PS4110 Storage Arrays Hardware Owner's Manual Version 1.
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Table of Contents 1 Basic Storage Array Information Notes, Cautions, and Warnings Recommended Tools Chassis Types Array Features Back-Panel Features and Indicators Shutting Down and Restarting an Array 2 Maintaining Drives About Drive Types Identifying Failed Drives Interpreting Drive LEDs Array Behavior When a Drive Fails Drive Handling Requirements Drive Installation Guidelines and Restrictions 3 Maintaining Control Modules Control Module Features Replacing a Control Module Replacing the MicroSD Card Ad
1 Basic Storage Array Information This chapter includes information about the location and basic operation of the replaceable components in a storage array, tools and equipment you will need, protecting hardware from electrostatic discharge, and power on and off operations. Notes, Cautions, and Warnings A NOTE indicates important information that helps you make better use of your system. A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed.
Hardware Owner's Manual 1 Basic Storage Array Information Protecting Hardware Protect a PS Series array from electrostatic discharge. When handling array hardware, make sure you use an electrostatic wrist strap or a similar form of protection. To use a wrist strap: 1. Connect the steel snap on the coil cord to the stud on the elastic band. See Figure 1. Figure 1: Using an Electrostatic Wrist Strap 2. Fit the band closely around your wrist. 3. Connect the band to ground.
Hardware Owner's Manual 1 Basic Storage Array Information 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 side of the bezel off the right side of the array. 4. Set the bezel aside. Installing the Bezel The steps for installing the bezel are the same for all the array models. 1.
Hardware Owner's Manual 1 Basic Storage Array Information 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) Table 1: Front Panel Feature Descriptions Item Indicator 1 Array status LED 2 Power LED 3 Drive Release Latch Icon Description The array status LED lights when the array power is on. • Off—No power. • Steady blue—Array status is OK.
Hardware Owner's Manual 1 Basic Storage Array Information Back-Panel Features and Indicators The back of a PS4110 is shown in Figure 5. Table 2 describes the back panel features. Figure 5: Back Panel-Features Table 2: Array Back Panel Features Item Feature Identifier Description 1 Power switch None The power switch controls the power supply output to the array. One on each power supply. 2 Power supply unit (PSU) PSU0 (left) Power supply and cooling fan module for array.
Hardware Owner's Manual 1 Basic Storage Array Information • Use telnet or SSH to connect to a functioning IP address assigned to a network interface 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.
2 Maintaining Drives You can replace a failed drive while the array remains running. About Drive Types Depending on your configuration, your array supports up to 24 2.5-inch SAS drives or up to 12 3.5-inch SAS drives in internal drive bays. Drives are connected to a backplane through drive carriers and are hot-swappable. 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 not from Dell Inc.
Hardware Owner's Manual 2 Maintaining Drives Interpreting Drive LEDs The LEDs on a 3.5-inch drive are shown in Figure 6. The LEDs on a 2.5-inch drive are shown in Figure 7. Drive LED states are described in Table 4. Figure 6: LEDs on 3.5-inch Drives Figure 7: LEDs on 2.
Hardware Owner's Manual 2 Maintaining Drives 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 normal after reconstruction completes. • If a spare drive is not available the RAID set will become degraded (except a RAID 6 set).
Hardware Owner's Manual 2 Maintaining Drives Drive Installation Guidelines and Restrictions • Replace a failed drive as soon as possible to provide the highest availability. • Install only drives of the same type, speed, and spin rate in an array. • Make sure the drive is oriented in the correct position for the array model. See Front-Panel Features and Indicators on page 3. • You can use drives of different capacities in the same array.
Hardware Owner's Manual 2 Maintaining Drives Figure 8: Removing a 2.5-Inch Drive Installing a 2.5-inch Drive The 2.5-inch 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 2. 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).
Hardware Owner's Manual 2 Maintaining Drives 4. Push the drive completely into the slot (callout 2). The drive handle will begin to close onto the drive (callout 3). 5. Push in the 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 8. In addition, examine the GUI Member Disks window and the CLI member select show disks command output.
Hardware Owner's Manual 2 Maintaining Drives 2. Press the release button (callout 1 in Figure 10). The drive latch opens and the drive emerges partway from the array (callout 2). 3. Pull the drive out by the handle until it is free 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.
Hardware Owner's Manual 2 Maintaining Drives 3. Hold the drive by the carrier and slide the drive most of the way into a slot (callout 1 in Figure 11). 4. Push the drive completely into the slot (callout 2). The drive handle will begin to close onto the drive (callout 3). 5. Push in the handle until you hear a click (callout 4). Figure 11: 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 8.
Hardware Owner's Manual 2 Maintaining Drives 1. Remove the bezel. See Removing the Bezel on page 3. 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 2 Drive blank Release tab Installing a Drive Blank 1. Remove the bezel. See Removing the Bezel on page 3. 2.
3 Maintaining Control Modules Different PS Series array models contain different control module types. The combination of chassis type, control module pair, and drives determines the PS Series array model number. The control modules in a PS Series array contain the PS Series firmware which provides the Group Manager GUI, the command line interface, and all the array and storage management functions and features.
Hardware Owner's Manual • 3 Maintaining Control Modules A release button and latch to release the control module from the array for replacement. The release lever has a switch that detects activation and prompts the array to save data to non-volatile storage, thereby protecting your data. Caution: Do not mix control module types in an array. Always make sure both control modules are the same type and color. See the latest PS Series Release Notes for information about other supported control modules.
Hardware Owner's Manual 3 Maintaining Control Modules Figure 14: Recommended Network Configuration to Support Vertical Failover Note: If a network port is available for failover on either control module, but is not currently in use, its LEDs will not be lit. Interpreting Control Module LEDs Control modules have the following LEDs: • The Ethernet ports and the Management port each have LEDs that indicate the port's status and activity.
Hardware Owner's Manual 3 Maintaining Control Modules Table 5: Ethernet and Management Port LED Descriptions 10GBASE-T Ethernet LED Location Left (Link) Right (Act) SPF+ Ethernet LED Location Top (Link) Bottom (Act) Management LED Location Left (Link) Right (Act) State Description Off On Off On No power, not connected to network, or passive. Connected to network. No power, not transmitting, or not receiving. Transmitting or receiving.
Hardware Owner's Manual • 3 Maintaining Control Modules Group Manager GUI and CLI output. The Member Controllers window or the member select show controllers command output shows the control module status not installed. When viewed from the rear of the array, CM0 is on the top, and CM1 is on the bottom. See Front-Panel Features and Indicators on page 3. If a control module fails, contact your PS Series support provider for a replacement.
Hardware Owner's Manual 3 Maintaining Control Modules Caution: In a dual control module array, both control modules must be running the same firmware version; other- wise, only one control module will be functional. When you update the array firmware, both control 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.
Hardware Owner's Manual 3 Maintaining Control Modules Figure 16: Standby Button Location Enabling the Standby Feature To use the standby button, a group administrator must enable the feature in the Group Manager GUI or CLI. Enabling the use of the button applies group-wide; that is, it allows you to press the button to shut down any member (array) that has the button (currently PS4100, PS4110, PS6100, and PS6110 array models only). You do not need to enable use of the button on each member separately.
Hardware Owner's Manual 3 Maintaining Control Modules Important Considerations Use this button only in when you must shut down a member fast, in situations where you do not have access to the Group Manager GUI or CLI. Caution: In standby mode, any volumes that use space on that member or that are bound to that member become unavailable! All operations on the member are suspended, there is no I/O activity to or from the member, and the member's firmware is not running.
Hardware Owner's Manual 3 Maintaining Control Modules Control Module Replacement Procedures This section describes the procedures for removing and replacing one or both control modules in your PS Series array. The following replacement scenarios are covered: • Replacing the secondary control module in an array. • Replacing the active control module in an array. • Replacing both control modules in an array.
Hardware Owner's Manual 3 Maintaining Control Modules 3. Replace the control module that is now secondary (was active before the restart). (As described in Replacing the Secondary Control Module on page 25.) Replacing Both Control Modules Use the following procedure to replace both control modules in the array: 1. Replace the secondary control module first. (As described in Replacing the Secondary Control Module on page 25.) 2. Use the “restart” command to make the active control module secondary. 3.
Hardware Owner's Manual 3 Maintaining Control Modules Figure 17: Removing a Control Module (2U Array) 3. Place the control module on a flat surface where it will be protected from electrostatic charge. To avoid damage, do not place anything on top of the control module. 4. If you are replacing a failed control module, remove the microSD card from the failed control module and install it in the replacement control module. This will make sure that the new control module is running the correct firmware.
Hardware Owner's Manual 3 Maintaining Control Modules Figure 18: Correct Control Module Orientation To install a control module: 1. Attach an electrostatic wrist strap, or similar protective device. See "Protecting Hardware " on page 2. 2. Push down on the orange release tab (callout 1 in following illustration) and swing the lever (callout 2 in following illustration) out. 3. Slide the control module into the chassis until you feel resistance, as shown in following illustration.
Hardware Owner's Manual 3 Maintaining Control Modules If two control modules are installed in the array, but only one is shown in the GUI (or CLI), make sure that you have allowed enough time (minimum of five minutes) for the two control modules to boot and synchronize. When synchronization completes, a message will appear on the serial console (if connected), and the ACT LED on the secondary module will be orange.
Hardware Owner's Manual 3 Maintaining Control Modules 1. Firmly push the card into its housing to release the spring mechanism (callout 2 in Figure 20). The microSD card will be partially ejected from the housing. 2. Gently pull the card straight out of the housing (callout 3 in Figure 20). 3. Place the microSD card on a flat surface where it will be protected from electrostatic charge. Figure 20: Ejecting the MicroSD Card Inserting the MicroSD Card 1.
Hardware Owner's Manual 3 Maintaining Control Modules Figure 21: Inserting the MicroSD Card 3. Install the control module in the array. See Installing a Control Module on page 27. 4. Make sure the control module is operational. See Interpreting Control Module LEDs on page 19. 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.
Hardware Owner's Manual 3 Maintaining Control Modules Note: 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. The location of the management port is shown in the following figure.
4 Maintaining Power Supply and Cooling Modules The array can support two hot-swappable power supply and cooling modules. The array can operate only temporarily with one module, but both modules must be present for long-term cooling of the array. About Power Supplies The PS Series array receives power from two power supplies (PSUs). Each PSU has a 700W power supply. Each power supply has two cooling fans.
Hardware Owner's Manual 4 Maintaining Power Supply and Cooling Modules Figure 23: 700W Power Supply LEDs Table 7: Power Supply LED Descriptions Item LED Color State ON—Normal operation. Power supply is connected to AC power and the power switch is on. The power supply module is supplying DC power to the array.
Hardware Owner's Manual 4 Maintaining Power Supply and Cooling Modules Removing a Power Supply and Cooling Module If a power supply and cooling module fails, you must replace the module as soon as possible, although an array can operate with only one working module. For proper array cooling, do not remove a failed module until you are ready to replace it.
Hardware Owner's Manual 4 Maintaining Power Supply and Cooling Modules Figure 24: Removing a Power Supply and Cooling Module Installing a Power Supply and Cooling Module To install a power supply and cooling module, use the following steps and illustrations: 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, as illustrated below.
Hardware Owner's Manual 4 Maintaining Power Supply and Cooling Modules Figure 25: Inserting a Power Supply and Cooling Module 3. Make 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, as shown in the following illustration.
Hardware Owner's Manual 4 Maintaining Power Supply and Cooling Modules Figure 26: Securing the Power Cables 38
5 Troubleshooting Your Array Safety First—For You and Your array Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
Hardware Owner's Manual 5 Troubleshooting Your Array Determining Service Tag Information Each array has a service tag with a number. You may need to provide this information to customer support when you contact us. • The service tag label is visible on the front of the array, on the right bezel latch block. Obtaining Component Diagnostics You can collect diagnostic information for one or more members of a PS Series group through the Group Manager GUI or the CLI.
Hardware Owner's Manual 5 Troubleshooting Your Array Troubleshooting External Connections • Verify that the cables are connected to the correct Ethernet and, if applicable, Management ports before troubleshooting any external devices. For the location of the back-panel connectors on your array, see BackPanel Features and Indicators on page 5. • Make sure that the power cables are securely attached to the power supply modules on your array. Troubleshooting Power Supply and Cooling Modules 1.
Hardware Owner's Manual 5 Troubleshooting Your Array • External airflow is obstructed. • The power supply and cooling module is removed or has failed. See Troubleshooting Power Supply and Cooling Modules on page 41. If the problem is not resolved, see Obtaining Technical Support and Customer Service on page 39. Troubleshooting Control Modules 1. Remove the control module and verify that the pins on the backplane and control module are not bent. See Replacing a Control Module on page 24. 2.
Index E A electrostatic discharge, avoiding electrostatic wrist strap, using array control module restriction control modules cooling fans firmware LEDs power supplies shutdown procedure 27 17 33 33 21 8, 19 33 5 2 2 F failover control module 21 failure indications control modules disks 20 7 fans removing PSU B bezel installing removing 35 firmware 3 3 identifying version requirements 22 21 front panel features C I control modules batteries checking proper installation failover behavior fa
Index: power indicators – troubleshooting P 4 power indicators power supplies removing 35 PS Series array protecting from discharge 2 R 1 recommended tools removing 3.
