User`s guide

Under normal operation, the amber LEDs indicate the state of the respective
SCSI–2 buses. When the devices on the buses are functioning correctly, the
amber LEDs will not be lit or flashing.
Pressing one of the port buttons at this time will light its corresponding amber
LED and quiesce its SCSI–2 port. A port must be quiesced to remove or warm
swap a device on the SCSI–2 bus for that port. For further information regarding
StorageWorks building block (SBB) warm swaps, see the StorageWorks Array
Controllers HS Family of Array Controller Service Manual.
4.4.3 HSZ40 Fault Notification
The OCP LEDs display information when the HS controller encounters a problem
with a device configuration, a device, or the controller itself.
For definitions of error codes, see the StorageWorks Array Controllers HS Family
of Array Controller Service Manual.
4.5 Storage Device SBB LEDs and Fault Notification
The storage device SBBs come in either a 3½-inch or a 5¼-inch as shown in
Figures 4–4 and 4–5 respectively. Each storage SBB has two LEDs that display
the SBB’s status. These LEDs have three states: on, off, and flashing.
• The upper (green) LED 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 (amber) LED is the Device Fault LED and indicates an error
condition or configuration problem when it is either on or flashing.
4–6 Error Analysis and Fault Isolation