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PS4100 Hardware Maintenance Guide

Table of Contents

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Troubleshooting External Connections.....................................................................................................................36

Troubleshooting Power Supply and Cooling Modules .............................................................................................36

Troubleshooting Array Cooling Problems................................................................................................................37

Troubleshooting Control Modules ............................................................................................................................37

Troubleshooting Hard Drives....................................................................................................................................38

Index............................................................................................................................................................ 39

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Summary of Contents for PS4100

Page 1: ...PS4100 Hardware Maintenance Guide Version 1 0 ...

Page 2: ...emark All trademarks 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 June 2011 Part Number 110 6063 EN R1 ...

Page 3: ...ing Down and Restarting an Array 5 2 Maintaining Drives 7 About Drive Types 7 Identifying Failed Drives 7 Interpreting Drive LEDs 7 Array Behavior When a Drive Fails 8 Drive Handling Requirements 9 Drive Installation Guidelines and Restrictions 9 Removing a 2 5 inch Drive 10 Installing a 2 5 inch Drive 11 Removing a 3 5 inch Drive 12 Installing a 3 5 inch Drive 13 Installing a Drive Blank 14 Remov...

Page 4: ... 24 Removing the MicroSD Card 25 Inserting the MicroSD Card 26 Advanced Networking Options 26 Configuring the Management Port 27 4 Maintaining Power Supply and Cooling Modules 29 About AC Power Supplies 29 Power Supply LEDs 29 Removing a Power Supply and Cooling Module 30 Installing a Power Supply and Cooling Module 31 5 Troubleshooting Your Array 35 Safety First For You and Your array 35 Obtainin...

Page 5: ...ide Table of Contents v Troubleshooting External Connections 36 Troubleshooting Power Supply and Cooling Modules 36 Troubleshooting Array Cooling Problems 37 Troubleshooting Control Modules 37 Troubleshooting Hard Drives 38 Index 39 ...

Page 6: ......

Page 7: ...ware or loss of data if instructions are not followed A WARNING indicates a potential for property damage personal injury or death Recommended Tools You will need the following items to perform the procedures in this section Bezel key Wrist grounding strap Protecting Hardware Protect a PS Series array from electrostatic discharge When handling array hardware make sure you use an electrostatic wris...

Page 8: ...sical security of the array You must remove the bezel to access and maintain the drives The bezel has a label that identifies the array model number Removing the Bezel The steps for removing the bezel are the same for all array models 1 Using the bezel key unlock the bezel 2 Holding the bezel lift the latch on the left side of the bezel and swing the left side away from the array 3 Lift the right ...

Page 9: ...ng the Bezel Front Panel Features and Indicators The front of a PS4100 without the bezel is shown in Figure 3 and Figure 4 Table 1 describes the front panel features Figure 3 Front Panel Features and Indicators 3 5 inch Drives Figure 4 Front Panel Features and Indicators 2 5 inch Drives ...

Page 10: ...cribes the back panel features Figure 5 Back Panel Features Item Indicator Icon Description 1 Array status LED The array status LED lights when the array power is on Off No power Steady blue Array status is OK Blinking blue Administrator request to identify the array see the Group Administration online help Steady amber Critical status Blinking amber Warning 2 Power LED The power LED is ON when at...

Page 11: ...ace on the array Do not connect to the group IP address Use the null modem cable shipped with the array to connect to the serial port on the active control module ACT LED is green to a console or a computer running a terminal emulator Make sure the serial line characteristics are as follows 9600 baud One STOP bit No parity 8 data bits No flow control 2 Log in to an account with read write access s...

Page 12: ... both control modules If you are using a network connection the session will be disconnected before the array is fully shut down Confirm that the ACT LED on each control module is off not lit before turning off power to the array After performing array maintenance you can turn on power to the array When the array restart completes the member and volumes will be set online login grpadmin Password W...

Page 13: ...onsole in the event log or in the Group Manager Alarms panel Indications in the Group Manager Member Disks window or the CLI member select show disks command output Behind the bezel arrays have a label showing the drive numbering for that specific array model In arrays with 2 5 inch drives installed vertically in a row the drives are numbered 0 23 left to right In arrays with 3 5 inch drives insta...

Page 14: ... example If a spare drive is available the array automatically uses it to replace the failed drive Performance is normal after reconstruction completes If a spare drive is not available the RAID set will become degraded except a RAID 6 set Performance may be impaired A RAID 6 set can survive two simultaneous drive failures Description Indicator States Drive activity indicator ACT LED Blinking gree...

Page 15: ...her than a spare from an array If the drive is not a spare the RAID set may become degraded 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 which the replacement drive was shipped Shipping dri...

Page 16: ...rive the timer starts If no other drives are installed the drive is configured after a delay of two minutes If you install another drive before two minutes have elapsed the timer is restarted If you install a drive during RAID reconstruction or verification the new drive will not be configured until the operation completes Removing a 2 5 inch Drive 1 Remove the bezel See Removing the Bezel on page...

Page 17: ...nch drives are installed vertically with the drive release latch on the top and the drive label on the bottom 1 Wear electrostatic protection when handling a drive See Protecting Hardware on page 1 2 Open the drive release latch 3 Hold the drive by the carrier and slide the drive most of the way into a slot callout 1 in Figure 9 ...

Page 18: ...handle until you hear a click callout 4 Figure 9 Installing a 2 5 inch Drive Verify that the new drive is operational by examining the LEDs on the front panel as described in Interpreting Drive LEDs on page 7 In addition examine the GUI Member Disks window and the CLI member select show disks command output Removing a 3 5 inch Drive 1 Remove the bezel See Removing the Bezel on page 2 ...

Page 19: ...e of the drive bay callout 3 Figure 10 Removing a 3 5 Inch Drive Installing a 3 5 inch Drive The 3 5 inch drives are installed horizontally with the drive release latch to the left and the drive label to the right 1 Wear electrostatic protection when handling a drive See Protecting Hardware on page 1 2 Open the drive release latch 3 Hold the drive by the carrier and slide the drive most of the way...

Page 20: ...1 Installing a 3 5 inch Drive Verify that the new drive is operational by examining the LEDs on the front panel as described in Interpreting Drive LEDs on page 7 In addition examine the GUI Member Disks window and the CLI member select show disks command output Installing a Drive Blank 1 Remove the bezel See Removing the Bezel on page 2 2 Insert the drive blank into the drive bay until the blank i...

Page 21: ...ive blanks installed 1 Remove the bezel See Removing the Bezel on page 2 2 Press the release tab and slide the drive blank out until it is free of the drive bay See Figure 12 or Figure 13 Figure 12 Removing and Installing a 3 5 Inch Hard Drive Blank Figure 13 Removing and Installing a 2 5 Inch Hard Drive Blank Item Description 1 Drive blank 2 Release tab ...

Page 22: ...PS4100 Hardware Maintenance Guide Maintaining Drives 16 ...

Page 23: ...ACT activity that indicate the status of the control module A recessed button labeled STANDBY ON OFF that allows you to quickly shut down the array in certain circumstances see About the Standby On Off Button on page 21 for more information One serial port for use if there is no network access to the array A field replaceable microSD card containing the PS Series firmware A release button and latc...

Page 24: ...ust be a blank filler in the empty con trol module slot Dual Controller Configuration A dual control module configuration eliminates a single point of failure in the array If the active control module fails the secondary control module takes over immediately with no interruption of service This gives you time to replace the failed control module while your volumes and data remain accessible Interp...

Page 25: ...ng recently used data For redundancy the cache on the secondary control module mirrors the data that is stored in the cache on the active control module The active control module can use network interfaces on the secondary control module if there is a cable connected from the corresponding port on the secondary control module to a network switch Therefore you should connect cables to all the netwo...

Page 26: ... array both control modules must be running the same firmware ver sion otherwise only one control module will be functional When you update the array firmware both con trol modules are updated to the same firmware version Group members should run the same firmware version otherwise only the functionality common to all versions will be available in the group See the PS Series Release Notes for info...

Page 27: ...h member separately Note Only a user with group administrator privileges can enable the standby feature on the group However anyone can press the button and the group cannot determine who put the array into standby on off mode Therefore group administrators should consider their environment s security concerns before enabling this feature Using the Standby Button After the feature is enabled group...

Page 28: ... replace its microSD card Note For proper cooling do not leave a control module slot empty If an array will operate for a long time with only one control module you must install a blank in the empty slot You can order a control module blank from your PS Series array service provider You can partially or completely remove a control module without shutting down the array if the remaining control mod...

Page 29: ...eplacing the MicroSD Card on page 24 Caution Do not operate an array with an empty control module slot Return the failed control module in the packaging in which the replacement module was shipped Contact your PS Series support provider for information about returning hardware Installing a Control Module You can install a control module without shutting down the array Caution Do not mix control mo...

Page 30: ... is shown in the GUI or CLI the control module may not be properly installed Reinstall the control module If both control modules still are not shown in the GUI or CLI they may not be running the same firmware Contact your array support provider Replacing the MicroSD Card Each control module includes a microSD card that contains the PS Series firmware If a control module fails remove the microSD c...

Page 31: ...roSD Card Caution To reduce the risk of losing or damaging the microSD card do not remove it until you are ready to install it in the replacement control module 1 Firmly push the card into its housing to release the spring mechanism Figure 19 The microSD card will be partially ejected from the housing Figure 19 Ejecting the MicroSD Card 2 Gently pull the card straight out of the housing 3 Place th...

Page 32: ... Installing a Control Module on page 23 4 Make sure the control module is operational See Interpreting Control Module LEDs on page 18 Advanced Networking Options In addition to connecting all the Ethernet ports on both control modules to network switches you can also optionally connect the Management port to a separate network switch Configuring a management port enables you to separate management...

Page 33: ...This is considered an advanced configuration available if your environment requires this level of security Hardware Steps 1 Make sure your network environment can support a dedicated management network with a subnet that is separate from the subnets for iSCSI traffic 2 On both control modules connect the port labeled MANAGEMENT to the management network Software Steps See the Group Administration ...

Page 34: ...PS4100 Hardware Maintenance Guide Maintaining Control Modules 28 ...

Page 35: ...ries array receives A C power from two power supply and cooling modules PSUs The fans that keep the array cool are integrated into the power supply modules and cannot be replaced separately If a fan fails you must replace the entire power supply module The PS4100 has two 700 Watt PSUs Each 700W power supply has two cooling fans Power Supply LEDs The power supply and cooling modules have LEDs that ...

Page 36: ...ation Power supply is connected to AC power and the power switch is on The power supply module is supplying DC power to the array OFF when any of these is true The power switch is off The power supply is not connected to AC power There is a fault condition For a list of warning or critical level faults see the Group Administration manual 2 Fault Amber On Fault detected OFF OK Blinks briefly when p...

Page 37: ...ower Supply and Cooling Module Installing a Power Supply and Cooling Module 1 Hold the power supply module so that the orange release latch is on the upper left 2 Slide the power supply and cooling module into the chassis until it is fully seated and the release latch clicks into place See Figure 23 Note Before the power cable is connected the fans start spinning powered by the other power supply ...

Page 38: ...ke sure the power switch is in the OFF position 4 Connect the power cable to the power supply and cooling module and plug the cable into a power outlet Note The AC LED lights up when the AC power cable is connected even if the switches on the power supply are off 5 Secure the power cable using the hook and loop fastener strap See Figure 24 ...

Page 39: ...PS4100 Hardware Maintenance Guide Maintaining Power Supply and Cooling Modules 33 Figure 24 Securing the Power Cable 6 Turn on the switches on the power supply and cooling module ...

Page 40: ...PS4100 Hardware Maintenance Guide Maintaining Power Supply and Cooling Modules 34 ...

Page 41: ...ephone based support and service options Availability varies by country and product and some services might not be available in your area For customers in the United States call 800 945 3355 Note If you do not have access to an Internet connection contact information is printed on your invoice packing slip bill or Dell product catalog Use the following procedure to contact Dell for sales technical...

Page 42: ...rt link status LED and the control module status LED are solid green for each port that is connected to a cable If the LEDs are not solid green see Control Module Features on page 17 2 Make sure that all the cables are attached correctly If the problem is not resolved see Obtaining Technical Support and Customer Service on page 35 Troubleshooting External Connections Verify that the cables are con...

Page 43: ... Empty drive bays no drive or drive blank Ambient temperature is too high See the Technical Specifications for the array in the Installation and Setup Guide External airflow is obstructed The power supply and cooling module is removed or has failed See Troubleshooting Power Supply and Cooling Modules on page 36 If the problem is not resolved see Obtaining Technical Support and Customer Service on ...

Page 44: ...efore removing the faulty drive from the array 1 Remove the drive from the array See Identifying Failed Drives on page 7 2 Check the drive to make sure that the connectors are not damaged 3 Reinstall the drive 4 Verify that the control module port link status LED and the control module status LED are solid green for each port that is connected to a cable If the LEDs are not solid green see Interpr...

Page 45: ...20 handling requirements 20 installing in array 23 LEDs 18 locating 19 removing from array 22 restriction on mixing 23 restrictions 17 supported disk type 23 synchronizing 20 22 types 23 verifying operational status 24 cooling removing 30 disks failure behavior 8 failure indications 7 handling requirements 9 LEDs 7 locating 7 protecting 9 verifying operational status 12 14 electrostatic discharge ...

Page 46: ...s 18 microSD card firmware requirements 20 inserting 26 removing 25 replacing 20 network failure protection 20 network interfaces LEDs 18 power indicators 3 power supplies removing 30 PS Series array protecting from discharge 1 recommended tools 1 removing 3 5 inch drive 10 12 drive blank 15 requirements control modules 20 cooling 30 disks 9 firmware 20 power 30 safety 35 shutting down an array 5 ...

Page 47: ...PS4100 Hardware Maintenance Guide Index 41 loss of communication 36 power supply cooling fan module 36 startup failure 36 ...

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