[rescue] swap 36 gb SCA drive for 72 gb SCA

Sandwich Maker adh at an.bradford.ma.us
Fri Dec 13 17:59:01 CST 2019


" From: Dave McGuire <mcguire at neurotica.com>
" 
" On December 13, 2019 6:23:34 PM Skeezics Boondoggle <skeezicsb at gmail.com>
" wrote:
" > Hitachi 72gb SCA drive issues?  Here's a thought: pop it into another
" > machine and check the block size.
" >
" > I found a batch of Hitachi 72gb DK-somethings on Ebay several years ago
" > that were unexpectedly affordable, but none of them seemed to work (Sun
" > E3500, to be a ZFS testbed).  Then I noticed the block size was wrong --
" > the firmware hinted that they'd been pulled from an EMC and had 520-byte
" > blocks, which the Sun couldn't grok.  It's been ten years or so since this
" > all went down, so I can't recall the details, but I think I put them in a
" > spare NetApp shelf I happened to have laying around, wrote the latest
" > NetApp-supplied firmware on 'em, then reformatted the lot with 512-byte
" > blocks.  The Suns were happy with 'em after that.  (NetApp used to use 520
" > byte "block checksum" format and had no trouble seeing them, and I was
" > pleased to use a NetApp to blow away the EMC firmware. Feh!)
" >
" > That seems like a lot of work, now.  And you might not have a spare NetApp
" > around. But maybe a modern-ish PC with a SCSI card and a half-decent BIOS
" > utility?  It's a theory, anyway. :-)
"   I've done it bunches of times on Suns using scsiutils, I think it was.  (It
" has been awhile.)

joerg schilling's 'sformat' perhaps?  iirc it can fix blocksize
problems plus lots of other things.  now at
https://sourceforge.net/projects/schilytools/files/sformat/
i've used it, long ago, to good effect.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh at an.bradford.ma.us                       and think what none thought


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