Greg Freemyer wrote:
On Thu, Feb 14, 2008 at 5:43 PM, jdd
wrote: Carlos E. R. a écrit :
The important thing is the power needed at each of the internal DC lines.
new power units data sheet list max amp for each power line...
That can be part of the problem.
Some newer PSUs have multiple power lanes. Say one lane is designed to drive 2 peripherals, but the unsuspecting user (or PC builder) adds a couple of Y splitters and drives 4 peripherals with it. Can be trouble.
This is why I try to keep my power load evenly distributed across all of my power-lines.
I've got a big tower chassis with 15 drive slots. If I ever filled it up, I would have to really watch how the power was distributed and not just go from one Y connector to the next.
Yep. For a while, my tower had 2 SCSI-2 and 2 LVD SCSI [not quite SCSI-3, as they're only good for 80 MB/sec whereas true SCSI-3 are LVD/160] hard drives, 2 SCSI hard drives, 1 IDE drive, 2 SCSI CD-ROM drives and one IDE CD/DVD+-RW. Load balancing was a pain in the neck, but I never had any electrical problems (1 GHz Athlon + 450W power supply, and two SCSI cards (Adaptec 2940 for the slow SCSI and a 29160 for the SCSI-2 and LVD SCSI)
I've actually been thinking how cool it would be to get a big 3ware card and fill that thing up with 1TB drives. There price has dropped to $240 or so on sale, so for a few $K, I could build a nice 10TB machine!!!!
Kinda Scary. The great machines of my college days, which handled over 100 simultaneous logins, were 30 MHz, 64 MB of memory, and disk drives in the 500MB - 750 MB range. VERY VERY TRIVIAL fact... the first 1 GB disk drive at Purdue University was mounted as /kulkis on el.ecn.purdue.edu.
I'll save that for another thread on another day.
Greg
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