Compaq AA-RHGWC-TE - Manual (Page 52)

RAID array controllers require the minimum Array Controller Software
(ACS) shown in Table 2–1.
Table 2–1: RAID Controller Minimum Required Array Controller Software
RAID Controller Minimum Required Array Controller
Software
HSZ20 3.4
HSZ40 3.7
HSZ50 5.7
HSZ70 7.7
HSZ80 8.3-1
HSG60 8.5
HSG80 8.5
RAID controllers can be configured with the number of SCSI IDs as shown
in Table 2–2.
Table 2–2: RAID Controller SCSI IDs
RAID Controller Number of SCSI IDs Supported
HSZ20 4
HSZ40 4
HSZ50 4
HSZ70 8
HSZ80 15
HSG60 N/A
HSG80 N/A
2.6 SCSI Signal Converters
If you are using a standalone storage shelf with a single-ended SCSI
interface in your cluster configuration, you must connect it to a SCSI signal
converter. SCSI signal converters convert wide, differential SCSI to narrow
or wide, single-ended SCSI and vice versa. Some signal converters are
standalone desktop units and some are StorageWorks building blocks (SBBs)
that you install in storage shelves disk slots.
2–10 Hardware Requirements and Restrictions