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Dell EMC ME4 Series Deployment Manual Download Page 5

Dealing with hardware faults........................................................................................................................................73

A Cabling for replication................................................................................................................ 76

Connecting two storage systems to replicate volumes................................................................................................. 76
Host ports and replication.................................................................................................................................................. 76
Example cabling for replication...........................................................................................................................................77

Single-controller module configuration for replication.............................................................................................. 77
Dual-controller module configuration for replication................................................................................................. 77

Isolating replication faults................................................................................................................................................... 80

Diagnostic steps for replication setup......................................................................................................................... 81

B SFP+ transceiver for FC/iSCSI ports........................................................................................... 83

C System Information Worksheet...................................................................................................85

D Setting network port IP addresses using the CLI port and serial cable............................................ 88

Mini-USB Device Connection............................................................................................................................................ 90

Microsoft Windows drivers........................................................................................................................................... 91
Linux drivers.................................................................................................................................................................... 91

Contents

5

Summary of Contents for ME4 Series

Page 1: ...Dell EMC PowerVault ME4 Series Storage System Deployment Guide ...

Page 2: ...age to hardware or loss of data and tells you how to avoid the problem WARNING A WARNING indicates a potential for property damage personal injury or death 2018 2019 Dell Inc or its subsidiaries All rights reserved Dell EMC and other trademarks are trademarks of Dell Inc or its subsidiaries Other trademarks may be trademarks of their respective owners 2019 09 Rev A04 ...

Page 3: ...the enclosures in the rack 15 Rackmount rail kit 15 Install the 2U enclosure 15 Install the 2U enclosure front bezel 16 Install the 5U84 enclosure 16 Connect optional expansion enclosures 17 Cable requirements for expansion enclosures 18 3 Connect to the management network 21 4 Cable host servers to the storage system 22 Cabling considerations 22 Connecting the enclosure to hosts 22 CNC technology...

Page 4: ...Fibre Channel host server configuration for Linux 46 iSCSI host server configuration for Linux 48 SAS host server configuration for Linux 51 VMware ESXi hosts 52 Fibre Channel host server configuration for VMware ESXi 52 iSCSI host server configuration for VMware ESXi 54 SAS host server configuration for VMware ESXi 56 Enable Multipathing on iSCSI volumes 58 Citrix XenServer hosts 58 8 Troubleshoo...

Page 5: ...dule configuration for replication 77 Dual controller module configuration for replication 77 Isolating replication faults 80 Diagnostic steps for replication setup 81 B SFP transceiver for FC iSCSI ports 83 C System Information Worksheet 85 D Setting network port IP addresses using the CLI port and serial cable 88 Mini USB Device Connection 90 Microsoft Windows drivers 91 Linux drivers 91 Content...

Page 6: ... 1 Unpacking the 2U12 and 2U24 enclosures 1 Storage system enclosure 2 Rackmount left rail 2U 3 Rackmount right rail 2U 4 Documentation 5 Enclosure front panel bezel option 6 Rack mount ears 2U enclosures are shipped with the controller modules or input output modules IOMs installed Blank drive carrier modules must be installed in the unused drive slots For enclosures configured with CNC controlle...

Page 7: ...ure out of the box by using proper lifting techniques Place the enclosure in an electrostatically protected area Safety guidelines Always follow these safety guidelines to avoid injury and damage to ME4 Series components If you use this equipment in a manner that is not specified by Dell EMC the protection that is provided by the equipment could be impaired For your safety and precaution observe t...

Page 8: ...ling modules CAUTION 5U84 enclosures only To prevent a rack from tipping over drawer interlocks stop users from opening both drawers simultaneously Do not attempt to force open a drawer when the other drawer in the enclosure is already open In a rack containing more than one 5U84 enclosure do not open more than one drawer per rack at a time Observe the hot surface label that is affixed to the draw...

Page 9: ...e design of the electrical distribution system must take into consideration the total grounding leakage current from all the PSUs PCMs in all the enclosures The rack requires labeling with High Leakage Current Grounding connection essential before connecting supply Installation checklist This section shows how to plan for and successfully install your enclosure system into an industry standard 19 ...

Page 10: ...U84 enclosures Two IOMs must be installed in 2U12 2U24 and 5U84 enclosures Preparing for installation NOTE Enclosure configurations 2U enclosures are delivered with CRUs and all drive carrier modules installed 5U84 enclosures are delivered with CRUs installed however DDICs must be installed during system setup 5U84 enclosures require 200 240VAC for operation See the Environmental requirements topi...

Page 11: ... in front of the rack for installing the rails Disk drive module The ME4 Series Storage System supports different disk drive modules for use in 2U and 5U84 enclosures The disk drive modules that are used in 2U enclosures are referred to as drive carrier modules The disk drive modules that are used in 5U84 enclosures are referred to as Disk Drive in Carrier DDIC modules Drive carrier module in 2U c...

Page 12: ...er Drive status indicators Green and amber LEDs on the front of each drive carrier module indicate disk drive status Blank drive carrier modules Blank drive carrier modules also known as drive blanks are provided in 3 5 2U12 and 2 5 2U24 form factors They must be installed in empty disk slots to create a balanced air flow 12 Before you begin ...

Page 13: ...ctional arrow The slide latch enables you to install and secure the DDIC into the disk slot within the drawer The slide latch also enables you to disengage the DDIC from its slot and remove it from the drawer The DDIC has a single Drive Fault LED which illuminates amber when the disk drive has a fault The following figure shows a DDIC with a 3 5 disk drive Figure 7 3 5 disk drive in a DDIC The fol...

Page 14: ...awer After that install slots 14 27 and so on The number of populated rows must not differ by more than one row between the top and bottom drawers Hard disk drives HDD and solid state drives SDD can be mixed in the same drawer HDDs installed in the same row should have the same rotational speed DDICs holding 3 5 disks can be intermixed with DDICs holding 2 5 disks in the enclosure However each row...

Page 15: ...kit from the accessories box and examine for damage 2 Use the following procedure to attach the rail kit brackets to the rack post a Set each location pin at the rear of the rail into a rear rack post hole b Use the supplied washers and screws to attach the bracket to the rear rack post Leave the screws loose c Extend the rail to fit between the front and rear rack posts d Attach the bracket to th...

Page 16: ...er of the storage system Figure 11 Attach the bezel to the front of the 2U enclosure 2 Insert the left end of the bezel into the securing slot until the release latch snaps into place 3 Secure the bezel with the keylock as shown in the detail view in Figure 11 Attach the bezel to the front of the 2U enclosure NOTE To remove the bezel from the 2U enclosure front panel reverse the order of the previ...

Page 17: ...o the edge of the rack post 6 Slide the enclosure until fully seated on its rails 7 Fasten the front of the enclosure using the enclosure fastening screws x4 as shown in Figure 12 Secure brackets to the rail left hand rail shown for 5U84 enclosure 8 Fix the rear of the enclosure to the sliding bracket with the rear enclosure fastening screws CAUTION Once the enclosure is installed in the rack disp...

Page 18: ...pansion enclosures you may need to purchase additional cables depending upon the number of enclosures and cabling method used You may need to order additional or longer cables when reverse cabling a fault tolerant configuration Per common convention in cabling diagrams the controller enclosure is shown atop the stack of connected expansion enclosures In reality you can invert the order of the stac...

Page 19: ... enclosure with 5U84 expansion enclosures four enclosures including the controller enclosure Figure 14 Cabling connections between a 5U controller enclosure and 5U expansion enclosures 1 Controller module A 0A 2 Controller module B 0B 3 IOM 1A 4 IOM 1B 5 IOM 2A 6 IOM 2B 7 IOM 3A 8 IOM 3B Figure 15 Cabling connections between a 2U controller enclosure and 5U84 expansion enclosures shows the maximum...

Page 20: ...nclosures 1 Controller module A 0A 2 Controller module B 0B 3 IOM 1A 4 IOM 1B 5 IOM 2A 6 IOM 2B 7 IOM 3A 8 IOM 3B Label the back end cables Make sure to label the back end SAS cables that connect the controller enclosure and the expansion enclosures 20 Mount the enclosures in the rack ...

Page 21: ...ement ports to the same physical switches Dell EMC recommends using separate VLANs Figure 16 Connect a 2U controller enclosure to the management network 1 Controller module in slot A 2 Controller module in slot B 3 Switch 4 SAN Figure 17 Connect a 5U controller enclosure to the management network 1 Controller module in slot A 2 Controller module in slot B 3 Switch 4 SAN NOTE See also the topic abo...

Page 22: ...tion ULP which enables a host to access mapped volumes through any controller host port ULP can show all LUNs through all host ports on both controllers and the interconnect information is managed by the controller firmware ULP appears to the host as an active active storage system allowing the host to select any available path to access the LUN regardless of disk group ownership CNC technology Th...

Page 23: ...strator s Guide You can also use CLI commands to perform these actions Use the set host parameters CLI command to set FC port options Use the show ports CLI command to view information about host ports iSCSI protocol ME4 Series controller enclosures support controller modules with CNC host interface ports CNC ports can be configured to support iSCSI protocol in either four or two CNC ports The CNC...

Page 24: ...see the topic about configuring CHAP in the Dell EMC PowerVault ME4 Series Storage System Administrator s Guide SAS protocol ME4 Series SAS models use 12 Gb s host interface protocol and qualified cable options for host connection 12Gb HD mini SAS host ports ME4 Series 12 Gb SAS controller enclosures support two controller modules The 12 Gb s SAS controller module provides four SFF 8644 HD mini SA...

Page 25: ...orting 10 GbE iSCSI host interface ports to a server HBA or switch using the controller CNC ports select a qualified 10 GbE SFP transceiver For information about configuring iSCSI initiators HBAs see the iSCSI topics under Attach host servers Use the cabling diagrams to connect the host servers to the switches Install and connect each Ethernet NIC to a switch that is connected to the host ports on...

Page 26: ...gle controller module the controller module must be installed in the upper slot A controller module blank must be installed in the lower slot This configuration is required to enable sufficient air flow through the enclosure during operation Dual controller module configurations A dual controller module configuration improves application availability If a controller module failure occurs the affec...

Page 27: ... 2 3 Controller module in slot A 4 Controller module in slot B Figure 23 Connecting hosts ME4 Series 5U direct attach two servers one HBA per server dual path 1 Server 1 2 Server 2 3 Controller module in slot A 4 Controller module in slot B Figure 24 Connecting hosts ME4 Series 2U direct attach four servers one HBA per server dual path 1 Server 1 2 Server 2 3 Server 3 4 Server 4 5 Controller modul...

Page 28: ...particular environment Using switches increases the number of servers that can be connected to the storage system NOTE About switch attached configurations See the recommended switch attached examples for host connection in the Setting Up Your Dell EMC PowerVault ME4 Series Storage System document that is provided with your controller enclosure See Figure 18 Two subnet switch example IPv4 for an e...

Page 29: ... Server 1 2 Server 2 3 Switch A 4 Switch B 5 Controller module A 6 Controller module B Label the front end cables Make sure to label the front end cables to identify the controller module and host interface port to which each cable connects Cable host servers to the storage system 29 ...

Page 30: ...the following figures Figure 28 Typical AC power cable connection from PDU to PCM 2U 1 Controller enclosure with redundant PCMs 2 Redundant PCM to PDU AC UPS shown connection Figure 29 Typical AC power cable connection from PDU to PSU 5U 1 Controller enclosure with redundant PSUs 2 Redundant PSU to PDU AC UPS shown connection NOTE The power cables must be connected to at least two separate and ind...

Page 31: ...to power up the enclosures and associated data host in the following order Drive enclosures first Ensures that the disks in the drive enclosure have enough time to completely spin up before being scanned by the controller modules within the controller enclosure The LEDs blink while the enclosures power up After the LEDs stop blinking if the LEDs on the front and back of the enclosure are not amber...

Page 32: ...r account Verify that cookies are allowed for the IP address of each controller network port For Internet Explorer set the local intranet security option on the browser to medium or medium low For Internet Explorer add each network IP address for each controller as a trusted site For HTTPS ensure that Internet Explorer is set to use TLS 1 2 Access the ME Storage Manager Do not turn on more than on...

Page 33: ...nly one controller its health shows as degraded If you are operating the system with a single controller acknowledge this message in the panel If you installed two controllers click System Information to diagnose the problem If the system health is degraded you can still to configure and provision the system However if the health of the system is bad you cannot configure and provision the system u...

Page 34: ...9 254 x x addresses including gateway 169 254 0 1 are on a private subnet that is reserved for unconfigured systems and the addresses are not routable This prevents the DHCP server from reassigning the addresses and possibly causing a conflict where two controllers have the same IP address As soon as possible change these IP values to proper values for your network For IPv6 when Manual mode is ena...

Page 35: ...nd close the panel click Apply and Close A confirmation panel is displayed 7 Click Yes to save your changes Otherwise click No 8 Sign out to use the new IP addresses to access the MESM Notifications tab Setting system notification settings Dell EMC recommends enabling at least one notification service to monitor the system Send email notifications Perform the following steps to enable email notifi...

Page 36: ...m the following steps to configure FC ports 1 Perform one of the following to access the options in the Ports tab In the Home topic select Action System Settings then click Ports In the System topic select Action System Settings then click Ports In the Welcome panel select System Settings and then click the Ports tab 2 From the Host Post Mode list select FC 3 From the Port Settings tab set the por...

Page 37: ... 32 bit addresses IPv6 uses 128 bit addresses Enable iSNS Enables or disables registration with a specified Internet Storage Name Service server which provides name to IP address mapping iSNS Address Specifies the IP address of an iSNS server Alternate iSNS Address Specifies the IP address of an alternate iSNS server which can be on a different subnet CAUTION Changing IP settings can cause data ho...

Page 38: ...nables or disables registration with a specified Internet Storage Name Service server which provides name to IP address mapping iSNS Address Specifies the IP address of an iSNS server Alternate iSNS Address Specifies the IP address of an alternate iSNS server which can be on a different subnet CAUTION Changing IP settings can cause data hosts to lose access to the storage system 6 Perform one of t...

Page 39: ...f the total size and number of disks to be provisioned including the configuration of spares and unused disks If the system is unable to determine a valid storage configuration the wizard lists the reasons why and provides directions on how to achieve a proper configuration If the system is unhealthy an error is displayed along with a description of how to fix it Follow the recommendations in the ...

Page 40: ...use multipath I O MPIO Attach host servers NOTE About these ME4 Series storage system setup tasks Refer to the Dell EMC Storage Support Matrix for a list of supported HBAs or iSCSI network adapters Configure only one host at a time For more information see the topics about initiators hosts and host groups and attaching hosts and volumes in the Dell EMC PowerVault ME4 Series Storage System Administ...

Page 41: ...the Host Name field 5 Using the information documented in step 4 of Attach FC hosts to the storage system select the FC initiators for the host you are configuring then click Next 6 Group hosts together with other hosts in a cluster a For cluster configurations group hosts together so that all hosts within the group share the same storage If this host is the first host in the cluster select Create...

Page 42: ... storage system careful planning ensures a successful deployment Complete a planning worksheet with the iSCSI network IP addresses to be used per the example in the following table Table 6 Example worksheet for host server with dual port iSCSI NICs Management IP Server Management 10 10 96 46 ME4024Controller A Management 10 10 96 128 ME4024 Controller B Management 10 10 96 129 Subnet 1 Server iSCS...

Page 43: ... iSCSI NICs 9 From the command prompt ping each of the controller IP addresses to verify host connectivity before proceeding If ping is not successful verify connections and the appropriate IP subnet agreement between interfaces Configure the iSCSI Initiator Perform the following steps to configure the iSCSI Initiator on the host 1 Open the Server Manager 2 Select Tools iSCSI Initiator The iSCSI I...

Page 44: ...date the volume name with the hostname to better identify the volumes 8 On the Summary page review the host configuration settings and click Configure Host Enable MPIO for the volumes on the Windows server Perform the following steps to enable MPIO for the volumes on the Windows server 1 Open Server Manager 2 Select Tools MPIO 3 Click the Discover Multi Paths tab 4 Select DellEMC ME4 in the Device...

Page 45: ...he following steps to register hosts and create volumes using the ME Storage Manager 1 Log in to the ME Storage Manager 2 Access the Host Setup wizard From the Welcome screen click Host Setup From the Home topic click Action Host Setup 3 Confirm that you have met the listed prerequisites then click Next 4 Type a host name in the Host Name field 5 Using the information documented in step 4 of Attac...

Page 46: ...ching a host to the storage system careful planning ensures a successful deployment Administrative or privileged user permissions are required to make system level changes These steps assume root level access and that all required software packages are already installed for example DM Multipath Attach hosts to the storage system Perform the following steps to attach Fibre Channel hosts to the stor...

Page 47: ...the following steps to enable and configure DM multipath NOTE Safeguard and blacklist internal server disk drives from multipath configuration files These steps are meant as a basic setup to enable DM Multipath to the storage system It is assumed that DM Multipath packages are installed For RHEL 7 SLES 12 1 Run the multipath t command to list the DM Multipath status 2 If no configuration exists us...

Page 48: ... 46 ME4024 Controller A Management 10 10 96 128 ME4024 Controller B Management 10 10 96 129 Subnet 1 Server iSCSI NIC 1 172 1 96 46 ME4024 controller A port 0 172 1 100 128 ME4024 controller B port 0 172 1 200 129 ME4024 controller A port 2 172 1 102 128 ME4024 controller B port 2 172 1 202 129 Subnet Mask 255 255 0 0 Subnet 2 Server iSCSI NIC 1 172 2 96 46 ME4024 controller A port 1 172 2 101 128...

Page 49: ...et that you created in the Prerequisites section enter the NIC IP address For example 172 1 96 46 6 Using the planning worksheet that you created in the Prerequisites section enter the NIC subnet mask For example 255 255 0 0 7 Select Next 8 Ping the new network interface and associated storage host ports to ensure IP connectivity 9 Repeat steps 1 8 for each NIC you are assigning IP addresses to NI...

Page 50: ...om the drop down list then click Next b For Stand alone hosts select the Do not group this host option then click Next 7 On the Attach volumes page use the options to change the volume name and size by default two 100GB volumes are created select the pool where the volume will reside and add or delete volumes Click Next NOTE Dell EMC recommends that you update the name with the hostname to better ...

Page 51: ...ll Support web site For a list of supported SAS HBAs see the Dell EMC ME4 Series Storage System Support Matrix on the Dell Support web site 2 Use the SAS cabling diagrams to cable the host servers directly to the storage system 3 Identify SAS HBA initiators to connect to the storage system by doing the following a Open a terminal session b Run the dmesg grep scsi grep slot command c Record the WWN...

Page 52: ...mand to create a mount point for this file system with a referenced name such as VolA 4 Run the mount dev mapper mpatha mnt VolA command to mount the file system 5 Begin using the file system as any other directory to host applications or file services 6 Repeat steps 1 5 for other provisioned volumes from the ME Storage Manager For example to dev mapper mpathb correlating to sg block devices dev s...

Page 53: ...ge use the options to change the volume name and size select the pool for the volume and add or delete volumes Click Next NOTE Dell EMC recommends that you update the name of the volume with the hostname to better identify the volumes 8 On the Summary page review the changes made then click Configure Host Click Yes to return to the Select Host page of the wizard or choose No to close the wizard Cl...

Page 54: ...Cs Management IP Server Management 10 10 96 46 ME4024 Controller A Management 10 10 96 128 ME4024 Controller B Management 10 10 96 129 Subnet 1 Server iSCSI NIC 1 172 1 96 46 ME4024 controller A port 0 172 1 100 128 ME4024 controller B port 0 172 1 200 129 ME4024 controller A port 2 172 1 102 128 ME4024 controller B port 2 172 1 202 129 Subnet Mask 255 255 0 0 Subnet 2 Server iSCSI NIC 1 172 2 96 ...

Page 55: ...to the latest version posted on Dell com support before connecting the ESXi host to the ME4 Series storage system OR Run the following ESX CLI command on every ESXi host before connecting it to the ME4 Series storage system esxcli system settings advanced set int value 0 option VMFS3 HardwareAcceleratedLocking 1 Log in to the VMware vCenter Server 2 On the Configure tab select Storage Storage Adap...

Page 56: ...sful rescan the volumes that are displayed in the Register the host and create and map volumes section are visible 4 Create VMware datastore file system on the volume presented from ME4 Series storage system a On the Configure tab select Datastore Create new datastore a cylinder with sign b Select VMFS as the type on New Datastore screen then click Next c Enter a name for new datastore then select...

Page 57: ...the volumes 8 On the Summary page review the changes then click Configure Host Click Yes to return to the Select Host page of the wizard or choose No to close the wizard Click Previous to go back and change the settings Enable multipathing on SAS volumes Perform the following steps to enable multipathing on SAS volumes 1 Log in to the VMware vCenter Server then click the ESXi host 2 On the Configu...

Page 58: ...ect Storage Devices 3 Perform a rescan of the storage devices 4 Select the iSCSI disk Dell EMC iSCSI disk created in the Register the host and create and map volumes procedure then select the Properties tab below the screen 5 Scroll down to select the Edit Multipathing option then select Round Robin VMware from the drop down list 6 Click OK 7 Repeat steps 4 6 for all the volumes that are presented...

Page 59: ...m chassis This information is used to route support calls to appropriate personnel Operators Ops panel LEDs Each ME4 Series enclosure features an Operators Ops panel located on the chassis left ear flange This section describes the Ops panel for 2U and 5U enclosures 2U enclosure Ops panel The front of the enclosure has an Ops panel that is located on the left ear flange of the 2U chassis The Ops p...

Page 60: ...e IOM or PCM LED illuminates blinking amber when experiencing a logical fault Unit identification display green The UID is a dual seven segment display that shows the numerical position of the enclosure in the cabling sequence The UID is also called the enclosure ID NOTE The controller enclosure ID is 0 Identity LED blue When activated the Identity LED blinks at a rate of 1 second on 1 second off ...

Page 61: ... causing the fault The module fault LED may be associated with a Fault LED on a controller module IOM PSU FCM DDIC or drawer Logical Status LED amber This LED indicates a change of status or fault from something other than the enclosure management system The logical status LED may be initiated from the controller module or an external HBA The indication is typically associated with a DDIC and LEDs...

Page 62: ...place the HBA No It is likely that the controller module needs to be replaced 9 Move the host cable back to its original port Is the host link status LED on No The controller module port has failed Replace the controller module Yes Monitor the connection It may be an intermittent problem which can occur with damaged cables and HBAs Isolating a controller module expansion port connection fault Duri...

Page 63: ...n the 2U enclosure to help troubleshoot initial start up problems PCM LEDs 580 W Under normal conditions the PCM OK LEDs are a constant green Table 11 PCM LED states PCM OK Green Fan Fail Amber AC Fail Amber DC Fail Amber Status Off Off Off Off No AC power on any PCM Off Off On On No AC power on this PCM only On Off Off Off AC present PCM working correctly On Off Off On PCM fan speed is outside ac...

Page 64: ...l Check the event log for errors If the CRU Fault LED is on a fault condition is detected Restart this controller from the partner controller using the ME Storage Manager or CLI If the restart does not resolve the fault remove the controller module or IOM and reinsert it If the previous actions do not resolve the fault contact Dell EMC for assistance Disk drive carrier module LEDs A green LED and ...

Page 65: ...ME4 Series Storage System Owner s Manual Fan Fault Amber indicates that the fan module has failed Follow the procedure in Replacing an FCM in the Dell EMC PowerVault ME4 Series Storage System Owner s Manual Ops panel LEDs The Ops panel displays the aggregated status of all the modules Table 15 Ops panel LED descriptions LED Status description Unit ID display Usually shows the ID number for the enc...

Page 66: ...id drive carrier adapter The following figure shows the top panel of the DDIC as viewed when the disk is aligned for insertion into a drawer slot Figure 33 LEDs DDIC 5U enclosure disk slot in drawer 1 Slide latch slides left 2 Latch button shown in the locked position 3 Drive Fault LED Table 17 DDIC LED descriptions Fault LED Amber Status description Off Off disk module enclosure Off Not present B...

Page 67: ...s If the CRU OK LED is blinking wait for the system to boot If the CRU OK LED is off and the controller module is powered on the module has failed Check that the controller module is fully inserted and latched in place and that the enclosure is powered on Check the event log for specific information regarding the failure If the CRU Fault LED is on a fault condition is detected Restart the controll...

Page 68: ...ough SES Table 20 2U alarm conditions Status Severity Alarm PCM alert loss of DC power from a single PCM Fault loss of redundancy S1 PCM fan fail Fault loss of redundancy S1 SBB module detected PCM fault Fault S1 PCM removed Configuration error None Enclosure configuration error VPD Fault critical S1 Low warning temperature alert Warning S1 High warning temperature alert Warning S1 Over temperatur...

Page 69: ...is recommended 2 Check for restrictions due to dust build up Clean as appropriate 3 Check for excessive recirculation of heated air from rear to front Use of the enclosure in a fully enclosed rack is not recommended 4 Verify that all blank modules are in place 5 Reduce the ambient temperature Thermal alarm Symptom Cause Recommended action 1 Ops panel Module Fault LED is amber 2 Fan Fail LED is ill...

Page 70: ... notification see Table 21 5U alarm conditions Fault isolation methodology ME4 Series Storage Systems provide many ways to isolate faults This section presents the basic methodology that is used to locate faults within a storage system and to identify the pertinent CRUs affected As noted in Using guided setup use the ME Storage Manager to configure and provision the system upon completing the hard...

Page 71: ...iew event logs to monitor the health of the system and its components If a message tells you to check whether an event has been logged or to view information about an event use the ME Storage Manager or the CLI Using the ME Storage Manager view the event log and then click the event message to see detail about that event Using the CLI run the show events detail command to see the detail for an eve...

Page 72: ...example if a host side data error occurs it could be caused by any of the components in the data path controller module cable or data host If the enclosure does not initialize It may take up to two minutes for all enclosures to initialize If an enclosure does not initialize Perform a rescan Power cycle the system Make sure that the power cord is properly connected and check the power source to whi...

Page 73: ...ulty diagnosing performance problems consider swapping out one SFP transceiver at a time to see if performance improves 1 Stop all I O to the storage system See Stopping I O in the Dell EMC PowerVault ME4 Series Storage System Owner s Manual 2 Check the host link status link activity LED If there is activity stop all applications that access the storage system 3 Check the Cache Status LED to verif...

Page 74: ... the storage system 3 Check the Cache Status LED to verify that the controller cached data is flushed to the disk drives Solid Cache contains data yet to be written to the disk Blinking Cache data is being written to CompactFlash in the controller module Flashing at 1 10 second on and 9 10 second off Cache is being refreshed by the supercapacitor Off Cache is clean no unwritten data 4 Remove the h...

Page 75: ...e expansion cable and inspect for damage 5 Reseat the expansion cable Is the expansion port status LED on Yes Monitor the status to ensure that there is no intermittent error present If the fault occurs again clean the connections to ensure that a dirty connector is not interfering with the data path No Proceed to the next step 6 Move the expansion cable to a port on the controller enclosure with ...

Page 76: ...for more information Allow enough ports for replication permits so that the system can balance the load across those ports as I O demands rise and fall If controller A owns some of the volumes that are replicated and controller B owns other volumes that are replicated then enable at least one port for replication on each controller module You may need to enable more than one port per controller mo...

Page 77: ...or optimal protection use multiple switches for host I O and replication Connect two ports from the controller module in the left storage enclosure to the left switch Connect two ports from the controller module in the right storage enclosure to the right switch Connect two ports from the controller modules in each enclosure to the middle switch Use multiple switches to avoid a single point of fai...

Page 78: ...tems for replication multiple servers multiple switches one network shows the rear panel of two 5U enclosures with I O and replication occurring on the same network For optimal protection use multiple switches for host I O and replication Connect two ports from each controller module in the left storage enclosure to the left switch Connect two ports from each controller module in the right storage...

Page 79: ... shows the rear panel of two 5U enclosures with I O and replication occurring on different networks The switch that is on the left supports I O traffic to local network A The switch that is on the right supports I O traffic to remote network B The Ethernet WAN in the middle supports replication traffic If there is a failure at either the local network or the remote network you can fail over to the...

Page 80: ...es that follow Familiarize yourself with replication content provided in the Dell EMC PowerVault ME4 Series Series Storage System Administrator s Guide For virtual replication perform the following steps to replicate an existing volume to a pool on the peer in the primary system or secondary system 1 Find the port address on the secondary system Using the CLI run the show ports command on the seco...

Page 81: ...to ensure compatibility with the other systems See the topic about updating firmware in the Dell EMC PowerVault ME4 Series Storage System Administrator s Guide for more information about compatible firmware No Invalid cabling connection If multiple enclosures are used check the cabling for each system Verify controller enclosure cabling Verify use of proper cables Verify proper cabling paths for h...

Page 82: ...ication data path component Follow any Recommended Actions Click in the Volumes topic and then click a volume name in the volumes list Click the Replication Sets tab to display replications and associated metadata Replications that enter the suspended state can be resumed manually see the Dell EMC PowerVault ME4 Series Storage System Administrator s Guide for additional information No Communicatio...

Page 83: ...SI protocol Install an SFP transceiver Perform the following steps to install an SFP transceiver NOTE Follow the guidelines provided in Electrical safety when installing an SFP transceiver 1 Orient the SFP transceiver with the port and align it for insertion For 2U controller enclosures the transceiver is installed either right side up or upside down depending upon whether it is installed into con...

Page 84: ... transceiver to keep its optics free of dust Verify component operation View the port Link Status Link Activity LED on the controller module face plate A green LED indicates that the port is connected and the link is up NOTE To remove an SFP transceiver perform the installation steps in reverse order relative to what is described in Install an SFP transceiver 84 SFP transceiver for FC iSCSI ports ...

Page 85: ..._ Gateway IPv6 address ________ ________ ________ ______ _____ Domain name DNS server address _____ _____ _____ _____ Secondary DNS server address _____ _____ _____ _____ Table 27 ME4 Series Storage System administrator Item Information Password for the default ME4 Series Storage System Admin user Email address of the default ME4 Series Storage System Admin user iSCSI network information For a sto...

Page 86: ...nformation is also optional but it may be required to complete the Discover and Configure Uninitialized text TBD wizard Table 30 NTP SMTP and Proxy servers Item Information NTP server IPv4 address _____ _____ _____ _____ SMTP server IPv4 address _____ _____ _____ _____ Backup NTP server IPv4 address _____ _____ _____ _____ SMTP server login ID SMTP server password Proxy server IPv4 address _____ _...

Page 87: ...in fabric 2 Item FC switch port Information WWN of storage controller A port 1 WWN of storage controller B port 1 WWN of storage controller A port 3 WWN of storage controller B port 3 System Information Worksheet 87 ...

Page 88: ...nux drivers Use the CLI commands described in the following steps to set the IP address for the network port on each controller module NOTE When new IP addresses are set you can change them as needed using the ME Storage Manager Be sure to change the IP address before changing the network configuration 1 From your network administrator obtain an IP address subnet mask and gateway address for contr...

Page 89: ... that has been deployed a Type the user name of a user with the manage role at the login prompt and press Enter b Type the password for the user at the Password prompt and press Enter 9 If you are connecting to a storage system with G280 firmware that has not been deployed a Type setup at the login prompt and press Enter b Do not type anything at the Password prompt and press Enter If you are conn...

Page 90: ...port Emulated serial port When a computer is connected to a controller module using a mini USB serial cable the controller presents an emulated serial port to the computer The name of the emulated serial port is displayed using a customer vendor ID and product ID Serial port configuration is unnecessary NOTE Certain operating systems require a device driver or special mode of operation to enable p...

Page 91: ...revent the terminal emulator software from reconnecting after the controller module restarts or the USB cable is unplugged and reconnected Workaround To restore a connection that stopped responding when the controller module was restarted 1 If the connection to the mini USB port stops responding disconnect and quit the terminal emulator program a Using Device Manager locate the COMn port that is a...

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