Looking for a ST419
jules.richardson99 at gmail.com
Thu Oct 30 07:44:42 CDT 2008
Chuck Guzis wrote:
> On 29 Oct 2008 at 23:23, ethan.dicks at usap.gov wrote:
> There are some exceptions--one of which is the MFM drives used on the
> "baby" models of the DG MV series. Apparently (as nearly as I can
> determine), the controller firmware looks for a specially formatted
> track that contains the drive parameters
So they were LLF'd at the DG plant and the LLF routine never escaped into the
I suppose there are probably a few others around like that, too. Plus lots of
systems using Adaptec ST-SCSI bridges where the first track is reserved for
drive geometry storage (although those can at least be LLFd out in the field
by prodding the bridge board directly)
>--just plonking an off-the-
> shelf drive of the same model number just doesn't work. The other
> exception that comes to mind are drives that have a higher rotation
> speed than the customary 3600 RPM.
I suspect step rate may come into play with a lot of high-end systems, too.
Lesser machines probably expected much less of the disk technology.
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