Disk Array Frames; Disk Drives; Raid Options - HP StorageWorks XP12000 - Disk Array Owner's Manual

Disk array frames

DKUs are optional cabinets that allow you to expand the disk array's storage capacity.
DKUs contain physical disk drives. The disk array can include up to four DKUs. Four
DKUs fully populated with disk drives provide up to 332 TB of raw storage capacity.

Disk drives

Each DKU can contain up to 256 hard disk drives. The disk array automatically detects
and corrects disk errors, and an HP support representative can replace any of the disk
drives without disrupting user activity.
The disk array must contain at least one spare disk drive and can contain up to 40. Any
of the spare disk drives can back up any other disk drive of equal rotational speed and
equal or lesser capacity, in any DKU, even if the failed disk and the spare disk are in
different array domains.
The XP12000 supports 73 GB, 146 GB, and 300 GB Fibre Channel disk drives. Fibre
Channel drives are intended as a high capacity, high performance storage option for
high priority applications such as OLTP, Oracle, SAP, and Exchange.

RAID options

The disk array supports RAID1 (2D+2D or 4D+4D), RAID5 (3D+1P or 7D+1P), and
RAID6 (6D+2P) array groups. RAID levels may be intermixed.
HP StorageWorks XP12000 Disk Array
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