HP Array Controller HSG V8.7 Software - Manual (Page 32)

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.