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Chapter 2 - Topology and Operating Modes

How Available are Clusters?

This table outlines the maximum availability per downtime in the different

architectures:

Application of Availability

The NexStor 4700F Series RAID Storage Systems implementation of availability

within its supported topologies are as follows:

Architecture

Maximum Availability

Downtime per Failure

Downtime per Year

(in minutes)

Continuous Processing

100.00%

None

Fault-Tolerant

99.9999%

Cycles

0.5 - 5

Clusters

99.9 - 99.999%

Seconds to
minutes

5 - 500

High Availability

99.9%

Minutes

500 - 10,000 (disk
mirroring)

Stand Alone System

99.5%

Hours

2,600 - 10, 000
(without disk
mirroring)

Architecture

Corresponding Topology

Continuous Processing

Not Available

Fault-Tolerant

Not Available

Cluster

Simplex Cluster

High Availability

Simplex Dual Host and Simplex Quad Host

Stand Alone System

Simplex Single Host

4700F.book Page 23 Wednesday, April 6, 2005 11:05 AM

Содержание NexStor 4700F Series

Страница 1: ...U S E R S G U I D E NexStor 4700F Series R A I D S T O R A G E S Y S T E M S 4700F book Page 1 Wednesday April 6 2005 11 05 AM...

Страница 2: ...4700F book Page 2 Wednesday April 6 2005 11 05 AM...

Страница 3: ...U S E R S G U I D E NexStor 4700F Series R A I D S T O R A G E S Y S T E M S 4700F book Page 3 Wednesday April 6 2005 11 05 AM...

Страница 4: ...Carlsbad CA 92009 Copyright 2005 nStor Corporation Inc All Rights Reserved nStor StorView NexStor the NexStor logo the StorView logo and the nStor logo are trademarks or registered trademarks of nSto...

Страница 5: ...FF Transceiver 12 Battery Backup Unit 12 Embedded SES Support 13 Control and Monitoring 14 Status Indicator LEDs 14 Drive LEDs 15 Audible Alarm 15 2 Topology and Operating Modes 17 Topology 17 Simplex...

Страница 6: ...37 Direct Attach Connection Single Host Single HBA 37 Direct Attach Connection Single Host Dual HBAs 38 Clustered Connection Dual Hosts Single HBA 39 SAN Connection Multiple Hosts Switch 40 Powering...

Страница 7: ...a RAID Controller 71 Replacing the Backup Battery 72 Replacing the Enclosure 74 A Technical Information 77 Specifications 77 B Port Information 81 Connectors 81 RS 232 Service Port 81 Null Modem Cable...

Страница 8: ...Table of Contents iv 4700F book Page iv Wednesday April 6 2005 11 05 AM...

Страница 9: ...gh Serial Advanced Technology Architecture SATA disk drives in a 2U 3 5 inch form factor Component redundancy is provided through a hot pluggable cooling fan module and a redundant N 1 power system wi...

Страница 10: ...two models NexStor 4711F 512MB Cache Memory with a Backup Battery NexStor 4712F 1GB Cache Memory with a Backup Battery This user s guide is your complete documentation for an understanding of the comp...

Страница 11: ...ID Storage Systems 2Gb sec Fibre Channel to Serial ATA storage system Hot pluggable Serial ATA disk drives 12 per enclosure Hot pluggable cooling fan module with dual in line fans A standard AC power...

Страница 12: ...DDR SDRAM Support for up to 512 Logical Drives Supports RAID levels 0 1 5 10 and 50 Online capacity expansion allowing reconfiguration without interruptions Firmware based menu driven intuitive termin...

Страница 13: ...n provides a pictorial view of the enclosure front and rear components the Components section gives a detailed description of each major component and the Monitoring section describes the enclosure s...

Страница 14: ...Views Hot pluggable power supply AC PSU shown FC SATA RAID Controller Dual in line 80 CFM hot swappable cooling fan module Option for second power supply Blank plate shown RS 232 DTE H0 H1 BK0A PTN R...

Страница 15: ...es the signals to the front panel through a smart interface Power is applied to the front bezel through the interface edge connector where a control circuit monitors the bezel for proper connection Wh...

Страница 16: ...t hot pluggable power supplies each with independent AC power cords and cooling fans The base system has one power supply with an option for a second power supply Each power supply has auto switching...

Страница 17: ...ign to secure the power cord once it has been properly inserted The bale prevents inadvertent disconnects Optional DC Hot Swappable Power Supplies NOTE Information provided here regarding the site req...

Страница 18: ...only for qualified or trained personnel only Access should be controlled by key lock or access card Each power supply has a special cable connector that plugs into the face of the power supply and mec...

Страница 19: ...1581 VW 1 IEEE 383 compliant or IEEE 1202 1991 compliant Grounding insulation color green yellow Cooling Fan Module The cooling system consists of two high performance 80 CFM cooling fans mounted in...

Страница 20: ...ted by the monitoring system and report in the form of notifications giving the user a warning that a condition is causing the enclosure temperature to exceed the preset maximum allowable value An act...

Страница 21: ...ding page two jumpers are provided on the fan module printed circuit board to override the software control of the fan speeds This hardware setting routes full power voltage to the fans for maximum op...

Страница 22: ...connectors are labeled H0 and H1 The H0 connector provides access to the controller port 0 C0P0 and the H1 connector provides access to controller port 1 C0P1 The disk drive interface provides indepen...

Страница 23: ...Adjacent to each host port connector are two LEDs H0A H1A and H0L H1L They indicate the activity of the loop H0A and H1A and the status of the loop H0L and H1L Refer to the illustration below for desc...

Страница 24: ...erruptions but is capable of maintaining the memory content for several hours depending on the type and size of the memory The battery control circuitry has constant current using a constant voltage C...

Страница 25: ...re environmental conditions This is accomplished through the controller firmware and is known as SES processes SES protocol provides the interface specification for monitoring enclosure component stat...

Страница 26: ...to VT 100 Interface Enclosure Monitoring on page 48 for complete details Front Bezel LEDs and Reset Button Identification Status Indicator LEDs The Status Indicator LEDs comprise the Power On LED Cha...

Страница 27: ...k drive slot There are 12 Drive Status and 12 Drive Activity LEDs one group for each disk drive Refer to Drive LEDs on page 45 for detailed information Audible Alarm An audible alarm will sound when a...

Страница 28: ...Chapter 1 Getting Started Audible Alarm 16 4700F book Page 16 Wednesday April 6 2005 11 05 AM...

Страница 29: ...ovides storage solutions with some level of redundancy With its multiple port topology the controller provides two active independent FC ports There are five topologies with this operating mode The la...

Страница 30: ...ard single or dual ported direct attached configurations The host employs a dual ported FC HBA or two single ported FC HBAs In this configuration you will have two 2Gb paths to the storage The multipl...

Страница 31: ...dependent 2Gb paths to the storage This configuration solution does not require an external hub or switch SAN Connection Multiple Hosts Switch This SAN topology supports standard fibre channel infra s...

Страница 32: ...anages multiple paths between the host operating system and LUNs The software manages the multiple paths by detecting duplicate disk objects that represent a single LUN It then designates one disk obj...

Страница 33: ...UNIX systems can provide 99 5 uptime Adding a RAID storage system can increase the uptime to 99 9 The goal of clustering is 99 99 availability Beyond clustering fault tolerant systems can provide 99...

Страница 34: ...nly see a 1 4 1 6x improvement Although clusters seem to be relatively simple they involve complex technology that can be implemented in a variety of ways The number of nodes supported and type of int...

Страница 35: ...ity Downtime per Failure Downtime per Year in minutes Continuous Processing 100 00 None 0 Fault Tolerant 99 9999 Cycles 0 5 5 Clusters 99 9 99 999 Seconds to minutes 5 500 High Availability 99 9 Minut...

Страница 36: ...Chapter 2 Topology and Operating Modes Application of Availability 24 4700F book Page 24 Wednesday April 6 2005 11 05 AM...

Страница 37: ...oth and trouble free installation The installation is divided into two sections The first section describes installing the enclosure s into the rack cabinet or installing the enclosure chassis into th...

Страница 38: ...will easily reach between them CAUTION The power supplies should be removed prior to installing the enclosure into the rack cabinet The enclosure chassis could be damaged during installation due to t...

Страница 39: ...the rack cabinet vertical supports using the screws and nuts provided Attaching the Rails 6 Lift the enclosure into the rack cabinet and align the rear mounting rails with the slots at the rear of th...

Страница 40: ...he power supplies Slide each power supply into its empty bay and ensure it seats completely and that the release latch resets 9 Continue now with Completing the Installation on page 32 Front Rack Vert...

Страница 41: ...slide the release latch to the right with your thumb while pulling it from the enclosure 4 Remove the tower stand case from its shipping carton and inspect for obvious damage 5 Locate the accessory ki...

Страница 42: ...nto the Tower Stand 30 10 Secure the top and bottom slide rails using the remaining two sets 4 of 10 32 pan head screws Inserting and Securing the Chassis Mounting Screws Mounting Screws Mounting Scre...

Страница 43: ...t into its open bay and ensure it seats completely and the release latch resets 12 Re install the power supplies Slide each power supply into its open bay and ensure it seats completely and the releas...

Страница 44: ...quired drive slots NOTE The drive carrier has tension clips in the rail to ensure a snug fit so it requires some force to seat the drive Installing Disk Drives c Install the front bezel The bezel moun...

Страница 45: ...the DC Power Supplies on page 34 Attaching the Front Bezel Rack and Tower Models a Ensure that the orientation is such that when the power cord is inserted the bale will be on top of the cord and will...

Страница 46: ...DC Power Supply Connector Pinout on page 83 for wiring and connector details If you are using the DC Power Supply system refer to the following procedures to properly connect the cables 1 Plug the con...

Страница 47: ...on was ordered 6 Repeat the above steps for each additional storage system enclosure you will be installing This completes the physical hardware installation refer to Before You Continue on page 36 Re...

Страница 48: ...power on or power off your storage system Special Note for Microsoft Windows 2000 2003 Installations At startup you will see the Found New Hardware Wizard appear Although a driver is not required for...

Страница 49: ...guide for procedures to set the controller port IDs Simplex Mode The Simplex stand alone operating mode provides a single enclosure with a single FC SATA RAID Controller solution This solution is des...

Страница 50: ...ect one cable from the Host HBA FC port to the left H0 connector on the RAID Controller b Connect a second cable from a second Host HBA FC port or the second FC port of a dual ported HBA to the right...

Страница 51: ...ft H0 connector on the RAID Controller b Connect a second cable from a second Host 2 HBA FC port to the right H1 connector on the RAID Controller Clustered Connection Dual Host Cabling Diagram 3 Power...

Страница 52: ...ort to the left H0 connector on the RAID Controller SAN Connection Multiple Host Cabling Diagram b Connect a second cable from the switch FC port to the right H1 connector on the RAID Controller 4 Pow...

Страница 53: ...tem 3 After the storage system has completed its self test power on the host computer s that are connected to the storage system The storage system will indicate it has completed its self test through...

Страница 54: ...Chapter 3 Setup and Installation Powering Off the Storage System 42 4700F book Page 42 Wednesday April 6 2005 11 05 AM...

Страница 55: ...EDs power supply LEDs Drive LEDs and the software to monitor the enclosure components fan status disk drive status controller status and arrays Enclosure Component Monitoring This section provides an...

Страница 56: ...wer Supply Status LED indicates the condition of the power supplies The LED will illuminate green when both power supplies are functioning normally and will change to amber if one of the power supplie...

Страница 57: ...ctivity Refer to LED Matrix on page 47 Drive Status LEDs There are twelve Drive Status LEDs The Drive Status LED is the left LED of each pair of Drive LEDs This LED will illuminate steady green when a...

Страница 58: ...ny of the enclosure s component condition changes to an abnormal state To silence the alarm press the Alarm Reset button located on the front bezel The corresponding LED will remain illuminated until...

Страница 59: ...Drive Ready Not Assigned to an Array Blinking Green N A N A Drive Ready Assigned to an Array Steady Green N A N A Drive Failure Blinking Amber All other drive members are Steady Amber Steady Amber Con...

Страница 60: ...232 cable to the RS 232 Service port located on the RAID Controller The null modem cable is included with the storage system RS 232 Service Port Connection 2 Connect the other end of the cable to eith...

Страница 61: ...e in Monitor mode command prompt displayed type rs and press Enter This will restart the controller using the corrected communication settings 7 If the menu system does not automatically appear after...

Страница 62: ...hapter 4 Managing and Monitoring VT 100 Interface Enclosure Monitoring 50 Enclosure Information Screen 9 Press the Esc key to return to the Main menu 4700F book Page 50 Wednesday April 6 2005 11 05 AM...

Страница 63: ...ncluded with the storage system RS 232 Service Port Connection 3 Connect the other end of the cable to either a host system s RS 232 serial communication port or a VT 100 type terminal port 4 Power on...

Страница 64: ...e 8 If the menu system does not automatically appear after the controller has completed its boot cycle at the screen cursor type Control E Then type Control W to switch the interface to the menu based...

Страница 65: ...e Download Firmware Screen At the bottom of the screen a series of C characters will be displayed 13 When the C s appear click the Transfer pull down menu selection and choose Send File Then select th...

Страница 66: ...ing firmware any time during the transfer until it has been completed The upload does not overwrite the firmware during the upload process it writes the new code into RAM until completed then copies t...

Страница 67: ...ed to the power module AC PSU If the enclosure is plugged into a three hole grounded outlet verify that power to the outlet has not been interrupted This can be accomplished by testing the outlet with...

Страница 68: ...The logical drive will now be displayed Microsoft Windows Only A logical drive was created and formatted The logical drive is removed and a new logical drive created using part or all of the space fro...

Страница 69: ...gs at Loading Bridge during BFLU Loader Menu Re flash the firmware to ensure you are using the latest version See Upgrading Firmware in the VT 100 or StorView software guides If you cannot update the...

Страница 70: ...ty Transceiver 1 Verify that the transceiver is functional valid Link H0L or H1L LED You may wish to swap the transceiver for a known good transceiver 2 Ensure that both the transmit and receive funct...

Страница 71: ...y Replace the missing power supply and turn it on Verify that proper AC power is available to the power supplies If the enclosure is plugged into a three hole grounded outlet verify if power to the ou...

Страница 72: ...te mismatch between the terminal emulator and the enclosure The baud rate can be set from 9 600 to 115 200 1 Shut down the controller Refer to the software user s guide 2 Power down the enclosure 3 Fo...

Страница 73: ...components as well as the entire storage system enclosure Removing the Front Bezel 1 Using a Phillips screwdriver unlock the two front bezel fasteners Unlocking the Front Bezel Rotate the fasteners co...

Страница 74: ...aintenance Removing the Front Bezel 62 2 Grasp and pull the front bezel from the enclosure Refer to the illustration below Removing the Front Bezel Reset Alarm 4700F book Page 62 Wednesday April 6 200...

Страница 75: ...ule is removed 1 The cooling fan module is located at the rear of the enclosure Place your fingers in the fan module handle and slide the latch with your thumb while pulling the module from the enclos...

Страница 76: ...with the opening fan bay and push the module into the enclosure until it completely seats The latch will reset when the module is completely seated The front bezel Fan Status LED will return to a norm...

Страница 77: ...the system operational while you replace the failed power supply 2 Disconnect the AC power cord Release the power cord bale and pull the cord from the AC power cord module on the power supply Releasin...

Страница 78: ...pen bay and ensuring it seats completely and the release latch resets 6 Re connect the power cord Insert the power cord into the AC power cord module and secure it with the power cord bale 7 Turn the...

Страница 79: ...e system operational while you replace the failed power supply 2 Disconnect the DC power cable Squeeze the connector latches and pull the power cable from the DC power cable module on the power supply...

Страница 80: ...ensuring it seats completely and the release latch resets 6 Re connect the DC power cable Insert the power cable connector into the DC power cable module It secures when the connector s latches reset...

Страница 81: ...Be careful of the P factor effect when removing a disk drive which is the twisting of the drive in your hand as a result of the spinning disk Allow the drive to completely spin down before removing i...

Страница 82: ...t disk drive a Align the drive carrier with the rail grooves in the drive bay b Ensure that the drive seats completely The drive carrier tension clips ensure that the disk drive fits snug so it requir...

Страница 83: ...shipping container and inspect for obvious damage Save the packaging materials 4 Install the new replacement controller into the enclosure Orient the controller correctly and slide it into the open b...

Страница 84: ...t system Refer to the StorView Storage Management or VT 100 Software Guides for details on shutting down the RAID Controller 3 Power down the enclosure Refer to Powering Off the Storage System on page...

Страница 85: ...tery Access Plate Using the two 4 Phillips screws previously removed secure the battery Refer to the illustration on the previous page 10 Connect the BBU power cable to the controller circuit board at...

Страница 86: ...ation of the location of the data cables prior to disconnecting or removing these items To facilitate correct installation you may want to tag the cables appropriately 3 Disconnect the data cables and...

Страница 87: ...Re install the cooling fan module 13 Re install the RAID controller 14 Reconnect the data cables and power cords cables Refer to the notations made prior to removing the cables for their proper connec...

Страница 88: ...Chapter 6 Maintenance Replacing the Enclosure 76 4700F book Page 76 Wednesday April 6 2005 11 05 AM...

Страница 89: ...equirements 36 to 72 VDC Current per input 48 to 72 VDC Dimensions Rack Mount Unit HxWxD Dimensions Tower Unit HxWxD 3 47 x 17 65 x 20 25 20 00 x 8 00 x 21 50 Weights Rack Mount Unit NexStor 4711F 471...

Страница 90: ...or 32 MB 72 bit ECC protected DDR memory PC200 bus speed internal PCI X 64 bit 133 MHz secondary bus Cache Memory ECC protected 512 MB or 1 GB DDR SDRAM Host Device Data Rate 2Gb sec per channel Host...

Страница 91: ...tains the 512MB data cache SDRAM for over 20 hours with coprocessor installed 1 GB data cache SDRAM for over 10 hours Temperature Normal Non Operating 5o C to 50o C 20o C to 70o C Humidity Operating o...

Страница 92: ...Appendix A Technical Information Specifications 80 4700F book Page 80 Wednesday April 6 2005 11 05 AM...

Страница 93: ...RS 232 Service port interface to the controllers firmware program The VT 100 interface to the firmware program provides access to the configuration utility firmware updates utility maintenance and mo...

Страница 94: ...ions This cable is used to connect a terminal to the SES Controller card RS 232 Service port It is a DB 9 female to DB 9 female null modem type Below is a pin out of the cable DB 9 to DB 9 Type Null M...

Страница 95: ...r feed system NOTE Use only the DC power cables provided with the system Before connecting the cable to the source be sure the wiring has the correct pin out as indicated below The connectors are Mole...

Страница 96: ...Appendix B Port Information DC Power Supply Connector Pinout 84 4700F book Page 84 Wednesday April 6 2005 11 05 AM...

Страница 97: ...ion in conformity with the Title 47 of the US Code of Federal Regulations Part 15 covering Class A personal computers and peripherals Operation is subject to the following two conditions 1 This device...

Страница 98: ...d to correct the interference at his own expense nStor Corporation is not responsible for any interference caused by unauthorized modifications to this equipment It is the user s responsibility to cor...

Страница 99: ...se Statement CE Notice Marking by the CE symbol indicates compliance of the device to directives of the European Community A Declaration of Conformity in accordance with the above standards has been m...

Страница 100: ...rounding type attachment plug rated 15A 250V configuration 6 15P at the other end For 230 Volt Operation Europe Use a cord set marked HAR consisting of a H05VV F cord that has a minimum 0 75 square mm...

Страница 101: ...Fan Status LED 45 Front Bezel 3 Power Supply Status LED 44 Power On LED 44 RAID Controllers 10 Transceiver 12 Connectors 81 Controller Features 78 Controller Firmware 51 Cooling Fan Module 7 D Data Av...

Страница 102: ...odem cable 82 RS 232 Service Port 81 Power Cord Bale 34 Power Requirements AC 77 DC 77 RAID Controller 79 Power Supply AC 4 DC 5 Power Supply Status LED 44 Power Supply Status LED is illuminated 59 Po...

Страница 103: ...Taiwanese Statement Class A 87 Technical Specifications 77 Temperature RAID Controller 79 Terminal screen problems 60 Topology 17 Tower Stand 29 Troubleshooting Logical Drive and OS 56 U Unlocking th...

Страница 104: ...Index 92 4700F book Page 92 Wednesday April 6 2005 11 05 AM...

Страница 105: ...4700F book Page 93 Wednesday April 6 2005 11 05 AM...

Страница 106: ...Corporate Office www nstor com 91 9 94670001 B April 2005 nStor Corporation Inc 6190 Corte Del Cedro Road Carlsbad CA 92009 760 683 2500 4700F book Page 94 Wednesday April 6 2005 11 05 AM...

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