through NFS or CIFS SMB protocols SnapScale Flexible Volumes automatic...

Страница 12: ...ta for redundancy Cluster Name the name visible to network clients and used to connect to the cluster similar to a server name and resolvable to node IP addresses via round robin DNS Cluster Managemen...

Страница 13: ...To form a SnapScale cluster all nodes must be running the same version of RAINcloudOS To join an already configured SnapScale cluster an Uninitialized node must have the same version of RAINcloudOS a...

Страница 14: ...10 8 10 9 Sun Solaris 10 and 11 HP UX 11 AIX 5 3 6 Red Hat Enterprise Linux RHEL 4 x 5 x 6 x Novell SuSE Linux Enterprise Server SLES 10 x 11 x Data Protection Snapshots for immediate or scheduled po...

Страница 15: ...ID mapping and home directories BitTorrent Sync BitTorrent Sync can be used to replicate data between the SnapScale cluster and other servers or workstations Windows Security Model Volumes can be con...

Страница 16: ...to several client platforms including Windows Mac OS X and Linux Refer to the SnapServer Manager User Guide for details on discovering and configuring SnapScale clusters Client and Storage Networks S...

Страница 17: ...for failover For connections between 10GbE cards and 10GbE switches use either direct attached copper cables or fibre cables with SFP modules pre installed in the card and switch ports NOTE If using f...

Страница 18: ...ht 10GbE card ports for the Storage connections The 1GbE ports are not used Configuration Node GbE Ports Network Switch Basic 1GbE X2 Ports 1 2 Client public Slot 2 1GbE Card ports 3 4 Storage private...

Страница 19: ...Client network bottom two for Storage Single 10GbE The single card 10GbE configuration uses the two 1GbE ports for the Client connection and the two 10GbE ports on the card for the Storage connections...

Страница 20: ...n uses the left 10GbE card ports for the Client connections and the right 10GbE card ports for the Storage connections The 1GbE ports are not used Configuration Node GbE Ports Network Switch Dual 10Gb...

Страница 21: ...is found on the network the node defaults to an IP address in the range of 169 254 xxx xxx and is labeled as ZeroConf in SnapServer Manager SSM You may not be able to see Uninitialized nodes on your...

Страница 22: ...not have a DHCP server there might be a delay before the node appears on the network NOTE To distinguish multiple SnapServers and SnapScale nodes you may need to find their default names as explained...

Страница 23: ...n of a new cluster click the Create a New SnapScale box The Initial Setup Wizard consists of several steps Step 1 Select SnapScale Nodes select the nodes to be included in the cluster Step 2 Client Ne...

Страница 24: ...twork interfaces for all the nodes must be located on the same public network subnet and the Storage network interfaces for all nodes must be located on the same private Storage network subnet The nod...

Страница 25: ...nd Storage Inc 25 SnapScale RAINcloudOS 4 1 Administrator s Guide 2 Initial Setup and Configuration Step 2 Client Network Configuration Overview Review the information about setting up your Client net...

Страница 26: ...r s Guide 2 Initial Setup and Configuration Step 3 Choose Client Network Static TCP IP Settings Use this step to specify the static TCP IP settings that will be common to all nodes in the cluster Then...

Страница 27: ...a set of static IP addresses one for each node and one for the Management IP Use this page to specify the static IP addresses for each of your nodes and for the SnapScale Management IP address used t...

Страница 28: ...nitial Setup and Configuration The Populate Static IP Addresses button can be used to automatically enter a sequential list of static IP addresses Just enter an IP address on the subnet and click Popu...

Страница 29: ...ect to the cluster The default name is Nodennnnnnn where nnnnnnn is the appliance number of the node used to create the cluster SnapScale Description This optional field provides a place to define the...

Страница 30: ...ocal computer Spare Disks Allocation Check the box and select the number of spare disks you want to reserve A spare disk is used to automatically replace a failed Peer Set member If there are unused d...

Страница 31: ...e default NTP servers below If you intend to join the cluster to a Windows domain configure the cluster using the manual settings to set the date and time Otherwise configure the cluster to synchroniz...

Страница 32: ...2 SnapScale RAINcloudOS 4 1 Administrator s Guide 2 Initial Setup and Configuration NOTE If you uncheck the box for reserving space for snapshots an alert is displayed to remind you that the feature w...

Страница 33: ...dOS 4 1 Administrator s Guide 2 Initial Setup and Configuration Click Create New SnapScale to complete the process A confirmation page is shown Click Create New SnapScale again to create the cluster A...

Страница 34: ...ress a completion page is displayed stating that a share was created and suggesting UPS units be enabled To enhance security you are asked to change the default administrator password after the cluste...

Страница 35: ...ng back in the Registration page is displayed to facilitate activating your warranty Complete the registration fields and then click Download Registration File Email that file SnapScaleRegistration cs...

Страница 36: ...e DNS resolves lookups for the cluster name via round robin Join an Existing SnapScale Cluster via Wizard IMPORTANT While the Initial Setup Wizard can be used to add one or more new nodes to an existi...

Страница 37: ...e and all other discovered new nodes can be easily added to the cluster See Adding Nodes on page 127 for more information You are then directed to select the nodes to add set the static IP addresses a...

Страница 38: ...ess the Web Management Interface The Home page displays the following icons and options Icons Options Description Change Password Click this icon to access the password change page Passwords are case...

Страница 39: ...rs and nodes on other subnets You can access these servers clusters and nodes by clicking the listed name or IP address SnapExtensions Click this to view the SnapExtensions page where you can acquire...

Страница 40: ...urs or until after feature is run whichever is first Hide Suppresses the alert It will not be shown again until after the feature called out in the alert is run and a new alert for that feature is gen...

Страница 41: ...the pages are each covered in detail in the following chapters To close the site map click either Close or outside the map Contact Hardware Software Information From the Web Management Interface click...

Страница 42: ...the configuration options for a SnapScale cluster of three or more nodes The four options for cluster settings are found under the SnapScale tab They can also be accessed using the site map icon Topic...

Страница 43: ...ace to define the cluster in the overall scheme of your network and better identify the cluster on a LAN Data Replication Count The data replication count establishes the level of data redundancy in t...

Страница 44: ...earlier date and time the change does not automatically propagate to any scheduled events you have already set up for snapshot antivirus or Snap EDR operations These operations will continue to run b...

Страница 45: ...e you to log back in to the Web Management Interface when done 2 To use this SnapScale as an NTP server check the enable box 3 From the drop down list select the time zone NOTE RAINcloudOS automatical...

Страница 46: ...lient is configured to connect via SSH v2 You will automatically be placed in the CLI shell UPS Protection SnapScale supports automatic shutdown when receiving a low power warning from an APC uninterr...

Страница 47: ...e UPS must be configured to provide power for at least five minutes after entering a low battery condition Edit UPS Properties To manage the network UPS devices click UPS Properties NOTE If UPS device...

Страница 48: ...trator name default is apc APC Authentication Phrase found under low battery shutdown configuration in the APC UPS interface it is NOT the Administrator password UPS Type Third column in Node table Us...

Страница 49: ...vice To change the settings of a network UPS device 1 Select a device in the Network UPS Devices field to change 2 Click Change 3 Edit any of the three options for the device 4 Click Change again Any...

Страница 50: ...king and Link Aggregation 802 3ad Network file protocols control how network clients can access the cluster Access to the cluster s storage space is provided via Windows SMB Unix NFS FTP FTPS and the...

Страница 51: ...s in the Web Management Interface Network Information Browse to Network Information to access the Network Information page that displays either the Client or Storage network settings for SnapScale and...

Страница 52: ...aining name and IP address mapping tables Bonding Status Shows Load Balance ALB Failover Switch Trunking or Link Aggregation 802 3ad as the selected bonding Management IP Address The IP address config...

Страница 53: ...cast IP Address Multicast address used for inter node cluster messaging Node specific Storage Network Information Section Show Hide Disabled Ethernet Ports Use the link on the right above the table to...

Страница 54: ...ides configuration of the common cluster network settings the static Management IP address and the pool of static IP addresses to automatically assign to cluster nodes NOTE If the Client network runs...

Страница 55: ...of the gateway is the hardware or software that bridges the gap between two otherwise unroutable networks It allows data to be transferred among computers that are on different subnets DNS Domain Name...

Страница 56: ...tatic link aggregation Link Aggregation 802 3ad This method of combining or aggregating multiple network connections in parallel is used to increase throughput beyond what a single connection could ha...

Страница 57: ...figured restart the cluster normally by turning the nodes back on Configure the Client Switch for Load Balancing If you select either Switch Trunking or Link Aggregation 802 3ad network bonding config...

Страница 58: ...over and ALB the cluster must reboot If changing the Storage network to or from Switch Trunking or Link Aggregation 802 3ad the cluster must be shut down completely the Storage network switches reconf...

Страница 59: ...cloudOS 4 1 Administrator s Guide 4 Network Settings Example of Cabling for ALB Switch Trunking or Link Aggregation 802 3ad Utility IP Address To assign an additional static IP address to a specific n...

Страница 60: ...er host record for the cluster name Only one Utility IP address can exist on a cluster The Web Management Interface will not allow a new Utility IP address to be created if a Utility IP address curren...

Страница 61: ...rity settings are configured on the Network Windows SMB page of the Web Management Interface You can configure these settings as a member of a Workgroup or an Active Directory Domain as shown in these...

Страница 62: ...nd protocols can still see these shares To completely hide shares from visibility from any protocols use the hidden share option under Advanced Share Properties when creating a new share or modifying...

Страница 63: ...rk Windows SMB page in the Web Management Interface contains an option that allows unknown users to access the SnapScale cluster using the guest account Connect from a Windows Client Windows clients c...

Страница 64: ...d Distribution on page 56 smb cluster_name smb node_ip_address Tip To disconnect from the SnapScale cluster drag its icon into the Trash You can also browse the clusters in the Finder file window unde...

Страница 65: ...to allow unknown users or users explicitly logging in as Guest to access the SnapScale using the guest account Clear the box to disable this feature Enable Opportunistic Locking Enabled by default Opp...

Страница 66: ...nter the domain name to which the cluster belongs NOTE Windows 2000 domain controllers must run SP2 or later Administrator Name Administrator Password If joining a domain enter the user name and passw...

Страница 67: ...able to serve as the Master Browser for a workgroup Clear the box to disable this feature Allow Root Authentication Check the box to allow root login to the cluster Clear the box to disable this featu...

Страница 68: ...t user level share access control but rather supports host and subnet based access control NFSv4 supports user level access control via Kerberos configuration but otherwise uses the same form of host...

Страница 69: ...ame localdomain is shown in the field If necessary you can change it CAUTION This setting is used by the NFSv4 IDMAP daemon and must be set to the same value on all NFSv4 clients and servers for prope...

Страница 70: ...rb5 gss krb5i and gss krb5p are automatically added to the NFS access entries for each NFS enabled share Option Description KDC Host Name Enter the host name of the Kerberos server for example kerbero...

Страница 71: ...such you must use the LDAP directory to make modifications NOTE A SnapScale cluster currently can t be configured to authenticate users against an LDAP directory NIS Network Information Service is a...

Страница 72: ...mmediately If NIS is enabled you are warned that existing quotas or ID mappings for NIS users will be applied automatically to LDAP users and groups that have the same UID or GID 7 Click Enable LDAP t...

Страница 73: ...o Network LDAP NIS The default LDAP database type page is shown 2 From the User Database Type drop down list select NIS 3 Check Enable NIS 4 Edit the settings shown in the following table 5 Click OK t...

Страница 74: ...al user accounts for FTP users For FTPS it is recommended that your FTPS client application use explicit FTPS such as FTPES or Auth TLS NOTE If standard FTP is enabled only the data channel is encrypt...

Страница 75: ...P root directory SNMP Configuration The SnapScale cluster can act as an SNMP agent SNMP managers collect data from agents and generate statistics and other monitoring information for administrators Ag...

Страница 76: ...lowing products have been successfully tested with SnapScale clusters CA Unicenter TNg HP Open View and Tivoli NetView Trap Initiating Action coldStart Whenever SNMP is enabled and a node boots linkDo...

Страница 77: ...only community string or accept the default snap_public NOTE As a precaution against unauthorized access Overland Storage recommends that you create your own community string Location Optionally enter...

Страница 78: ...nticate to the cluster Configuring HTTP HTTPS You can require web authentication disable HTTP non secure access and enable the Web Root feature All HTTP access is made via the root node and the Manage...

Страница 79: ...n the browser field http cluster_name or http IP address In addition files and directories underneath the directory you specify as the Web Root can be accessed by reference relative to http cluster_na...

Страница 80: ...ow Directory Listings If Allow Directory Listings is checked and no user defined index pages are configured or present the browser opens to a page allowing browsing of all directories underneath the W...

Страница 81: ...the browser address field http node_name or ip address config You are prompted for your User ID and password then you are placed into the Web Management Interface If you need to access the Web View p...

Страница 82: ...on a Windows server Note the IP address of the server or workstation on which the iSNS service is installed 2 Configure iSNS on the SnapScale cluster a On the Network iSNS page check the Enable iSNS b...

Страница 83: ...cover iSCSI targets via the iSNS server NOTE After you have completed this procedure all the iSCSI targets on the SnapScale cluster automatically appear in the Microsoft Initiators target list Update...

Страница 84: ...5 Storage Options From the storage default page Storage Settings you can access and configure the storage options for your SnapScale cluster including nodes and drives Topics in Storage Options Peer S...

Страница 85: ...ased on the configuration settings the additional drives are either used to create more peer sets or left as hot spares Nodes can be removed from a cluster for replacement with a new node and the driv...

Страница 86: ...thout administrator intervention If a peer set is missing one drive but at least one other drive is available the peer set continues to be accessible but is in degraded mode This table shows the diffe...

Страница 87: ...data on the peer set it continues to operate as is Data Replication Count is an administrator specified cluster wide count of the degree of redundancy of data on the cluster The Data Replication Count...

Страница 88: ...may be deleted if Any peer set member drive runs out of snapshot space A second member of a peer set containing unique snapshot data fails even though the main file system data may still be healthy P...

Страница 89: ...o view the Disks page and identify the specific disk drive s location Member 2 Shows the node drive slot number and the size of the second member of this peer set Click to view the Disks page and iden...

Страница 90: ...ght Displays the quantity set for spare drives Clicking this link takes you to the SnapScale Properties page to edit the setting NOTE This setting may not equal the number of spare drives currently di...

Страница 91: ...etects an uneven distribution of spare drives an alert banner is displayed in the Web Management Interface and the Spare Distributor page is enabled NOTE You can click Later to turn off the alert for...

Страница 92: ...an alert you can click the Spare Distributor link in the alert to go directly to the page 2 Click the Start Spare Distributor button to start the process The Spare Distributor redistributes spares an...

Страница 93: ...ess until completed Data Balancer Data Balancer formerly Capacity Balancer redistributes peer set utilization by moving data from more to less heavily used peer sets Maintaining a balance of peer set...

Страница 94: ...Sets Data Balancer If responding to an alert you can click the Data Balancer link in the alert to go directly to the page 2 Review the default File Size Limit and change it if needed The File Size Lim...

Страница 95: ...lity A table is displayed showing that the Data Balancer is running and the percent completed If needed click Stop Data Balancer to end the operation NOTE The cluster continues to be available for cli...

Страница 96: ...ll volumes share the same cluster storage space and are thinly provisioned to provide better utilization rates of the space Volumes can be configured with a maximum size setting quota to prevent one v...

Страница 97: ...ptions It is recommended to enter a Volume Name to easily identify the specific volume If desired keep the default of No Limit to allow the volume to consume an unlimited amount of cluster storage Oth...

Страница 98: ...are only shown if snapshot space has been reserved 5 Enter the appropriate data and select the necessary options then click Create Share Additional options can be accessed by clicking the Advanced Sh...

Страница 99: ...Volume Size There are two options controlling the maximum size of a volume No Limit This is the recommended option because it allows the volume to consume space as needed Limit Volume to Establish a...

Страница 100: ...Deleting Volumes To delete a volume at the Volume Properties page click the Delete Volume button At the confirmation page click the Delete Volume button again You are returned to the Volumes page and...

Страница 101: ...and groups there are no pre assigned default quotas on the SnapScale When quotas are assigned you can assign a default space or file quota for all users or allow all users to have unlimited space on...

Страница 102: ...make changes choose to either use the entire disk or a space of a specific size For a specific size enter the maximum amount and select the units Click OK to accept Default File Quota Page To make cha...

Страница 103: ...in that volume who do not have a specific quota assigned to them A text string the text strings No space limit and or No file limit are displayed when quotas are enabled but the default space size and...

Страница 104: ...95 used 2 Select Find All or Find When entering a search string for Find Returned results will include all users and groups whose name contains the string entered To search a specific Windows or NIS d...

Страница 105: ...ption to this is LDAP NIS groups They don t use a volume default quota so no limit without parentheses is shown If Windows domain users or groups have been ID mapped to local LDAP or NIS users or grou...

Страница 106: ...the search wizard 3 To search for a user or LDAP NIS group select the local or domain option from the Search drop down list enter the search string or select Find All and click Search NOTE For domains...

Страница 107: ...search by using a more specific string to return the names desired On the rare occasion you need to search for a Windows domain that s not listed remote domain select a Windows domain from the Search...

Страница 108: ...n for using the default user space or file quota Editing or Removing Quotas NOTE Any changes override the default volume quota for this user or LDAP NIS group To edit or remove quotas of users or grou...

Страница 109: ...ion for the default space or file quotas 5 Click OK Snapshots A snapshot is a consistent stable point in time image of the cluster storage space that can be backed up independent of activity on the cl...

Страница 110: ...er set member drive is not necessarily identical to snapshot space of other drives in the same peer set This is most likely to occur if two or more drives in the same peer set have recently failed eve...

Страница 111: ...apshot The process involves defining snapshot parameters and scheduling NOTE Do not take more snapshots than your system can store or more than 250 snapshots Under normal circumstances nine or ten sna...

Страница 112: ...lf you greatly reduce the risk of archiving inconsistent data To Create a Snapshot Using the Snapshots page in the Web Management Interface you can create a snapshot now later or on a recurring schedu...

Страница 113: ...shot to run at a later time it appears in the Scheduled Snapshots table Adjusting Snapshot Space NOTE Once the SnapScale cluster is created the storage space reserved for snapshots can only be decreas...

Страница 114: ...ecurity tab See Shares on page 147 for details Scheduling Snapshots To view when snapshots are currently scheduled to occur click Snapshot Schedules The Snapshot Schedules page shows a list of any sch...

Страница 115: ...f SCSI packets in Transmission Control Protocol TCP and their transmission via IP On SnapScale clusters an iSCSI disk consumes cluster storage space as a single large file but appears to a client mach...

Страница 116: ...devices that respond to the initiators requests for data The interaction between the initiator and target mandates a server client model where the initiator and the target communicate with each other...

Страница 117: ...result in data corruption Only enable Multi Initiator Support if your environment or application supports it It functions as a reminder that data corruption is possible if this option is used when cre...

Страница 118: ...10 com snapscale clustername blockdevice nnn where clustername is the name of the SnapScale cluster blockdevice is the internal identifier of the iSCSI disk on the target SnapScale cluster and nnn is...

Страница 119: ...Disks 1 Navigate to Storage iSCSI and click Create iSCSI Disk 2 Enter the iSCSI settings for the disk name and size 16GB minimum You can accept the default name or enter a new one using up to 20 alpha...

Страница 120: ...characters 5 Click the Create iSCSI Disk button 6 At the confirmation page verify the settings and click the Create iSCSI Disk button again to complete the process You are returned to the iSCSI page a...

Страница 121: ...t not decrease the size of the iSCSI disk if space is available Enable or disable support for multiple initiators Enable or disable CHAP logon 2 Click OK to accept the changes CAUTION The consistency...

Страница 122: ...ich the iSCSI disk resides They are not related to RAINcloudOS snapshots as described in Snapshots on page 109 The VSS iSCSI snapshot rollback feature is not currently supported The VDS hardware provi...

Страница 123: ...ly qualified name for example myclientname mydomain com b Repeat Step a for any other hostnames you want to add c When you have finished adding VSS clients click OK 3 Install the VSS hardware provider...

Страница 124: ...the SnapScale cluster a Go to Storage iSCSI and click VSS VDS Access b At VSS VDS Access Control enter the VSS client hostname to which you want to grant access and click Add The client hostname is n...

Страница 125: ...e nodes provides access to the same data as any other cluster node To balance network client access to the nodes enter an A record to the DNS pointing to the cluster name for each IP address in the no...

Страница 126: ...Node Properties page is shown with details of that particular node From this page you can Flash the node drive LEDs to help identify the node Change the node description View the drives in the node R...

Страница 127: ...available that consist of either two or three additional nodes and all the necessary cables Documentation is included with each node that details how to install cable and power up the new node Once in...

Страница 128: ...art of the cluster and those being added must be attached to the same Client subnet No expansion units can be attached to a node The appropriate ports on the node must be available to create the prope...

Страница 129: ...nded to accept all the nodes to ensure the optimum configuration If the node bond type doesn t match the cluster bond type special informational messages are shown in the wizard based on the existing...

Страница 130: ...ue to an OS version mismatch it can be upgraded to make it eligible Click the click here link in the Add to SnapScale column then login to the node and perform an OS update see OS Update on page 213 W...

Страница 131: ...ly used NOTE When more new nodes are being added to the cluster than there are unused IP addresses in the node address pool more IP addresses must be added to the pool You can also enter a starting ad...

Страница 132: ...al minutes IMPORTANT If the Storage network bond type on the new nodes needs to be changed to or from Switch Trunking or Link Aggregation 802 3ad to match the cluster bond type an additional step is s...

Страница 133: ...ide 5 Storage Options Example of network bond message Removing Nodes To remove a node from a SnapScale cluster go to Storage Nodes click the node name to view the Node Properties page and then click R...

Страница 134: ...and the node is not removed The node itself is no longer associated with the cluster and becomes an Uninitialized node that can be added to another cluster Node Identification The Node Identification...

Страница 135: ...m flashing NOTE The LEDs continue to flash for five minutes unless stopped To stop flashing LEDs for all units click the link next to the stop icon located below the Legend list Replacing Drives Shoul...

Страница 136: ...ive Note that drives with different rotational speeds cannot be combined in the same cluster In order to properly create peer sets with each member on different nodes if you have the Data Replication...

Страница 137: ...nk drive carriers from the slots that will be used for the new drives leaving the remaining blank carriers in place 2 Positioning a drive carrier in front of the appropriate bay For the X2 node slide...

Страница 138: ...orage Options On the Disks page any newly detected drives show a disk unused icon next to the drive It may take a minute or two before the drives appear as unused and the new disks detected banner is...

Страница 139: ...pScale first auto incorporates drives to fix any failed peer set and fulfill any reserved spare count The Web Management Interface then displays an alert banner about the new drives and the New Disks...

Страница 140: ...at all drives be incorporated at the same time Click Incorporate Disks to begin the process If enough new or spare drives exist on different nodes based on your Data Replication Count 2x or 3x new pee...

Страница 141: ...tors may choose to join the SnapScale cluster to a Windows Active Directory domain and CIFS SMB and AFP clients can then authenticate to the cluster using their domain credentials To accommodate NFS c...

Страница 142: ...e admin account is also admin guest The local user guest account requires no password admingrp The Admin group account includes the default admin user account Any local user accounts created with admi...

Страница 143: ...e When the cluster automatically generates UIDs or GIDs for imported Windows domain users or groups UIDs or GIDs that are already in use by LDAP NIS or local users are skipped When LDAP or NIS domain...

Страница 144: ...of Windows Active Directory on your cluster NOTE You cannot join an Active Directory domain if NTP is enabled If you see such a message click the NTP link to change your settings When the cluster join...

Страница 145: ...5 SnapScale RAINcloudOS 4 1 Administrator s Guide 6 Security Options Security Guide for Entire Volume Access This Share Level Access Security Guide wizard guides you through the four steps it takes to...

Страница 146: ...apScale RAINcloudOS 4 1 Administrator s Guide 6 Security Options Security Guide for Folder Access on Volume This Share Level Access Security Guide wizard guides you through the five steps it takes to...

Страница 147: ...oups for Windows SMB FTP and HTTP Administrators can also edit the NFS exports file to control how shares are exported to NFS client machines SnapScale supports file access in Windows and Unix network...

Страница 148: ...48 SnapScale RAINcloudOS 4 1 Administrator s Guide 6 Security Options Create Shares To create a new share at a minimum you need to specify the share name volume and folder path Click Create Share on t...

Страница 149: ...attributes and network access protocols 1 Accept the default share name or enter a new one To ensure compatibility with all protocols share names are limited to 27 alphanumeric characters including sp...

Страница 150: ...d the share has NFS enabled be sure to configure the NFS access settings afterward 7 To further configure the share click Advanced Share Properties and enter any of the following 8 Click Create Share...

Страница 151: ...urity Shares Share Properties displayed by clicking the share name in the table By clicking the Advanced Share Properties link additional options are displayed Use these options to hide the share from...

Страница 152: ...ty to clarify the purpose of the share Hide this share Select this option if you want the share to be hidden from network browsing using SMB HTTP HTTPS and FTP FTPS but not NFS protocols Protocols Sel...

Страница 153: ...curity Shares in the Access column click the link next to the share you want to configure The Share Access page is displayed You can set access levels for the share as well as grant or deny access to...

Страница 154: ...y are granted access to the share is full control You may restrict selected users and groups to read only access User based share access permissions are cumulative An SMB HTTP and FTP user s effective...

Страница 155: ...vel and file level permissions apply to a user action the more restrictive of the two applies Consider the following examples Example A More restrictive file level access is given precedence over more...

Страница 156: ...ox on the right Search for users and groups The default permission granted to users and groups when they are granted access to the share is Full Access You may restrict selected users and groups to Re...

Страница 157: ...box the name of the remote domain followed by a slash or backslash and the user name for which you are searching for example remote_domain user_name c Click Search to display any matches After you cli...

Страница 158: ...pen or Admin only access for the entire share click either Set Open Access or Set Admin Access 6 Click OK to save share permissions NFS Access for Shares NOTE Multiple shares pointing to the same targ...

Страница 159: ...be exported to NFS clients You can use the Add Host controls as described below to assist in making entries to the file or you can directly edit the text box After all entries are made click OK to re...

Страница 160: ...uash Forces users connected as root to interact as the nobody user UID 65534 This is the SnapScale default no_root_squash no_root_squash means that if root is logged in on your client machine it will...

Страница 161: ...sers The Local Users page provides all the options to manage local users Local users are users that are known only to the cluster being accessed Each SnapScale cluster comes with two predefined users...

Страница 162: ...that opens enter the requested information Option Description Name Use up to 31 alphanumeric characters and the underscore Full Name Use up to 49 alphanumeric characters includes spaces Input in this...

Страница 163: ...this synchronization process you should wait for the message to disappear before making further changes to your SnapScale cluster Disable User Login Check this box to disable the user login The user s...

Страница 164: ...Passwords are case sensitive To keep the existing password leave this field blank Password Verify Type the chosen password again for verification To keep the existing password leave this field blank...

Страница 165: ...1 On the Local Users page click Password Policy 2 On the Local Users Password Policy page check the Enable Password Policy box Disable User Login Check this box to disable the user login The user s i...

Страница 166: ...s box to enable the policy then enter the number of times a user can fail to login before the system locks the user out This applies to failed logins when connecting to any node in the cluster NOTE To...

Страница 167: ...3 To make a change To add the user to a group from the list on the right select a group name and click Add To remove the user from a group from the list on the left select the group name and click Rem...

Страница 168: ...ons 3 Click Delete User to delete the selected user Local Groups The Local Groups page Security Local Groups provides all the options to manage local groups Local groups are groups of local users that...

Страница 169: ...ess the Create Local Group page 2 Enter the following information 3 Click Create Group when finished 4 The Users for Local Group page is displayed allowing you to immediately add users to your new gro...

Страница 170: ...the Local Groups Properties page that opens you can change the GID For information on available UID ranges see User and Group ID Assignments on page 144 NOTE Changing a group s GID may alter filesyst...

Страница 171: ...al Groups Users to make changes to the membership of a local group Add or Remove Group Users 1 On the Local Groups page select a group name and click Users 2 To make a change To add the user to a grou...

Страница 172: ...udOS 4 1 Administrator s Guide 6 Security Options Delete Group On the Local Groups page use the following process to remove a group Delete a Group 1 On the Local Groups page select the group to be del...

Страница 173: ...clients and whether the personality of files and folders can be changed by changing permissions NOTE Folders created in a volume default to the security model of that volume The folder s security mod...

Страница 174: ...e are files and directories under the volume you are prompted whether you want to recursively apply the change This resets permissions on all files and directories to make them accessible by all users...

Страница 175: ...move Mappings removes one or more mappings while Remove All Mappings removes all mappings that had been previously established Options to simplify the discovery of a desired user or group to manage th...

Страница 176: ...er or group from the results list and click Add Mapping 3 At the Add Mapping page to find the user group you want to map to select the Windows domain user or group list the scope of the search enter a...

Страница 177: ...down list through which to search then enter in the Find box the name of the remote domain followed by a slash or backslash and the user name for which you are searching for example remote_domain user...

Страница 178: ...r mappings click OK to activate them 8 At the confirmation page click Save Changes 9 At the filesystem update option page choose either Update Filesystem or Do Not Update Filesystem IMPORTANT Updating...

Страница 179: ...g the Search drop down list select the local LDAP or NIS user or group list to be searched b Select Find and enter the search string or select Find All Enter the exact name or a string with a wild car...

Страница 180: ...use either Find All or a Find search string using the first few letters of the user group name On the rare occasion you need to search for a Windows domain that s not listed remote domain select a Wi...

Страница 181: ...by any of the Windows users and groups you have just updated will remain unchanged and cannot be updated at a later time See Filesystem Updates on page 213 for more details Auto Mapping Auto mapping...

Страница 182: ...n your system If you elect not to do this operation any files and folders owned by or having permissions by any of the Windows users and groups you have just updated will remain unchanged and cannot b...

Страница 183: ...the confirmation page verify the users groups listed and click Remove Mappings The selected mappings are removed and the default page is displayed with the users groups that were unmapped in purple w...

Страница 184: ...option allows you to remove all ID mappings on the cluster If there are no mappings the button is grayed out 1 At the default ID Mapping page click Remove All Mappings If needed check View only unsave...

Страница 185: ...by or having permissions by any of the Windows users and groups you have just updated will remain unchanged and cannot be updated at a later time See Filesystem Updates on page 213 for more details R...

Страница 186: ...ge Inc 186 SnapScale RAINcloudOS 4 1 Administrator s Guide 6 Security Options 2 Click Remove Missing Mappings to clear the missing mappings from the system A confirmation is shown on the ID Mapping ma...

Страница 187: ...r Do Not Update Filesystem options If you choose Update Filesystem UID and GID ownership on files and SIDs in ACLs are updated to reflect the ID mapping operation IMPORTANT Updating may take some time...

Страница 188: ...ries are accessed by users either via a user specific share or via a common share pointing to the home directory root Home directories are supported for SMB NFS HTTP HTTPS and FTP FTPS They are access...

Страница 189: ...directory is empty the local user s files are copied to the domain user s home directory the first time the local user connects after the users are mapped If both the local and domain user home direct...

Страница 190: ...erland Storage Inc 190 SnapScale RAINcloudOS 4 1 Administrator s Guide 6 Security Options NOTE Do not put Home Directories on a volume that might be deleted If you delete the volume you will also dele...

Страница 191: ...apter 7 System Monitoring This chapter addresses the options for monitoring the SnapScale cluster Topics in System Monitoring System Status Activity Submenus Active Users Open Files Network Monitor Ev...

Страница 192: ...ame Name of the node The default node name is Nodennnnnnn where nnnnnnn is your node number for example Node1123578 Node Model Node model name number OS Version The version of RAINcloudOS currently lo...

Страница 193: ...other pages Active Users Open Files Network Monitor CPU The type of central processing unit CPU If more than one CPU exists each is listed separately Client Network Provides details on the client sid...

Страница 194: ...e on this page includes user names of all active users their workstation names authorization the number of open files they have on the node the protocol and when they logged on Columns can be sorted i...

Страница 195: ...loudOS 4 1 Administrator s Guide 7 System Monitoring Open Files Use this option to view read only details on the open files on a specific node Use the drop down list on the upper right to choose a dif...

Страница 196: ...on both the Client and Storage networks Monitoring is enabled by default Go to Monitor Activity Network Monitor and click Disable Network Monitoring to turn it off NOTE When using Internet Explorer d...

Страница 197: ...ery 15 seconds NOTE You can manually refresh the data by using the Refresh button above the graphs the Refresh button at the bottom of the page or the Refresh icon at the right corner of the tab bar I...

Страница 198: ...When green all nodes are selected Node selection is not available when Combined Usage is enabled To display the Select Nodes icon turn Combined Usage off Total Throughput This icon controls whether t...

Страница 199: ...and not updated You can scale the magnification of the graph by either clicking and dragging horizontally withing the graph area or using the handles at the sides of the Zoom Bar To pan and view any...

Страница 200: ...loudOS 4 1 Administrator s Guide 7 System Monitoring Download Usage Records To download the record displayed as a CSV file click Download A dialog box asks you to determine the location of the downloa...

Страница 201: ...or E Yellow Warning W no color Informational or Unclassified I E W I Option Description View Log Select to view either the SnapScale cluster wide or node specific logs The SnapScale option shows gener...

Страница 202: ...h this node it should have been taken over by a different node No services are running on this node Banned This node failed too many recovery attempts and has been banned from participating in the clu...

Страница 203: ...o your SnapScale via the Web Management Interface the settings are applied to the Management node first to determine success or failure of the configuration then the settings are applied to the other...

Страница 204: ...and date time the setting was applied If an operation is still in progress on a node the Status will be set to Pending with a yellow background If an operation failed on a node the Status will have a...

Страница 205: ...e page to return to the Monitor page The following table describes the fields Field Description Device Model The manufacturer s model for the device Device Type Type of tape device either Sequential A...

Страница 206: ...on the Web Management Interface displays options used to maintain this SnapScale cluster There is also a Tools submenu of special related options Topics in Maintenance Shutdown and Restart Data Import...

Страница 207: ...e Shutdown Restart in the Web Management Interface The Power button on the front of the node can be used to power on or power off in an emergency a node To turn the node on press the Power button on t...

Страница 208: ...loudOS 4 1 Administrator s Guide 8 Maintenance Data Import Use the Data Import page Maintenance Data Import to import migrate data from another SnapScale cluster SnapServer or other computer that supp...

Страница 209: ...ications of the last import job The following import options can be specified Copy or move data Include subfolders Overwrite existing files Preserve the original permissions settings NOTE If you elect...

Страница 210: ...Password Windows user name and password to log in to the source server over SMB For the NFS network protocol enter the User Name node local user name or NIS user representing the UID used to perform...

Страница 211: ...s option overwrites those files folders during import default is checked Preserve File Folder Permissions Selecting this option retains the source permissions when the files folders are imported to th...

Страница 212: ...ed domains Certain built in Windows users and groups Importing from a Unix Security Model to a Unix Personality directory If you are importing from a Unix server to a Unix personality directory Unix p...

Страница 213: ...interrupt the update process You may severely damage the cluster if you interrupt a software update operation before it is complete Update the RAINcloudOS NOTE Snap EDR cannot be installed on a SnapSc...

Страница 214: ...es are updated simultaneously The SnapScale will be offline restarted and unavailable during the entire update process Online or Rolling Update This is a slower option as each node is updated in seque...

Страница 215: ...ems and data loss consider the following caveats If upload fails on one or more nodes the upgrade will abort with an error and list the nodes that had problems In such a case an Offline Update is requ...

Страница 216: ...features are blocked during an Online Rolling Update Delete SnapScale Add Nodes Remove Node Data Balancer Spare Distributor Update Notification Check for Updates Certain SnapScale Properties Changing...

Страница 217: ...ster Reason Solution Peer sets are degraded or rebuilding Address degraded issue and allow peer sets to rebuild before updating OS versions are not consistent across all SnapScale nodes Update the RAI...

Страница 218: ...the menu bar on all Web Management Interface pages NOTE You can choose to hide the banner by clicking either the Remind me later or Hide this message link on the banner For Remind me later the Web Man...

Страница 219: ...ance 2 Check the Enable Automatic Update Notification box 3 If your environment requires using a proxy server for external web based communication a Check the Use a proxy server for HTTP communication...

Страница 220: ...information Click this link to view a detailed status of the last update applied to the cluster Support The Support page provides an easy way to contact Overland Technical Support and transmit system...

Страница 221: ...ble with your contact information entered Registering Your Cluster The very first time you start your cluster a Registration Reminder page appears Registering your cluster activates your warranty and...

Страница 222: ...If you skipped the registration during setup to register the cluster now click Registration on the Maintenance Support page To Register Your Cluster NOTE To use this feature access to the Internet is...

Страница 223: ...r settings make sure that you save the CSV file to your local computer 4 Email the downloaded CSV file to warranty overlandstorage com Use the subject line SnapScale Registration Request for the email...

Страница 224: ...5 002 2008 14 Overland Storage Inc 224 SnapScale RAINcloudOS 4 1 Administrator s Guide 8 Maintenance Maintenance Tools The Tools option provides a submenu of general purpose maintenance options and fe...

Страница 225: ...le and then click OK Option Description Enable Email Notification To enable email notification check the Enable Email Notification box SMTP Server Enter a valid SMTP server IP address or host name SMT...

Страница 226: ...can be entered Send Email Notification Check the boxes next to the events you wish to be notified about Node shutdown restart The node shuts down or reboots due to an automatic or manual process Node...

Страница 227: ...e to identify external hosts in the hosts file for the SnapScale cluster This page allows you to supply a hostname to IP address mapping that persists across system reboots Click Add Host File Entry c...

Страница 228: ...ed nodes Shut down all nodes After deleting the SnapScale cluster the nodes shut down The next time the nodes are powered on they automatically perform a fresh install and then reboot as Uninitialized...

Страница 229: ...RAINcloudOS 4 1 Administrator s Guide 8 Maintenance 3 At the confirmation page enter your Admin password and click Delete SnapScale again to start the process During the cluster deletion an informatio...

Страница 230: ...gmt Interface Settings these options are also directly navigable from the various menus in the Web Management Interface Also the Home Snap Finder SnapExtensions Site Map and Help options are accessibl...

Страница 231: ...Once logged in using the Administration link you can switch between the Home page and the Administration page using the Home page icon on the button bar Home Page The Web Management Interface Home pa...

Страница 232: ...file folder on the share Clicking this icon displays a popup box with security information about the file folder This page also provides three key administrative function links Change Password Takes...

Страница 233: ...he cluster has not completed the Initial Setup Wizard if this is the case you will not be able to access the Administration page of the Web Management Interface either Web Root is enabled via Network...

Страница 234: ...istrator s Guide 9 Misc Options The Auto refresh icon is displayed on the right corner just above the Cluster Status Box Click the icon or Refresh below the Cluster Status Box to manually refresh the...

Страница 235: ...ension Mousing over this icon shows all active extensions and provides a direct access link to them BitTorrent Sync CAUTION BitTorrent Sync bypasses share and file security Be sure to only share data...

Страница 236: ...36 SnapScale RAINcloudOS 4 1 Administrator s Guide 9 Misc Options 2 At the configuration page check Enable and click OK 3 At the following page accept the BitTorrent Privacy Policy and Terms by clicki...

Страница 237: ...e use the Configure BitTorrent Sync link to configure it for your use NOTE Once enabled you can return at any later time to configure or reconfigure BitTorrent Sync by clicking BitTorrent Sync on the...

Страница 238: ...ble Once re enabled BitTorrent Sync must be completely reconfigured again There are BitTorrent Sync mobile apps that make synced documents available on iOS Android Windows Phone 8 and Kindle Fire syst...

Страница 239: ...ter is always Online IP Address The IP address of the SnapServer Uninitialized node or the Management IP address of the SnapScale cluster OS Version The OS version currently installed on the SnapServe...

Страница 240: ...bnet Complete the following fields and then click OK to return to the Snap Finder page Option Description Display warning if any of a server s Ethernet ports have no link Check to display a warning ic...

Страница 241: ...passwords regularly This is done using the Change Password page Changing Your Password 1 On the Home page click the Change Password link 2 At the Change Password page enter your User Name and Current...

Страница 242: ...blue background This can be changed to a solid blue background on the Web Management Interface Settings page by clicking the Site Map icon to access Management Interface Settings Check the first box...

Страница 243: ...10400455 002 2008 14 Overland Storage Inc 243 SnapScale RAINcloudOS 4 1 Administrator s Guide 9 Misc Options...

Страница 244: ...a node can be performed using supported backup agents and media libraries installed on a node Snap Enterprise Data Replicator Snap EDR provides server to server synchronization by moving copying or re...

Страница 245: ...talled it is automatically installed on that node Configuring Snap EDR To configure the cluster as a Snap EDR Management Console or an Agent 1 Click the SnapExtensions icon located in the upper right...

Страница 246: ...on Notes do not support the backup of Windows ACLs If Windows ACL backup is critical Overland Storage strongly recommends you create a disaster recovery image before you perform a backup A SnapScale c...

Страница 247: ...del Management Special Share Options File and Share Access File level Security Security Model Rules Files and directories created inside security models acquire the security personality and permission...

Страница 248: ...files and directories cannot be changed on a Unix security model All files and directories always have the Unix personality Security Model Management Changes to a security model can optionally be pro...

Страница 249: ...ls Share Level Permissions Share level permissions on GuardianOS are applied cumulatively For example if the user jdoe has Read Only share access and belongs to the group sales which has Read Write sh...

Страница 250: ...a file can retrieve it on demand without administrator intervention Snapshot shares are created during the course of creating a share or thereafter by navigating to the Snapshots page and clicking the...

Страница 251: ...t and inheritance models not including the behavior of some built in Windows users and groups Unix Traditional Unix permissions rwx for owner group owner and other By default volumes are created with...

Страница 252: ...ingrp The ACL is inherited per the inheritance ACEs on the parent directory s ACL The owner of a file or directory always implicitly has the ability to change permissions regardless of the permissions...

Страница 253: ...me Support LED Indicators LED indicators provide information on the status of basic connectivity disk drives fan modules and power supply modules SnapScale X2 Node LEDs The SnapScale X2 has one networ...

Страница 254: ...h disk carrier Node Status LED This is the round LED located just below the Power button on the right flange Drive Activity Drive Status Ethernet Power Reset Status Button Device State LED State No Di...

Страница 255: ...m is Drive Status The Control Panel on the left flange has a series of LEDs as shown here Device State LED State Powered OFF Off Link Up SnapScale Powered ON Solid green Link Down Off Device State LED...

Страница 256: ...ge Control Panel Icon Name Description Power Button This is the main power button Turning off system power with this button removes the main power but keeps standby power supplied to the system The po...

Страница 257: ...umber of reasons To resolve this issue use one of the following methods Verify that you have the correct IP address of the cluster and try to connect again Verify that the LED for the primary Ethernet...

Страница 258: ...troller This means that either your Domain Controller is down or the SnapScale is unable to reach it Because it cannot communicate with the Domain Controller it is not able to authenticate the user Ch...

Страница 259: ...in as root You Are Unable to See Your Domain Users When Trying to Set Up Windows Security Permissions on File Folders The SnapScale has joined the Active Directory domain properly but you cannot see t...

Страница 260: ...rt representative may ask you to fill out and submit this page If a case is already in progress you will need to enter the case number provided by the technical support representative NOTE Phone Home...

Страница 261: ...generate and tech support may direct a user to use this for a particular case The additional options include FTP Server Name of the server to upload to FTP Path FTP server path used to upload to FTP...

Страница 262: ...age Inc 262 SnapScale RAINcloudOS 4 1 Administrator s Guide C Troubleshooting Upload information about specific nodes Select one or more nodes to upload logs from them Use the Select All and Select No...

Страница 263: ...c Host Control Protocol DHCP clients 80 TCP UDP Web Management Interface http HyperText Transfer Protocol HTTP for World Wide Web WWW services 81 TCP Web Management Interface HTTP Hypertext Transport...

Страница 264: ...2599 UDP Snap Finder SnapServer Manager Sysbroker Multicast Discovery 3052 TCP SnapScale UPS Port for monitoring UPS status 3205 TCP Network iSNS iSNS iSNS port 3260 TCP Storage iSCSI iSCSI iSCSI por...

Страница 265: ...torage Inc 265 SnapScale RAINcloudOS 4 1 Administrator s Guide D RAINcloudOS Ports 1024 65535 TCP UDP Network NFS Network FTP NFS FTP Passive Dynamically allocated in runtime for user connections Port...

Страница 266: ...ters COMMANDS ARGUMENTS and OPTIONS To generate commands in SnapCLI use the following syntax COMMAND ARGUMENT OPTIONS where COMMAND is the name of one of the SnapCLI commands ARGUMENT is an action ava...

Страница 267: ...access the cluster and to disable non secure HTTP access SnapCLI Procedures Use these procedures to access and exit SnapCLI Logging into SnapCLI 1 Make sure your client has an SSH v2 client applicati...

Страница 268: ...the date set command domain get Get the domains and their properties known to the SnapScale cluster domain list List the domains known to the SnapScale cluster email get Get email notification setting...

Страница 269: ...remove all Remove all ID mappings idmap update files Update filesystem for ID mapping changes idmap update status View status of ID mapping update filesystem operation idmap user get Get ID mapping f...

Страница 270: ...e quota limit usage for a specific user reboot Reboot the SnapScale cluster securitymodel get Get the security model on a SnapScale Volume securitymodel set Set the security model on a SnapScale Volum...

Страница 271: ...swrapper and all third party logs syslog edr Create a tar file of Snap EDR logs syslog s2s Create a tar file of S2Sv2 logs syslog syswrapper Create a tar file of syswrapper only tcpip create bond Crea...

Страница 272: ...the name of the script 5 To run the script type the path again and press Enter shares sharename scriptname Sample Script Following is an example script that can be used to create and remove users gro...

Страница 273: ...usage mkuser user_name password mkuser Create a User if the user does not exist then create it if CLI user get user name 1 dev null 2 1 then echo Creating user 1 CLI user create user name 1 password 2...

Страница 274: ...get user name 1 dev null 2 1 then if CLI group get group name 2 dev null 2 1 then echo Adding user 1 to group 2 CLI group member add user name 1 group name 2 dev null 2 1 if ne 0 then echo Adding user...

Страница 275: ...1 failed return 1 fi else echo Group 1P does not exist fi return 0 usage rmshare share_name rmshare Delete the Share if the share exists delete it if CLI share get share name 1 dev null 2 1 then echo...

Страница 276: ...uence of steps designed to solve a problem or execute a process ATA Short for Advanced Technology Attachment A standard interface for connecting storage devices to a PC Authentication The validation o...

Страница 277: ...1985 Cat 6 Cable Short for Category 6 it is network cabling that consists of four twisted pairs of copper wire terminated by 8P8C modular connectors made to higher standards that help reduce noise cau...

Страница 278: ...on the network To gain access to these network resources the user logs into the domain Domain Name The ASCII name that identifies the domain for a group of computers within a network Ethernet The most...

Страница 279: ...ovides a way to exchange files between computers on the Internet Full duplex A type of transmission that allows communicating systems to both transmit and receive data simultaneously Gateway The hardw...

Страница 280: ...us or network An initiator issues the commands a target receives them An initiator normally runs on a host computer It may be either a software driver or a hardware plug in card often called a Host Bu...

Страница 281: ...nd the origin of group policies are applied to the domain LAN Short for Local Area Network A network connecting computers in a relatively small area such as a building LCD Short for Liquid Crystal Dis...

Страница 282: ...largest size packet or frame specified in octets eight bit bytes that can be sent in a packet or frame based network NIC Short for Network Interface Card A board that provides network communication c...

Страница 283: ...A router is a device that enables connectivity between Ethernet network segments SAN Short for Storage Area Network Data storage connected to a network that provides network clients access to data us...

Страница 284: ...no passwords cross the network in clear text SSL Short for Secure Sockets Layer A protocol for managing the security of a message sent on the Internet It is a type of technology that provides data en...

Страница 285: ...e senses a loss of power from the primary source URL Short for Uniform Resource Locator A Web address USB Port USB is short for Universal Serial Bus A USB port is a hardware interface for low speed pe...

Страница 286: ...Share Properties 149 151 Advanced Support Properties 261 ALB 56 alert definitions 4 alert messages 40 Application Notes 246 Authentication default settings 142 HTTPS HTTP 78 Kerberos 63 LDAP domain 71...

Страница 287: ...igabit Ethernet Event Log page 201 expansion kits 127 exports file NFS 147 F failed drive 136 Failover failover 16 file folder security information 232 files setting permissions for 251 FTP connecting...

Страница 288: ...rk Monitor page 196 network monitoring download usage records 200 graphing options 199 viewing usage 197 new drives detected 139 NFS access 67 exports file 147 read only share access 68 share level pe...

Страница 289: ...links 42 SMB 61 SMB backup 246 SMB2 65 67 SMTP methods supported 225 Snap EDR 238 244 Snap Finder 238 SnapCLI 266 running scripts 272 syntax 266 SnapExtensions BitTorrent 235 main page 235 mouseover i...

Страница 290: ...address 60 246 V VDS based iSCSI disks 118 version of OS 3 volumes capacity reached alert 226 default page 96 expanding capacity of 99 Volume Properties 99 VSS based iSCSI disks 118 W warranty activat...

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