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Re: [PERFORM] Arguments Pro/Contra Software Raid

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Joshua D. Drake wrote:
> Vivek Khera wrote:
> > 
> > On May 9, 2006, at 11:51 AM, Joshua D. Drake wrote:
> > 
> >> Sorry that is an extremely misleading statement. SATA RAID is 
> >> perfectly acceptable if you have a hardware raid controller with a 
> >> battery backup controller.
> >>
> >> And dollar for dollar, SCSI will NOT be faster nor have the hard drive 
> >> capacity that you will get with SATA.
> > 
> > Does this hold true still under heavy concurrent-write loads?  I'm 
> > preparing yet another big DB server and if SATA is a better option, I'm 
> > all (elephant) ears.
> 
> I didn't say better :). If you can afford, SCSI is the way to go. 
> However SATA with a good controller (I am fond of the LSI 150 series) 
> can provide some great performance.

Basically, you can get away with cheaper hardware, but it usually
doesn't have the reliability/performance of more expensive options.

You want an in-depth comparison of how a server disk drive is internally
better than a desktop drive:

	http://www.seagate.com/content/docs/pdf/whitepaper/D2c_More_than_Interface_ATA_vs_SCSI_042003.pdf

-- 
  Bruce Momjian   http://candle.pha.pa.us
  EnterpriseDB    http://www.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +


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