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XP128 Hardware 29
processor also collects performance data about the disk array for
diagnostic testing and analysis.
To ensure data security, the SVP does not have access to any user data
stored on the disk array.
•(Optional) second service processor
This is available for users with extreme high availability requirements.
This is not a required feature.
• Control panel
The control panel is your view of the disk array. Once the disk array is
powered on and running normally, there are no user operations
required at the control panel, except in the case of a power failure
recovery. The control panel is discussed in further detail on
page 31.
• Hard disk drives
The disk array uses 3.5-inch disk drives, and different disk capacities
are available. Ask your HP service representative about currently
available disk drives or visit the XP128 web site at
http://www.hp.com. Any of the disk drives in the disk array frames can
be replaced without disrupting user activity. The disk array
automatically detects and corrects disk errors.
•(Optional) management station PC
The management station PC is attached to your disk array by a local
area network (LAN) connection. The management station PC runs HP
Command View XP, which, combined with other optional
applications, allows you to monitor and manage disk array operations.
The following figure illustrates how the management station PC and host
connect to the XP128.