30 May
2006
30 May
'06
3:27 p.m.
Jules Richardson wrote:
Don Y wrote:
That's the advantage of just adding a jumper between the
sense input from PSU #1 (installed) and PSU #2 (removed)...
it tricks the alram circuitry into thinking both PSU's
are good without interfering with the reporting of any other
alarms.
If PSU #1 dies, then reporting an alarm is a moot point...
since the entire array will be dead (given that PSU #2
does not exist!)
When / if this power supply dies, there is NO
backup supply
for it. So, what does it matter if the alarm cant sound
when this (only!) supply fails? :>
Depends on whether there are other alarm conditions, I suppose -
critical over-temperature or somesuch. I don't think the later A3000's have an alarm
- at least none went off
when one of the supplies in one of ours went bang and threw out smoke.
Knowing Sun it's software-configurable and someone had previously
switched it off :-)