HP StorageWorks 2300 Disk System - Manual (Page 31)

Product Description 31
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For customers with small data storage needs, a single disk system can be
connected to two hosts in a split bus mode. Each host can do reads and writes to a
maximum of seven disk modules. Each BCC can provide disk system status to
the host it is connected to. Each host can operate independently of the other.
System reboots and shutdowns do not need to be coordinated between the hosts.
In a split bus configuration, the two SCSI buses are physically isolated. Problems
on one bus are transparent to the other bus.