Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA370 Series) User's Guide (EK-BA370-UG. C02, September 1998)

Power Verification and Addressing

UltraSCSI RAID Enclosure 4–7

Setting the Enclosure Address

The PVA SCSI ID switch establishes the SCSI bus address (device

ID) for all disk drive SBBs in the enclosure. Table 4–2 identifies how

to set the PVA SCSI ID switch setting for each enclosure.

The following restrictions apply to establishing an enclosure address:

• The master enclosure address is always 0.

• There is only one master enclosure in any subsystem.

• No two enclosures in a subsystem are allowed to have the same

address.

See Table 4–3 for the Compaq-supported enclosure addresses.

Caution

All devices on the same SCSI bus must have a unique SCSI

bus ID.

To preclude SCSI bus addressing conflicts, Compaq only

supports PVA SCSI ID switch settings of 0, 2, and 3.

If the PVA SCSI ID switch setting is changed for an

enclosure, the controllers must be RESET to recognize the

new setting.

Table 4–2 Setting the Enclosure Configuration

To decrease the configuration number:

Press the upper switch (C

ALLOUT

1) to step the

address down one address at a time (decrement).

To increase the configuration number:

Press the lower switch (C

ALLOUT

2) to step the

address up one address at a time (increment).

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