I've been having problems with my online drive storage chassis dropping off line from SanMP. I restart SanMP software and the drives pop back up. It is looking like the UPS an APC SmartUPS 1500 may be causing this. The replace battery is lit. The strange thing is the battery charge LEDs are showing full charge. I realize batteries are fickle at best and that a full charge indication may not be at all representative of the ups's actual battery capacity.
The load on the unit is right in the middle. I read in the manual that the UPS with default factory settings will self test every two weeks and if the battery doesn't handle the test the replace battery indicator goes on. This indicator is on and it seems around 11AM every day we are hearing the ups start beeping. I also read that in cases of low line voltage the ups will revert to battery. I'm wondering two things. I think the replace battery indicator trumps the LEDs that indicate a fully charged battery so I think the place to start is replace the batteries or the unit itself, fry's has replacements I've used at home. The second thing is are we getting low line voltage that is triggering the unit to go on battery and given the battery is iffy it is whacking the hell out of the power to my online drive chassis which is causing the volumes to temporarily drop off the SanMP. Does anybody know how low and or how long the power source would have to dip before the UPS tries to go to battery?
A little bird on my shoulder is also wondering if this possible scenario could be behind the hum that I've seen on my black reference feed. Could we be getting slight brown out condition, low line voltage, and is that triggering the 60 Hz hum I see pop onto my bays sync signal, ntsc black from a Gen 10? I don't think the Gen 10 is powered by the same ups that the online drives are on but they are all in the 4 racks in the machine room and perhaps if it is low line voltage that somehow exacerbates some ground loop issues to the point of smacking my ntsc black source, which in turn temporarily glitches my Avid output when I'm on external sync. It would be too simple for the ups battery replacement to fix all this wouldn't it? Oh well I can dream.
John Moore
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net
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Posted by: John Moore <bigfish@pacbell.net>
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