Compaq AA-RHGWC-TE manual Scsi Signal Converters, RAID Controller Scsi IDs

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.

2–10Hardware Requirements and Restrictions