User's Manual

Hard Drive Installation and Replacement
HP Smart Array 641/642 Controller User Guide E-9
HP CONFIDENTIAL
Writer: John Turner File Name: m-appe hard drive installation & replacement
Codename: darkmatter - antimatter Part Number: 309311-001 Last Saved On: 11/7/02 5:07 PM
• Do not remove a second drive from an array until the first failed or missing drive
has been replaced and the rebuild process is complete. (When the rebuild is
complete, the Online LED on the front of the drive stops blinking.)
There are some exceptions:
— In RAID ADG configurations, any two drives in the array can be replaced
simultaneously.
— In RAID 1+0 configurations, any drives that are not mirrored to other
removed or failed drives can be simultaneously replaced offline without data
loss.
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 moving drives, these conditions must be met:
• The move will not result in more than 14 physical drives per channel.
• No more than 32 logical volumes will be configured for a controller.
• No drives are failed or missing.
• The array is in its original configuration with no active spare drives.
• Capacity expansion is not running.
• Controller firmware is the latest version (recommended).
Some additional restrictions must be met when moving an array:
• All drives in the array must be moved at the same time.
• A drive array that is moved from a battery-backed array controller to one that is
not battery-backed can no longer undergo array capacity expansion, logical drive
capacity extension, or migration of RAID level or stripe size.