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theoritcal (?) RAID question

Fullmetal Chocobo

Fullmetal Chocobo

Moderator<br>Distributed Computing
Moderator
If I have a server tower with two power supplies, and one is powering the mobo and other essential equipment (CD-RW, boot hd, etc), and I have say 10 hard drives running off of the other power supply with various RAID array types (RAID 0 and JBOD mostly), if I kill power to the power supply running the extra (non-essential) RAID arrays, and the computer boots and says that the hard drives have been lost, and then I turn off the computer, turn on the other power supply, will the computer boot normally, or will the data on the RAID arrays be lost due to the RAID controller saying that the array had been lost? Just wondering, as I'm about to be working on a server, and I might try to do that with the power supply if it doesn't kill the arrays to save on electricity and heat when the extra hard drives aren't required.
Thanks in advance,
IC2 (SW) Sander.
 
Not sure, but I removed to SATA drives that were in a Raid 0 off of the ICH5R. I just put them back in and they worked just fine with all of the partitions.
 
Murphy's Law: if it can go wrong, it will go wrong. If you think that doing something might mess up something, don't do it. Besides, who's going to come power up the psu that's powering the 10 hd's when they are needed?😕
 
I will. This isn't a business machine at the office. This is my home computer. If I need the hard drives, turn off the computer, flip the switch to turn on the other power supply, and start up the computer. I just don't know if I like the idea of having a 660w and a 460w power supply on all the time...
--IC2 (SW)
 
Oh, if it's power that you're worried about, the supplies don't draw peak (rated *cough* *cough*) power all the time. Leave 'em all on, just set Windows (or BIOS) to spin down the drives after a period of inactivity. I tihnk Hard drives draw something like 20 watts each while spinning.

Someone check me if I'm wrong.
 
Idle wattage for a fluid-bearing Seagate ATA drive is about 7 watts, which isn't too bad. As for the question about shutting down the array, what I'd do is to have the whole thing hosted by a second computer and shut the whole computer down when you don't want it. If the data is valuable to you, then you don't want to go tempting fate by turning off the array mid-write. I can only assume that a person with that many hard drives doesn't want to lose all his data merely to save a few dollars a month on electricity.
 
Aaaaahhhhhhhh Mech, good idea!

I'll bet you could score an el-cheapo mobo/server tower/psu etc off of ebay or else Frankenstien one together from old parts, maybe put gigabit LAN cards on them for speed.
 
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