SCSI Performance issues

Many systems you'll buy that come with Windows NT installed at the factory also come with SCSI drives. You may find that these drives give very slow uncached performance ratings on many low-level tests because their on-board write buffering is turned off by default. Your first thought might be to turn on write caching, hoping for some improvement. However, most experts agree that you don't need to do this because cached performance doesn't suffer from the default settings. If you still insist on turning the buffering on, you can do so using a SCSI utility from your SCSI adapter's manufacturer such as Adaptecs Easi SCSI. But be aware that if you do, you'll have less data security, because write completion will be signaled before the data is committed to the disk surface.

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