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

Introducing the UltraSCSI RAID Enclosure
1–10 UltraSCSI RAID Enclosure
Note
DS–HSx70 series array controllers require DS–HSx70
series cache modules to operate properly; likewise,
DS–HSx80 series array controllers require DS–HSx80
series cache modules.
Cache Module
A storage buffer that is required to support bus controller
1
operations.
ECB
The ECB provides backup power to the cache module to protect data
integrity if there is a power failure.
Enclosure Status
When any of the multiple error detection circuits determine there is a
problem, an audible alarm can sound and one or more sets of status
LEDs
(
light emitting diodes
) display an error code.
The enclosure has two LED indicators (see Figure 1–4). The green
LED is the System OK LED; the amber LED is the Fault LED. When
the Fault LED is O
N, check the other status LEDs to determine the
cause of the error.
• For an enclosure in a
pedestal
, these LEDs are part of the
pedestal (see Figure 1–5).
• For an enclosure in a DS–SW600 series cabinet, the LEDs on the
cabinet door also display the enclosure status.
1. The cache module located in the cache A slot only supports the
array controller located in the controller A slot; likewise for cache
module B and controller B.