Posted July 2009
This document is for system administrators who have access to both the search appliance hardware and the search appliance administrative software. For more information on troubleshooting issues with the search appliance, processing unit, or storage unit, see the Troubleshooting Guide.
Use this document to diagnose and replace a failed hard disk drive in Google Search Appliance models GB-7007 and GB-9009:
Note: The hard disk drives in the GB-7007 are replaceable if the Appliance ID starts with T2.
View the Appliance ID from the Admin Console About page. The Appliance ID also appears on labels on the search appliance chassis.
Replacing a hard disk drive consists of:
The hard disk drives in the search appliance, processing unit, and storage unit are hot-swappable and operate in a RAID (redundant array of independent (or inexpensive) disks) disk array so that data is stored across more than one disk drive. RAID is a virtual collection of two or more disk drives that enables fault tolerance and performance.
Diagnose and replace a hard disk drive from the front of the search appliance, processing unit, or storage unit while the device is in its rack and running. No tools are required to replace a hard disk drive. Exercise caution when working around powered devices to prevent injury to you or damage to the equipment.
Dispose of the failed hard disk drive at your site in accordance with your security policy.
Note: Replacing a hard disk drive can be completed within 15 minutes, however, the hard disk drive takes about five minutes to come online, and several hours for the RAID controller to rebuild the data on the new disk drive.
You can verify the current state of RAID hard disk drives from either the Admin Console or from the front of the search appliance, processing unit, or storage unit after you remove the front bezel panel. If you see a RAID hard disk drive failure, contact Google Customer Support.
This section consists of the following topics:
You can view the RAID hard disk drive status on the Admin Console Status and Reports > System Status page.
The GB-9009 Google Search Appliance comes with a key that you can use to remove the front bezel of the processing unit or storage unit. After removing the bezel, you can find the failed drive that has a status indicator light that is blinking amber, or you can get additional information from the LCD display on the front of the processing unit. See Checking Status After Opening the Bezel for the location of the drive status indicator light on a hard disk drive.
If you have a GB-7007 search appliance, you need to first contact Google Customer Support so that they can authorize sending you a replacement hard disk drive and a bezel key before you can identify which hard disk drive in the search appliance failed.
The following table lists the meaning of the RAID indicator in the System Status page of the Admin Console.
Note: In the RAID Message column in the following table, controller 0 refers to the GB-7007 search appliance or GB-9009 processing unit, controller 1 refers to the storage unit.
| RAID Indicator | RAID Message | Description | Device |
|---|---|---|---|
| Green | None | RAID hard disk drives are working correctly. | GB-7007 search appliance, GB-9009 processing unit, or GB-9009 storage unit |
| Green | A warning message | A RAID hard disk drive on the device is in good health with some minor recoverable errors. Contact Google Customer Support. | GB-7007 search appliance, GB-9009 processing unit, or GB-9009 storage unit |
| Yellow | Caution |
One or more RAID hard disk drives are rebuilding. The search appliance or processing unit are functioning normally. It is not necessary to report this status. | GB-7007 search appliance or GB-9009 processing unit |
| Yellow | Caution, No hotspare left on controller 1 |
A hard disk drive on the storage unit failed and the hot spare hard disk was activated. Locate the failed drive and contact Google Customer Support. | GB-9009 storage unit |
| Red | Critical, raidctrl1-drive n Offline(unit n), 1 > drive(s) down in array n on controller 1, No hotspare left on controller 1 |
A hard disk drive on the storage unit failed while the hot spare hard disk was already in use. Locate the failed drive and contact Google Customer Support. | GB-9009 storage unit |
| Red | Drive n offline (unit 0) one drive down in array n |
A hard disk drive on the GB-7007 search appliance or GB-9009 processing unit failed. Contact Google Customer Support. | GB-7007 search appliance or GB-9009 processing unit |
The following table lists the drive status indicator light conditions for the GB-7007 search appliance, GB-9009 processing unit, and the GB-9009 storage unit.
| Indicator Light | Condition | Description |
|---|---|---|
| Amber | Flashing amber eight times per second. | The disk drive failed. |
| Green | Steady green. | The disk drive is online. |
| Green | Flashes green four times per second. | Drive is being identified by the RAID controller or is being prepared for removal. |
| Green | Flashes green slowly--on 400 milliseconds, then off. | RAID controller is rebuilding data on the new disk drive. |
| Green/Amber Flashing | Flashes green, amber, and off. Green: 500 milliseconds, Amber: 500 milliseconds, Off: 1 second | Predicted failure reported by the RAID controller. |
| Green/Amber Flashing | Flashes green, amber, and off. Green: 3 seconds, Off: 3 seconds, Amber: 3 seconds, Off: 3 seconds | Drive spinning down, non-failure condition. |
| Off | Off | The disk drive compartment is empty, the disk drive has not yet been discovered by the server, or the disk drive is an unsupported drive type. |
Note: While locating a hard disk drive failure on the GB-9009, you can perform an additional system check by opening the bezel on the storage unit and checking the operating condition of the storage unit from the three LEDs in a vertical column to the left of the hard disk drives. If the first (top) LED is flashing amber, the storage unit is in a fault state. Contact Google Customer Support.
The front bezel key hole is located on the left side of the front bezel.
To open the front bezel panel and determine which hard disk drive failed:
The GB-7007 search appliance and the GB-9009 processing unit have an LCD panel that turns amber during a drive failure and lists which drive failed. For more information, see Checking Status From a Device.
The following illustration shows the location of the hard disk drive status indicator light that blinks amber when a disk drive fails.
Note: If the search appliance, processing unit, or storage unit has just been powered on, the status indicator lights do not display until all hard drives are initialized. If the indicator lights are off, do not remove a hard disk drive until after the indicator lights are back on.
On the GB-7007 search appliance or GB-9009 processing unit, the drives are numbered as follows--note that the drives are not labeled:
0 2 4 1 3 5
The GB-9009 storage unit does not have an LCD--just look for a flashing amber drive status indicator light. The disk drives in the storage unit are numbered from zero starting at the left.
The part IDs for the hard disk drive replacement items from Google are as follows:
| Google Part Number | Description |
|---|---|
| 07013752 | GB-7007 search appliance hard disk drive |
| 07013751 | GB-9009 processing unit hard disk drive |
| 07013750 | GB-9009 storage unit hard disk drive |
If you see a RAID failure in the Admin Console, contact Google Customer Support to verify the problem and determine whether to authorize that a replacement hard disk drive be sent to you. If remote access is available to the search appliance, Customer Support can verify the drive state and may be able to get a failed disk drive back on line.
You can contact Customer Support at http://www.google.com/support/enterprise/go/support_info#gsamini. To log into the Google Enterprise Technical Support web site, use the name and password included in the email sent to your primary contact who placed your order.
After you remove a failed hard disk drive, dispose of the failed hard disk drive at your site in accordance with your security policy.
This section consists of the following topics:
The following illustration shows a hard disk drive on a GB-7007 search appliance or GB-9009 processing unit:
To replace a failed hard disk drive:
Proceed to Verifying that the New Hard Disk Drive Works.
The following illustration shows a hard disk drive on a GB-9009 storage unit:
To replace a failed hard disk drive in the storage unit:
Note: Push the top of the drive face, not the drive carrier handle when sliding the drive into the compartment. Make sure that the drive is pushed all the way in and that the handle moves upward toward the locked position.
To verify that the RAID hard disk drive is rebuilding:
Once the status indicator light is steady green, proceed to the next section to close the bezel.
As described in Step 4 of Verifying that the New Hard Disk Drive Works, the new hard disk drive requires several hours to rebuild. You may wish to wait on closing the bezel until the status indicator light is steady green.
To close the bezel:
|
