HP StorageWorks XP1024 - Disk Array Owner's Manual page 50

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The disk array has the following major hardware components:
• One disk control frame (DKC)
The single disk control frame cabinet contains the control panel,
connection hardware, the service processor, and control boards for the
disk arrays.
• One to four XP1024 disk array frames (DKU) or
• One to two XP1024 disk array frames and one to three XP512 DKU
frames.
The DKU cabinets contain your disk drives.
When using only XP1024 DKUs, you can connect up to 4 DKUs.
When connecting XP512 DKUs to the XP1024 disk array, the
supported configuration is a maximum of 2 XP12024 DKUS on the
right, and a maximum of 3 XP512 DKUs on the left.
Warning
XP1024 and XP512 DKUs may not be configured on the same side of the
DKC. Only XP1024 DKUs may be installed on the right of the DKC and
only XP512 DKUs may be installed on the left of the DKC in
configurations that support both types of DKUs.
• One service processor (SVP)
The SVP is an internally mounted notebook computer used for
maintenance. The SVP is located in the disk control frame cabinet.
The SVP is used by your HP service representative only.
• ( Optional ) second service processor
This is available for users with extreme availability requirements. This
is not a required feature.
HP StorageWorks Disk Arrays XP128/XP1024 Owner's Guide