[Gllug] Computer shopping

Henrik Morsing henrik at morsing.cc
Mon Jul 28 12:09:20 UTC 2003



> IDE drives have now reached 10,000 RPM spindle speeds while SCSI has both
> 10k and 15k for it's high end drives.  I personally prefer IDE, especially
> if you get a good RAID card and IDE Drive cage that supports Hot Swapping.
> The 3Ware controllers support Hot Spares, Hot Swap, and RAID 0, 1, 5, 10
> and
> JBOD (Just a Bunch Of Disks).  If you buy the drive cage from 3ware then
> you
> get true hot swap support for IDE, even though IDE doesn't support it
> directly.  You have one drive per channel on the controller so get full
> bandwidth per drive.  I do suggest you get a 64 bit PCI bus preferably at
> 66
> Mhz for your server as you will severly limit your RAID performance if you
> go with 32Mbit at 33 Mhz.  Remember that the more spindles per RAID volume
> the faster it is, so 8 100Gb Drives would be faster than 4 200Gb drives.
> Don't forget to make sure your PS will support the load of all these
> drives,
> plus the hot spares (drives plugged in, but not used until a drive in the
> RAID fails, then it will activate it and rebuild the RAID automagically
> using it and you still have full redundancy).

I sorry to continue this discussion but I have plenty of experience to
support my views. Your setup only considers disk performance but my
experience tell me that the more IDE disks you put in a computer (esp.
RAID)  the slower your CPU gets.

Cheers


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