[clug] Samsung HD204UI (2TB F4EG) disk vs smart

Eyal Lebedinsky eyal at eyal.emu.id.au
Wed Feb 16 00:56:55 MST 2011

I should have said that the HD155UI (1.5TB F4EG) (also popular) disks in this
series are affected too (as the provided link says)


On 02/16/11 08:09, Eyal Lebedinsky wrote:
> For the last month I was chasing a problem with my new RAID where a
> large number of mismatches was reported in my weekly scrub.
> I confirmed that I really had some data corruption.
> I managed to not lose critical data but it surely was an uneasy period.
> I commissioned new disks, new controller, and moved from f13 to f14
> around the same time.
> In the end the problem turned out to be the disks. It seems that these
> popular (cheap) disks have a firmware bug that causes bad writes if a
> specific smart command is issued at the right (wrong) time.
> There is a fw fix but I found it not widely advertised. It can be found
> here
> http://www.samsung.com/global/business/hdd/faqView.do?b2b_bbs_msg_id=386
> Unfortunately it does *not* change the fw revision so you will not know
> if your disk has the patch applied or not. I just applied it and so far
> so good. My fw rev was (and still is) 1AQ10001.

Eyal Lebedinsky	(eyal at eyal.emu.id.au)

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