Ultra320 I/O Module - HP MSA 30 User Manual

Ultra320 I/O Module

Figure 1-3: Ultra320 I/O modules
Item Description
1 Release latch
2 SCSI bus A connector, dual-port module
3 Status LEDs, with Ultra320 designator
4 SCSI bus B connector, dual-port module
5 SCSI bus A connector, single-port module
An I/O module supports up to 14 drives. With a dual-port module, these drives must
be shared between the two ports, so up to seven devices can be connected to each bus
in this case. Each bus requires its own host controller.
The I/O module has an internal sensor that provides protection from power surges. If
the current is too high, power to the module is discontinued. The module is then
disabled until the sensor detects that the current has returned to normal.
NOTE: The system must have both an Ultra320 I/O Module and an Ultra320 EMU for data
transfer rates to achieve Ultra320 speeds. The firmware on the hard drives must be upgraded
to ensure that the drives can also operate at Ultra320 speed.
HP StorageWorks Modular Smart Array 30 User Guide
System and Components
1-3