Marc Nicholas <geekyth...@gmail.com> wrote:

> I think someone was wondering if the large storage vendors have their own
> microcode on drives? I can tell you that NetApp do...and that's one way they
> "lock you in" (if the drive doesn't report NetApp firmware, the filer will
> "reject" the drive) and also how they do tricks like
> soft-failure/re-validation, 520-byte sectors, etc.

Since IBM started to use SCSI drives more than 20 years ago for their 
mainframes, you can format most drives with any sector size. IBM used 800
or 8000 byte sectors (10 or 100 punch cards ;-), but you also may reformat
a drive with 520 bytes per sector.

Jörg

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