Continuous Data Availability - HP StorageWorks XP1024 - Disk Array Owner's Manual

Continuous data availability

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The HP StorageWorks Disk Array XP family are the first RAID disk arrays
to provide truly continuous data availability. They are designed for nonstop
operation and continuous access to all user data.
HP StorageWorks Disk Array XP128 and XP1024 disk arrays have no
single point of component failure, which enables uninterrupted access to
data.
The disk array has component and function redundancy, providing full fault
tolerance for disk array microprocessors, control storage, control and data
buses, power supplies, and cooling fans. The disk array can sustain multiple
component failures and still continue to provide full access to your stored
data.
While access to your data is never compromised, the failure of a key
component can cause a temporary reduction in disk array performance.
HP StorageWorks Disk Arrays XP128/XP1024 Owner's Guide