Locked HGST drives: Difference between revisions

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Locked HGST drives (view source)

Revision as of 02:18, 29 November 2024

74 bytes removed ,  29 November 2024
520-byte sector changes
m (Mediawiki settings)
(520-byte sector changes)
 
This is a very common problem with decommissioned enterprise SAS drives and also typically very easy to fix.
 
All you need is a "true" HBA in the server that is reformatting the disks. Dell PERC cards and HP Smart Array controllers cannot communicate with 520-byte sector disks whatsoever, even when put into "HBA mode".
 
Dell PERC cards and HP Smart Array controllers cannot communicate with 520-byte sector disks whatsoever, even when put into "HBA mode".
The cards inside the [[Servers|Kurisu and Okabe]] servers have been flashed with the "IT mode" firmware, as their PERC cards were old enough to be flashed using [https://fohdeesha.com/docs/perc.html a script]).▼
 
▲The cards inside the [[Servers|Kurisu and Okabe]] servers have been flashed with the "IT mode" firmware, as their PERC cards were old enough to be flashed using [https://fohdeesha.com/docs/perc.html a script]).
 
The sector size of a disk can be reformatted to 512 bytes using <code>sg3utils</code> with the command below:
<code>sg_format -v --format --size=512 --six /dev/sgX</code>
 
Of note, formattingneeding to format with the ten-byte variant of <code>MODE SENSE</code>+<code>MODE SELECT</code> (the default) versus the six-byte variant (toggled with <code>--six</code>) will depend on what brand of disk you're using.
 
* Netapp needs ten-byte
* NetappOur needs ten-byte, while ourHGST drives should need six-byte (based on a comment from someone in a ServeTheHome thread, find the link for this)
* We probably won't know for sure until we unlock the firmware ourselves though.
 
== Problem 2: (Hitachi VSP firmware) ==
Retrieved from "https://lug.mtu.edu/wiki/Special:MobileDiff/7722"

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