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StorageWorks SCSI Buses

5.1 Assigning Device Addresses

Figure 5–2 SBB Device Address Switches

3 1/2"

TAPE DRIVE

SBB

5 1/4" SBB

OFF ON

CXO-3630A-MC_R

LOWER DEVICE

ADDRESS SWITCH

UPPER DEVICE

ADDRESS SWITCH

UPPER DEVICE

LOWER DEVICE

DEVICE

ADDRESS

SWITCH

• To use the default shelf device address, set the switches to the automatic

setting as shown in Table 5–1.

• The maximum number of device addresses per SCSI bus or StorageWorks

SBB shelf is seven.

• The SBB device address for 3½-inch disk SBBs is determined automatically

by its physical location in the shelf.

• When there is no address switch or the switch is set to automatic, the shelf

backplane connector determines the SCSI device address. For example,

– If the SBB is in slot 5, the device address is 5.

– If the SBB is in slot 3, the device address is 3.

StorageWorks SCSI Buses 5–3

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 73 74

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Digital Equipment Corporation Storage Works Guide de l'utilisateur Page 45