Dual Bus Conversion - Compaq ProLiant Storage System U1 User Manual

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1-16 Introduction to the ProLiant Storage System /U

Dual Bus Conversion

The Dual Bus Conversion option is offered for customers who find that their
Model U1 storage system now requires two SCSI buses. Dual Bus refers to
dividing the total storage space in the ProLiant Storage System Model U1 into
two separate storage areas, each with its own SCSI bus. This may be used:
as part of a fault-tolerant configuration (controller duplexing).
to make maximum use of the available storage space with up to
12 drives instead of 7 with a single SCSI bus.
as separate storage areas for two servers.
This option effectively converts the ProLiant Storage System Model U1 into a
Model U2. The available storage space is split into two Wide-Ultra SCSI-3
buses with four 1.6-inch drives or six 1-inch drives on each bus. Each bus is
totally independent and requires a separate Fast-Wide SCSI-2 or Wide-Ultra
SCSI-3 controller and cable. Dual Bus Conversion option cannot be used with
the Recovery Server option.
The Dual Bus Option can be installed by the user by replacing the Single Bus
I/O Board with the Dual Bus I/O Board and replacing the Single Bus drive cage
with a Dual Bus drive cage. See Chapter 5, "Installing Options" for more
information on installing and using this option.
Compaq ProLiant Storage System /U User Guide