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3 Maintaining Drives

This section describes the drives used in the PS-M4110 blade storage array. It includes information about how to
identify failed drives, how to interpret drive LEDs, array behavior when a drive fails, drive handling
requirements, and how to install and remove drives.

About Drives

The PS-M4110 blade storage array drives are located within the array drawer. They connect to the array, and to
the M1000e, through a bottomplane in the drawer.

The array drives are hot-swappable. You can replace a failed drive while the array remains running.

Drives are supplied in a carrier that is keyed to fit into specific array models and cannot be installed in other
Dell arrays or arrays that are not supplied by Dell Inc.

All the procedures for replacing, handling, and identifying a failed drive are the same for a PS-M4110 as they
are for any other Dell EqualLogicPS Series array.

About Mixed-Drive Arrays (Rotational and Solid State)

The PS-M4110 can support a combination of five solid state drives (SSDs) and 9 rotational drives (HDs) in the
array. The proportion of SSDs to HDs cannot be changed.

The SSDs occupy slots 0-4 by default, but may be used in any drive slot.

Identifying Failed Drives

The drives are numbered 0 through 13 from the front of the array to back.

A drive failure is indicated by:

•

LEDs on the drive. See

Interpreting Drive LEDs on page 28

•

LEDs on the front panel of the array. See

Chapter , Interpreting Control Module LEDs on page 37

•

A message on the console, in the event log, or in the Group Manager Alarms panel.

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Содержание PS-M4110

Страница 1: ...Dell EqualLogic PS M4110 Blade Storage Arrays Hardware Owner s Manual Version 1 0 ...

Страница 2: ...marks and registered trademarks mentioned herein are the property of their respective owners Information in this document is subject to change without notice Reproduction in any manner whatsoever without the written permission of Dell is strictly forbidden Published July 2012 Part Number 110 6106 EN R1 ...

Страница 3: ...slot in the M1000e chassis 21 Verify Proper Installation 24 Releasing the Array Inner Drawer Safety Latch 25 3 Maintaining Drives 27 About Drives 27 About Mixed Drive Arrays Rotational and Solid State 27 Identifying Failed Drives 27 Interpreting Drive LEDs 28 Array Behavior When a Drive Fails 28 Drive Handling Requirements 29 Replacing Drives 29 Drive Installation Guidelines and Restrictions 29 Re...

Страница 4: ...nformation 49 Obtaining Component Diagnostics 49 Troubleshooting Array Startup Failure 50 Troubleshooting Loss of Communication 50 Troubleshooting Array Connections 50 Troubleshooting External Connections 50 Troubleshooting Control Modules 51 Troubleshooting Array Drives 51 Index 53 v PS M4110 Hardware Owner s Manual Table of Contents ...

Страница 5: ...However detailed information about setting up a network is beyond the scope of this manual For related networking information visit support dell com You can also contact your support provider as described in this section in Preface on page vi Related Documentation For detailed information about FS Series appliances PS Series arrays groups volumes array software and host software log in to the Docu...

Страница 6: ...pport telephone system direct your call more efficiently Warranty Information The MODEL array warranty is included in the shipping box For information about registering a warranty visit http support dell com support topics global aspx support warranty Notes Cautions and Warnings Symbols A NOTE symbol indicates important information that helps you make better use of your hardware or software A CAUT...

Страница 7: ...double wide half height blade storage array with one or two hot swappable Type13 control modules and up to 14 drives The PS M4110 blade storage array fits inside and operates only when installed in a Dell EqualLogic Pow erEdge M1000e Blade Enclosure It receives power from and makes all its network connections through the PowerEdge M1000e Blade Enclosure A fully populated Dell PowerEdge M1000e Blad...

Страница 8: ...rray is shown in Figure 2 Table 1 describes the features of the front panel Table 2 describes the drive LED indicators Table 3 describes the warnings and critical conditions that are indicated by the Array Status LED Figure 2 Front Panel Features and Indicators Table 1 Front Panel Feature Descriptions Item Indicator Description 1 Drive Status LEDs Each drive slot is represented by a green element ...

Страница 9: ...is 5 Express Service Tag Pull this tag to see the unit s Dell Express Service Tag number This number is usually required if you need technical support Table 2 Drive LED Descriptions1 Green Element Amber Element Description OFF OFF Drive slot is empty ON OFF One of these statuses drive is online drive is ready drive is a spare foreign drive drive is spun down for removal new drive is present but no...

Страница 10: ...e failure RAID set unresolved Fabric mismatch No communications with CMC Shutting Down and Restarting the Array You can shut down a PS Series array using the Group Manager GUI or the CLI over a telnet or serial connection but this does not turn off power to the array or the enclosure A PS Series array includes hot swappable drives and control modules in a dual redundant module array You can remove...

Страница 11: ... parity No flow control 2 Log in to an account with read write access such as the grpadmin account 3 Execute the shutdown command login grpadmin Password Welcome to Group Manager Copyright 2001 2012 Dell Inc group1 shutdown If you are using a network connection the session will be disconnected before the array is fully shut down If you are using a serial connection to shut down an array it is safe...

Страница 12: ... and A2 The M1000e must have a Version 1 1 midplane to support 10Gb s modules on Fabric A Note If the M1000e has a Version 1 0 midplane 10 Gb s Ethernet IO modules are not supported by Fabric A and the PS M4110 will not be able to connect Fabric B is a redundant Ethernet fabric supporting IO module slots B1 and B2 at 10Gb s with a 10GBASE KR IO module Optionally Ethernet port 1 on the PS M4110 arr...

Страница 13: ...o each redundant M1000e IO module IOM of the configured fabric Assuming that both IO modules are installed One port is active and one port is passive For example if a PS M4110 is configured for Fabric B and both the B1 IOM and B2 IOM are installed the Ethernet ports from each control module are connected to both B1 and B2 IOMs This provides a total of four potential Ethernet paths However only one...

Страница 14: ...connected using inter switch links stack interfaces or link aggregation groups LAG The links must have sufficient bandwidth to handle the iSCSI traffic For ease of management Dell recommends using stacking configurations wherever possible Use the Equal Logic Group Manager GUI or CLI to assign an IP address and netmask to each interface Figure 3 shows an example of stacking B1 and B2 IO modules Con...

Страница 15: ...etwork interruptions that occur when devices restart and it should only be ena bled on switch ports that connect end nodes Some iSCSI BOOT Initiators may not startup reliably when STP is enabled due to the convergence time For further information refer to the associated specifications for your NIC and Switch You can use Spanning Tree for a single cable connection between switches and you can use L...

Страница 16: ...array can be set up for a management port and be accessed through the CMC to keep management traffic separate from iSCSI traffic You can do this by using the Dell Chassis Management Console command line interface CLI or the Equal Logic Group Manager GUI or CLI See Setting up a Dedicated Management Port in the Dell EqualLogic PS M4110 Installation Guide 10 ...

Страница 17: ...entally slide out of the outer shell if it is not closed Warning If the inner drawer slides open unexpectedly the sudden weight shift of the heavy inner drawer could cause the array to fall off the surface it is resting on or to be dropped by a person holding it Damage to the array or injury to yourself or nearby people could result Before handling a PS M4110 blade storage array always check that ...

Страница 18: ... when it is out of the M1000 enclosure see Releasing the Array Inner Drawer Safety Latch on page 25 Caution The front panel is not designed as a handle It can break if treated roughly When opening the array inner drawer do not pull on the front panel Grip and pull the drawer by its top bottom or sides To open the array inner drawer 1 Push firmly on the array s front panel releasing it quickly See ...

Страница 19: ...Drawer to Unlatch It 2 Grip the side or bottom edges of the array drawer not the plastic front panel and slowly pull the drawer out as shown in Figure 6 13 Dell EqualLogic PS M4110 Hardware Owner s Manual Opening the Array Drawer ...

Страница 20: ...ould also break free of its housing and fall on the floor causing damage to array and injury to nearby people Closing the Array Drawer For proper operation the array inner drawer must be completely closed and secured within its housing You can open the drawer briefly to replace a failed component but do not leave it open for long periods of time leaving it open disrupts the flow of air that cools ...

Страница 21: ...ls Each PS M4110 blade array has two release latches Only one release latch is engaged depending on whether the array enclosure is installed in an upper or lower slot in the enclosure The release button above the front panel is used to remove the array from the upper slots in the M1000e enclosure Shown in Figure 8 The release button below the front panel is used to remove the array from the lower ...

Страница 22: ...lease button located above the front panel of the array See Figure 8 This releases the array handle which you use to pull open the array drawer The handle should spring open far enough for you to grip it with your hand Figure 8 Array Upper Release Button 2 Pull the array handle outward to begin sliding the array out of the M1000e enclosure See Figure 9 16 ...

Страница 23: ...carefully When the array enclosure is far enough out of the chassis use both hands to support it and remove it from the chassis Caution The array is heavy Be sure to support it with both hands when you remove it from the M1000e enclo sure After the array is out of the enclosure place it on a sturdy flat surface 17 Dell EqualLogic PS M4110 Hardware Owner s Manual Removing the Blade Drawer From the ...

Страница 24: ... grip it with your hand Figure 10 Array Lower Release Button 2 Pull the array handle outward to begin sliding the array out of the M1000e enclosure See Figure 9 Caution Be careful not to pinch your fingers when removing the array from the lower slots 3 Support the weight of the array with one hand underneath it while you use its handle to pull the array out of the M1000e enclosure Pull the array o...

Страница 25: ...chassis provides power and network connectivity for the PS M4110 array The PowerEdge M1000e Blade Enclosure has 16 single wide half height slots The PS M4110 storage blade array is double wide and half height You can install up to four PS M4110 blade arrays shown in Figure 11 in a PowerEdge M1000e Blade Enclosure shown in Figure 12 Arrays can be installed in any available top or bottom slots in th...

Страница 26: ... covers on the back to protect the rear connectors from damage You must remove the retaining clip and protective covers before installing the array in the M1000e chassis Optionally you can also remove the protective caps covering the serial ports on the front Save the clip and protective covers for future use Install the Array in the M1000e To install the PS M4110 blade array in an M1000e chassis ...

Страница 27: ...ay into a bottom slot in the M1000e chassis a Align the guide rails on the bottom of the PS M4110 array with the guide rails at the bottom inside of M1000e enclosure as shown in Figure 14 b Begin to slide the array into the M1000e enclosure slot making sure that the array s guide rails rest on top of the guide rails within the M1000e enclosure as shown in Figure 14 Be sure to support the front of ...

Страница 28: ...e your thumbs on the front sides of the array on the array s metal housing as shown in Figure 15 Do not push on the plastic front of the array drawer Stop pushing when the array handle slides open The handle will open towards you when the array is inserted most of the way into the slot Note If installing the array into a top slot the top array handle opens in a bottom slot the bottom array handle ...

Страница 29: ...own in Figure 16 Continue pushing on the array handle until the array slides all the way into place in the slot The array handle will slide back into place within the array drawer and you will feel and hear the array click securely into place within the slot 23 Dell EqualLogic PS M4110 Hardware Owner s Manual If installing the array into a bottom slot in the M1000e chas sis ...

Страница 30: ...r ON to the M1000e chassis If the PS M4110 is properly installed the Blade System Status LED on the unit s front panel will light up shortly after the M1000e is powered on See Figure 2 and Table 2 to identify the correct LED If the M1000e is connected to power and turned ON when the PS M4110 is inserted the PS M4110 will power up as soon as it is fully seated in the M1000e but the array s Blade Sy...

Страница 31: ...es the array s drawer to its outer housing This prevents the array s drawer from opening accidentally during handling when outside of the M1000e enclosure To open the array drawer press and hold the release button to manually unlock the safety latch The location of the release button is shown in Figure 17 Caution The release button should only be used when the PS M4110 array is on a level surface ...

Страница 32: ...Dell EqualLogicPS M4110 Hardware Owner s Manual Chapter 2 Handling the Array 26 ...

Страница 33: ...er Dell arrays or arrays that are not supplied by Dell Inc All the procedures for replacing handling and identifying a failed drive are the same for a PS M4110 as they are for any other Dell EqualLogicPS Series array About Mixed Drive Arrays Rotational and Solid State The PS M4110 can support a combination of five solid state drives SSDs and 9 rotational drives HDs in the array The proportion of S...

Страница 34: ...ve OK Amber Drive failed Off No power to drive Array Behavior When a Drive Fails How an array handles a drive failure depends on whether a spare drive is available and whether the RAID set containing the failed drive is degraded For example If a spare drive is available the array automatically uses it to replace the failed drive Performance is nor mal after reconstruction completes If a spare driv...

Страница 35: ...nctioning drive other than a spare from an array If the drive is not a spare the RAID set may become degraded if you remove a functioning drive If you remove a spare replace the drive as soon as possible Do not remove a drive from its carrier This action will void your warranty and support contract Keep the shipping material Return a failed drive to your array support provider in the packaging in ...

Страница 36: ...replacement operation There is a two minute delay between the time you insert a drive and the time the drive is automatically con figured into a RAID set This time interval allows multiple drives to be simultaneously configured in an array which is more efficient than installing a single drive configuring it and then repeating the process For example when you install a drive the timer starts If no...

Страница 37: ...rtially out of its slot exposing enough of the drive to grip with your hands 4 Grip the sides of the drive with your hand to pull it up and out until it is completely free of its slot as shown in Figure 20 Caution Do not pull the drive out of its slot by pulling on the drive release latch This could damage the latch and the drive 31 Dell EqualLogic PS M4110 Hardware Owner s Manual Removing a Drive...

Страница 38: ...lot where you intend to install the drive as described in Opening the Array Drawer on page 12 The array drives are installed with the drive s release latch and LEDs facing upward and the drive s connections facing downward The drive release latch must be fully opened before inserting the drive into the slot To install a drive into the array 1 Wear electrostatic protection when handling a drive See...

Страница 39: ...ustration of the release latch movement 4 Hold the drive by its carrier and insert the drive into an empty slot as shown in Figure 21 Figure 21 Iinstalling a Drive Placing in Array Slot 5 Push the drive into the slot The drive handle will begin to close onto the drive as it is inserted 6 When the drive is fully inserted as far as it can go rotate the drive release latch to its fully closed positio...

Страница 40: ...22 Installing a Drive Securing the Latch Verify that the new drive is operational by examining the LEDs on the front panel as described in Front Panel Features and Indicators on page 2 In addition examine the GUI Member Disks window and the CLI member select show disks command output 34 ...

Страница 41: ...functioning control module is required for array operation The control modules in a PS Series array contain the PS Series firmware which provides the Group Manager GUI the Command Line Reference and all the array and storage management functions and features A PS M4110 blade storage array includes one or two hot swappable Type13 control modules Access PS M4110 control modules by opening the array ...

Страница 42: ...ted control modules About Control Module Configurations While an array can run using only one control module it is not recommended because this creates a single point of failure If a control module fails and a secondary is not available to take over all access to your volumes stops until you replace it Do not mix control module types in an array Always make sure both control modules are the same t...

Страница 43: ... Table 5 Figure 24 Control Module Status LEDs Table 5 Control Module LED Descriptions Callout LED Name State Description 1 Power Off On steady green No power Power OK 2 Activity Off Steady green Steady amber No power secondary control module is not synchronized with active control module or error Active control module serving network I O Secondary control module Cache is synchronized with active c...

Страница 44: ...rol module automatically takes over and becomes active Control module failover is transparent to applications but iSCSI initiators must reconnect to the group IP address Failover behavior for the PS M4110 in the M1000e enclosure is described in detail in the Network Requirements section in Array Networking Considerations on page 6 Maintaining Control Module Firmware A Type13 control module uses a ...

Страница 45: ...ag or place the control module on a surface protected from electrostatic discharge Replacing a Control Module If a control module fails remove it and replace it with a functioning control module as described in this section You will also need to temporarily remove a control module when you want to replace its microSD card Refer to Replacing the microSD Card on page 46 for information about replaci...

Страница 46: ... in the array 1 Remove the control module from the array As described in Removing a Control Module on page 41 2 Remove the SD card from the control module As described in Removing the microSD Card on page 47 3 Install the SD card in the replacement control module As described in Inserting the microSD Card on page 48 4 Insert the replacement control module into the array As described in Installing ...

Страница 47: ...e control module that is now secondary was active before the restart As described in Replacing the Secondary Control Module on page 40 Removing a Control Module Before removing a control module from a PS M4110 blade storage array Review the information at the beginning of Replacing a Control Module on page 39 Attach an electrostatic wrist strap See Protecting Hardware on page 6 Caution Do not remo...

Страница 48: ...l module s release latch will spring open partway to release the control module from the slot 3 Hold down the release button and swing the control module s release latch to its fully open position callout 2 of Figure 26 This begins to eject the control module from the array The control module rises enough out of its slot for you to grip it with your hands 4 Remove the control module Grip it by its...

Страница 49: ...ntrol module This ensures that the new control module runs the correct firmware See Replacing the microSD Card on page 46 Caution Do not operate an array with an empty control module slot If necessary insert a controller blank as a filler to maintain the correct airflow and cooling Return the failed control module in the packaging in which the replacement module was shipped Contact your PS Series ...

Страница 50: ...age drives as shown in Figure 27 Facing the front of the array drawer the left side control module is CM0 and the right side control module is CM1 Figure 27 Location of Control Modules Before removing a control module from a PS M4110 blade storage array Review the information at the beginning of Replacing a Control Module on page 39 Attach an electrostatic wrist strap Protecting Hardware on page 6...

Страница 51: ...control module by its sides and insert it into an empty slot as shown in callout 1 of Figure 28 Figure 28 Inserting a Control Module 4 Continue to slide the control module into the chassis until you feel resistance 5 Rotate the release lever inward and down which pushes the control module completely into the slot The latch on the lever will snap into place See callout 2 of Figure 28 6 Check to mak...

Страница 52: ...odule s internal firmware and the control module will no longer function properly In this case contact your support provider Replacing the microSD Card Each control module includes a microSD card that contains the PS Series firmware If a control module fails you need to remove the microSD card from the failed control module and install the card in the replacement control module This will make sure...

Страница 53: ...d in its slot to release the spring mechanism callout 1 in Figure 29 The microSD card will partially eject itself from the housing 2 Gently pull the card straight out of the slot callout 2 in Figure 29 3 Place the microSD card on a flat surface where it will be protected from electrostatic charge Figure 29 Removing the microSD Card 47 Dell EqualLogic PS M4110 Hardware Owner s Manual Removing the m...

Страница 54: ...ntrol module callout 1 in Figure 30 When correctly positioned the notch on the card will correspond to the slot Figure 30 Inserting the microSD Card 2 Firmly press the card into the slot until it clicks into place callout 2 in Figure 30 3 Install the control module in the array See Installing a Control Module on page 44 4 Make sure the control module is operational See Interpreting Control Module ...

Страница 55: ...s might not be available in your area Refer to the Preface on page vi for information about the warranty and how to obtain technical support and customer service Express Service Tag Information Each PS M4110 blade storage array has an Express Service Tag number on a pull out luggage tag labeled EST near the front bottom edge of the array drawer See Figure 2 on page 2 Have the number available for ...

Страница 56: ...formation about troubleshooting loss of communication see Array Networking Considerations on page 6 Troubleshooting Array Connections The PS M4110 is connected to the M1000e enclosure by internal connections between the array and the enclosure There are no cable connections that you can check for problems but you can Confirm that the PS M4110 blade array is properly seated within the M1000e enclos...

Страница 57: ...e Notes and the doc ument Updating PS Series Storage Array Firmware These documents are available on the customer support web site See the Chapter Preface on page vi for information about accessing the customer support web site If the control module problem cannot be resolved contact customer support as described in the Preface on page vi Troubleshooting Array Drives Check the hard drive indicator...

Страница 58: ...Dell EqualLogicPS M4110 Hardware Owner s Manual Chapter 5 Troubleshooting Your Array 52 ...

Страница 59: ...ailure behavior 28 failure indications 27 handling requirements 29 LEDs 28 locating 27 protecting 29 removing from array 29 verifying operational status 34 E electrostatic discharge avoiding 6 electrostatic wrist strap using 6 enclosure closing 14 opening drawer 12 F failover control module 38 failure indications control modules 37 disks 27 firmware identifying version 39 requirements 38 Flow Cont...

Страница 60: ... 6 7 network requirements 6 7 protecting from discharge 6 subnet access recommendation 8 R removing drive 30 requirements control modules 39 disks 29 firmware 38 S shutting down an array 4 Spanning Tree recommendation 9 status control modules 37 switches Flow Control recommendation 9 Jumbo Frames recommendation 9 Spanning Tree recommendation 9 unicast storm control recommendation 9 T troubleshooti...

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