This is one of these "Doctor - it hurts when I ..." and the Doctor
says "then don''t do that" stories. Basically I installed a
couple of
1Tb WD Black Caviar drives in a Sun x2200M2 1U server in a ZFS
mirrored boot config - excellent drives - much faster than previous
7,200 RPM drives and the dual controller config and 32Mb cache really
work and allow a lot more IOPS. I am delighted with the
price/performance (around $120 ea at that time) compared with earlier
generations of SATA drives. Highly recommended.
Then, as I''ve done many times in the past, I moved the box to get at
another system which was underneath the x2200 - with the system live
and disks spinning. Did''nt even give it a 2nd thought; done this lots
of times previously without any issues. A week later - "Bad Things"
(TM) started happening with the box - and yes, you''ve guessed it, one
of the terror byte drives was generating errors faster than the price
dial on your local gas pump. A quick look at the logs revealed - that
yes, you''ve guessed it, the drive errors originated when the box was
moved. A zpool scrub generated thousands of errors on the damaged
drive. Now it''s offline. Al is sad. :(
Moral of the story - you could do this (move a box with live disks) in
the days of 300, 400 and 500Gb drives - but not any more with todays
high density terror byte drives. And just FYI for those technocrats
that don''t read disk drive specs - the WD 1Tb drive has 3 platters
(roughly 333Mb each); there is a 500 and 640Gb version of the same
drive family that uses 2 platters of the *same* magnetic data density
- so be very careful with those high density disk drives.
As I said - don''t do this!
Just a heads up - it might just help someone else on the list who has
developed bad habits over the years......
Regards,
--
Al Hopper Logical Approach Inc,Plano,TX al at logical-approach.com
Voice: 972.379.2133 Timezone: US CDT
OpenSolaris Governing Board (OGB) Member - Apr 2005 to Mar 2007
http://www.opensolaris.org/os/community/ogb/ogb_2005-2007/
Thank you. I will spread the word. -- This message posted from opensolaris.org
> yes, you''ve guessed it, the drive errors originated when the box was > moved. A zpool scrub generated thousands of errors on the damaged > drive. Now it''s offline. Al is sad. :([...]> Just a heads up - it might just help someone else on the list who has > developed bad habits over the years......I''ve always felt squeamish when I had to move boxes with spinning disks, or when I had to watch someone else do it. Thanks for justifying my paranoia... and good luck with the replacement drives. Best regards -- Volker -- ------------------------------------------------------------------------ Volker A. Brandt Consulting and Support for Sun Solaris Brandt & Brandt Computer GmbH WWW: http://www.bb-c.de/ Am Wiesenpfad 6, 53340 Meckenheim Email: vab at bb-c.de Handelsregister: Amtsgericht Bonn, HRB 10513 Schuhgr??e: 45 Gesch?ftsf?hrer: Rainer J. H. Brandt und Volker A. Brandt
On Feb 8, 2009, at 09:30, Volker A. Brandt wrote:>> yes, you''ve guessed it, the drive errors originated when the box was >> moved. A zpool scrub generated thousands of errors on the damaged >> drive. Now it''s offline. Al is sad. :( > > [...] > >> Just a heads up - it might just help someone else on the list who has >> developed bad habits over the years...... > > I''ve always felt squeamish when I had to move boxes with spinning > disks, > or when I had to watch someone else do it. Thanks for justifying my > paranoia... and good luck with the replacement drives.You don''t even have to move boxes with spinning disks; as the Fishworks guys have shown, even the "small" vibrations of a shouting voice can affect things: http://www.youtube.com/watch?v=tDacjrSCeq4
You were just lucky before and unlucky now. I had a PC back in like Pentium-133 days go CRASH because I moved it too roughly while the drive was spinning. I moved many PC in my life with drive spinning no problems, but I don''t COUNT on it and avoid it if humanly possible. Don''t people do it all the time with laptops? Makes me cringe a bit when I see people tossing laptop onto desk with a thud while it''s still active. -- This message posted from opensolaris.org
> I''ve always felt squeamish when I had to move boxes with spinning > disks, > or when I had to watch someone else do it. Thanks for justifying my > paranoia... and good luck with the replacement drives.This reminds me of a story. Many years ago a friend of mine had to move some servers from one office to another. There was a SPARCstation 2 running SunOS4 that had an uptime of 3 or 4 years or so. In order to not ruin the uptime, he unplugged the UPS from the wall and hauled the SS2, UPS and some external disk enclosures to his car and drove it to the new office listeing the the UPS scream at him about no AC the whole time. -brian -- "Coding in C is like sending a 3 year old to do groceries. You gotta tell them exactly what you want or you''ll end up with a cupboard full of pop tarts and pancake mix." -- IRC User (http://www.bash.org/?841435)