HP StorageWorks Disk Arrays XP128/XP1024 Owner's Guide (A7906-96012, July 2005)

XP1024 hardware 55
RAID options
Any of your spare disk drives can back up any other disk drive of the same
or lesser capacity (and equal rotational speed), in any DKU frame, even if
the failed disk and the spare disk are in different array domains, whether
you are using RAID1 or RAID5 array groups.
XP512 DKU Supported disk drives must have a spare drive in the XP512
DKU domain(s).
Your disk arrays can be configured with a minimum of one and a maximum
of 16 spare disk drives.
Device Manager server (optional)
The Device Manager server is for user access to the system software. Your
Device Manager server runs a main remote control application and other
standard and optional software to manage and monitor the disk array. The
Device Manager server can be connected to multiple disk arrays using a
special LAN connection. See Figure 10. See Table 10 on page 56.
Figure 10. XP1024 Disk Array