Digital Equipment Corporation Storage Works Guide de l'utilisateur télécharger pdf (Page 28)

StorageWorks Status Reporting

2.3 Storage SBB Status

StorageWorks shelves monitor the status of the storage SBBs. When a fault

occurs, the fault and the SBB device address (SCSI target ID) are reported to the

controller or host for processing. The SBB internal fault/identity bus controls the

fault (lower) LED.

As shown in Figure 2–5, each storage SBB has two LED indicators that display

the SBB’s status. These LEDs have three states: on, off, and ﬂashing.

• The upper LED (green) is the device activity LED and is on or ﬂashing when

the SBB is active.

CAUTION

Removing a storage SBB when the upper LED is on or ﬂashing can cause

the loss or corruption of data.

• The lower LED (amber) is the storage SBB fault LED and indicates an error

condition, when it is either on or ﬂashing.

Figure 2–5 Storage SBB LEDs

DEVICE

FAULT

(AMBER)

DEVICE

ACTIVITY

(GREEN)

CXO-3671A-PH

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Digital Equipment Corporation Storage Works Guide de l'utilisateur Page 28