HP 5300 - Manual (Page 118)

HP Smart Array 5300 Controller User Guide E-1
HP CONFIDENTIAL
Writer: Jennifer Hayward File Name: o-appe hard drive installation and replacement
Codename: SilverHammer Part Number: 135606-005 Last Saved On: 10/8/02 11:22 AM
E
Hard Drive Installation and Replacement
Each SCSI channel on the controller supports up to 14 drives. Drives can be of the
Wide Ultra3 or Wide Ultra2 type.
Each drive on a SCSI bus must have a unique ID value in the range 0 to 15 (except
ID 7, which is reserved for controller use). This value is set automatically on hot-
pluggable drives in ProLiant servers and storage systems, but values for other drives
must be set manually.
• Do not terminate the drives. HP and Compaq branded servers and internal
cabling provide the required termination of the SCSI bus.
• Do not use drives of different capacity in the same array. The excess capacity of
larger drives cannot be used by the array and is wasted.
• Do not use hot-pluggable drives on the same SCSI bus as non-hot-pluggable
drives.
Hard drives that are currently supported by Smart Array controllers are listed at
www.hp.com/products/smartarray .
General Information About Hard Drive Failure
When a hard drive fails, all logical drives that are in the same array will be affected.
Each logical drive in an array may be using a different fault-tolerance method, so
each logical drive can be affected differently.
• RAID 0 configurations cannot tolerate drive failure. If any physical drive in the
array fails, all non-fault-tolerant (RAID 0) logical drives in the same array will
also fail.