Hard Drive Power Drain

[Kunal]

How much power do hard drive's drain?

For example, I'm about to fit four additional hard drives to my machine, and I just want to make sure that it'll run OK.

Currently I'm running the following:

Enermax 350w
XP1900
8045/ 80mm Delta 68CFM
KR7A-RAID
Hercules Prohpet DDR-DVI (32Mb DDR Geforce256)
SB Live! Original
Linksys LNE100TX Network Card
1024mb Crucial PC2100 ECC/Reg (4x256)
HP 8100i CDRW 4x2x24x
DVD 8x
Maxtor D740X ATA133 80Gb 7200RPM
Fans (2x 120mm 120CFM YS-Tech, 2x 92mm YS-Tech, 2x 80mm YS-Tech)

The additional components are:

SCSI Card (Not sure yet, It'll be Adaptec or Tekram U160 Single Channel)
Quantum Atlas 10K 18Gb
Quantum Atlas 10K 18Gb
IBM Titan 7200RPM 10.1Gb
Maxtor 5400RPM 27.7Gb

I've got an old 230w ATX power supply from my P2-450, so if the enermax can't handle the load I'll use the 230w to power the hard drives.

[Monaco]

You should be fine- I ran a similar, Pentium-based system off a meager 250watt PSU with no trouble.

Way I figure it, since you never are reading off all four drives simulteanously, the total power draw will never get too high.

EXCEPT- all yer components will draw their max at startup as they go thru their POST, so I'd imagine if you are going to have problems it will manifest itself by simply not turning on! In that case just start removing stuff until you see what tripped it.

Then again, those are 10K SCSI drives; they ought to draw more juice than a 7200 IDE drive. Hmm hmmm hmmmm... I can't say for sure, but I'm going to bet that it will work fine. Especially sure it will be ok if you don't overclock that power-hungry XP:)

[Diu]

I don't think that will be enough for with a Enermax 350w for your rig.
Get a 400w or even higher.