HP Smart Array (RAID) Host Bus Adapters manual Moving drives and arrays, Adding drives

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3.Repeat the previous step for the other drives in the array, one at a time.

When you have replaced all drives, you can use the extra capacity to either create new logical drives or extend existing logical drives. For more information about these procedures, refer to the HP Array Configuration Utility User Guide.

Moving drives and arrays

You can move drives to other ID positions on the same array controller. You can also move a complete array from one controller to another, even if the controllers are on different servers.

Before you move drives, the following conditions must be met:

•The server must be powered down.

•If moving the drives to a different server, the new server must have enough empty bays to accommodate all the drives simultaneously.

•The array has no failed or missing drives, and no spare drive in the array is acting as a replacement for a failed drive.

•The controller is not running capacity expansion, capacity extension, or RAID or stripe size migration.

•The controller is using the latest firmware version (recommended).

If you want to move an array to another controller, all drives in the array must be moved at the same time. When all the conditions have been met:

1.Back up all data before removing any drives or changing configuration. This step is required if you are moving data-containing drives from a controller that does not have a battery-backed cache.

2.Power down the system.

3.Move the drives.

4.Power up the system. If a 1724 POST message appears, drive positions were changed successfully and the configuration was updated.

If a 1785 (Not Configured) POST message appears:

a.Power down the system immediately to prevent data loss.

b.Return the drives to their original locations.

c.Restore the data from backup, if necessary.

5.Verify the new drive configuration by running ORCA or ACU ("Configuring an array" on page 13).

Adding drives

You can add hard drives to a system at any time, as long as you do not exceed the maximum number of drives that the controller supports. You can then either build a new array from the added drives or use the extra storage capacity to expand the capacity of an existing array.

To perform an array capacity expansion, use ACU. If the system is using hot-pluggable drives, you can expand array capacity without shutting down the operating system (that is, with the server online) if ACU is running in the same environment as the normal server applications. (For more information, refer to the HP Array Configuration Utility User Guide.)

The expansion process is illustrated in the following figure, in which the original array (containing data) is shown with a dashed border and the newly added drives (containing no data) are shown unshaded. The array controller adds the new drives to the array and redistributes the original logical drives over the enlarged array one logical drive at a time. This process liberates some storage capacity on each of the

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Contents October 2006 Second Edition Part Number Audience assumptions Contents Electrostatic discharge Hardware features Controller specificationsMain components on the board This sectionPage Overview of the installation procedure Quick installation procedure Windows or LinuxOverview of the installation procedure Installing the controller board Installing the controller hardwareBefore beginning the installation Preparing the server Connecting external storage Connecting storage devicesConnecting internal storage SAS cable part numbers To order additional cables, use the option kit part numberUpdating the firmware Methods for updating the firmware Windows or LinuxComparing the utilities Configuring an arrayUtilities available for configuring an array Using Orca Select Create Logical DriveUsing ACU Systems using Linux Installing device drivers and Management AgentsSystems using Microsoft Windows A system that already has Linux installed Replacing or adding a battery Upgrading or replacing controller optionsUpgrading or replacing controller options Upgrading or replacing controller options Upgrading or replacing controller options Replacing the cache module or controller Upgrading or replacing controller options Upgrading or replacing controller options Upgrading or replacing controller options Replacing, moving, or adding hard drives Identifying the status of a hard driveRecognizing hard drive failure Terminate the current operation and cause data lossEffects of a hard drive failure Compromised fault toleranceRecovering from compromised fault tolerance Factors to consider before replacing hard drives Automatic data recovery rebuildReplacing hard drives Case 1 An uncorrectable read error has occurred Time required for a rebuildCase 3 Another drive in the array has failed Case 2 The replacement drive has failedUpgrading hard drive capacity Moving drives and arrays Adding drivesReplacing, moving, or adding hard drives Diagnosing array problems Controller board runtime LEDsBattery pack LEDs Diagnostic tools Post messagesGrounding methods to prevent electrostatic discharge Electrostatic dischargePreventing electrostatic discharge Regulatory compliance notices Federal Communications Commission noticeModifications CablesEuropean Union regulatory notice Bsmi notice Japanese class a noticeKorean class a notice Battery replacement notice Taiwan battery recycling noticeAcronyms and abbreviations Smart Array Index Post error messages
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