Date: Thu, 26 Jun 2008 14:19:41 -0400 From: Bill Moran <wmoran@potentialtech.com> To: prad <prad@towardsfreedom.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: to scsi or not to scsi Message-ID: <20080626141941.b0000445.wmoran@potentialtech.com> In-Reply-To: <20080626092558.1a17d7d2@gom.home> References: <20080626092558.1a17d7d2@gom.home>
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In response to prad <prad@towardsfreedom.com>: > i've heard scsi hard drives are really good. > i've also seen at least one site which claims that ide easily > outperform scsi. > > for the server we got (dual P3 1GHz 2M which will use raid), is one > preferable over the other? and what about sata? There was a time when SCSI drives were unarguably higher quality than IDE drives. It's unclear whether or not that's true anymore. It seems as if even the lower quality drives have enough lifespan that they live longer than anyone cares to keep them. Also, SATA seems to be positioning itself as high quality too. Anyone who really cares about their data makes good backups and has RAID for redundancy. Whether or not they go with SCSI or SATA seems to be a matter of personal preference any more. If you're worried about performance, you have to look at each drive individually. Look at seek times and throughput and so forth. keep in mind that the published speeds are usually the _interface_ speed, and there's no guarantee that the drive itself can actually read/write data at that speed. You also have to consider the interface. If you need a high-performance RAID controller with battery-backed cache, it might only be available for SCSI. -- Bill Moran http://www.potentialtech.com
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