ATTO Technology Diamond Storage Array VT-Class - Manual (Page 69)

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Monitoring, reporting
temperature warning alarm will report OK during
normal operating conditions.
In an abnormal operating condition, such as
blower failure, under high ambient temperatures
when the Diamond internal midplane temperature
reaches a critical point, the temperature alarm will
report
Warning and activate the audible alarm and
fault LED on the front of the unit. If the internal
midplane temperature were to reach a higher
point, the temperature warming alarm will report
Critical , the Array will be taken off line, and all
disk drive activity will be disabled. When the
ambient temperature decreases to within standard
operating range, the drives will be powered back
on and the host will be allowed to access the data.
Power Supply Monitoring The Diamond-VT
monitors the operation of its power supplies and
blower assemblies every 30 seconds. If the status
changes, the system reports it visually with an
LED and a message in the CLI.
If a power supply or blower fails, the management
system sends a CLI message and turns off the
corresponding power supply LED.
The blower assembly directly adjacent a power
supply must be functioning properly for the power
supply to work properly. If a blower assembly
fails, the power supply will shut down and the
management system will send a CLI message.
The corresponding power supply LED on the
system management card will also turn off.
If a good replacement power supply or blower
assembly is inserted into the array, the
management system will send a CLI message and
the corresponding system management card LED
will go on. It may take up to 30 seconds for the
system to note these changes.
System Fault LED and Error Codes If a serious
hardware or software error occurs in the
Diamond-VT, the System Fault LED will display
a series of flashes or blink codes. Error
information will be reported via the Command
Line Interface if it is operational.
At power up, the green Diamond Array Ready
(RDY) LED turns on after successful completion
of the POST (Power On Self Test) indicating the
array is ready for normal operation.
During operation, the Ready LED will stay lit
even if the amber Fault (FLT) LED lights.
If a serious error occurs in the array, the amber
Fault LED will flash repeatedly in a blink code
pattern:
• an initial series of blinks indicating the system
problem
• a two second pause
• another series of blinks providing more detailed
information for technical personnel.
• a four-second pause
• the blink code sequence will repeat from step 1
until the error is cleared.
In general, any fault will require notification of
Diamond Array technical personnel for resolution
or for further debug instructions. When you report
Exhibit 9.0-1 Typical Diamond-VT operation over a range of external ambient temperatures. Alarms will be
audible, visual, CLI and SES cues as described above.
Temperat
ure
Condition
25°C
blowers OK
25°C
1 blower
fails
32°C
blowers
OK
32°C
1 blower
fails
35°C
blowers
OK
35°C
1 blower
fails
40°C
blowers
OK
40°C
1 blower
fails
Read/Writes normal normal normal normal normal normal normal Array offline
Alarms OK OK OK OK OK WARNING OK CRITICAL
Number of blinks Problem area
1, 2 or 3 processor or memory
4 Fibre Channel interface
5 SCSI interface
7 Fibre Channel connection
8 general internal processing
9 SCSI Enclosure Services