User`s guide

StorageWorks Status Reporting
2.3 Storage SBB Status
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
2–10 StorageWorks Status Reporting