From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: lrhorer@satx.rr.com
Cc: linux-raid@vger.kernel.org
Subject: Re: Adding a smaller drive
Date: Sun, 28 Jun 2009 17:33:47 -0400 [thread overview]
Message-ID: <yq1eit411s4.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <20090628194705152.ITZI24524@cdptpa-omta02.mail.rr.com> (Leslie Rhorer's message of "Sun, 28 Jun 2009 14:47:00 -0500")
>>>>> "Leslie" == Leslie Rhorer <lrhorer@satx.rr.com> writes:
Leslie> I may have to rethink my position on using raw drives. If I
Leslie> partition the drives, I can make the partition a bit smaller
Leslie> than the whole drive, allowing for the addition of a future
Leslie> drive whose size is a bit off. I hate to waste space, but being
Leslie> stuck with an undersized or limping array is worse.
This is not nearly as big a problem as it used to be. Drive
manufacturers need to adhere to an IDEMA standard which requires them to
use a specific LBA count for each capacity class.
I.e. a 500GB Seagate drive must have exactly the same number of sectors
as a 500GB Western Digital or Hitachi.
The IDEMA LBA standard applies to 3.5" form factor drives over 160GB as
well as 2.5" FF drives over 80 GB.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2009-06-28 21:33 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-28 18:31 Adding a smaller drive Leslie Rhorer
2009-06-28 19:05 ` John Robinson
2009-06-28 19:47 ` Leslie Rhorer
2009-06-28 21:09 ` John Robinson
2009-06-28 21:22 ` Leslie Rhorer
2009-06-28 22:52 ` John Robinson
2009-06-28 23:07 ` John Robinson
2009-06-29 10:05 ` Goswin von Brederlow
2009-07-01 4:16 ` Leslie Rhorer
2009-06-28 21:33 ` Martin K. Petersen [this message]
2009-06-28 21:49 ` Martin K. Petersen
2009-06-28 22:33 ` Mikael Abrahamsson
2009-06-28 22:51 ` Martin K. Petersen
2009-06-28 23:37 ` Mikael Abrahamsson
2009-06-28 23:43 ` Martin K. Petersen
2009-06-28 23:57 ` Mikael Abrahamsson
2009-07-01 4:12 ` Leslie Rhorer
2009-07-01 5:25 ` Martin K. Petersen
2009-07-03 15:46 ` Leslie Rhorer
2009-07-06 0:05 ` Martin K. Petersen
2009-07-07 3:15 ` Leslie Rhorer
2009-06-28 23:54 ` John Robinson
2009-06-29 0:02 ` Mikael Abrahamsson
2009-06-29 10:07 ` Goswin von Brederlow
2009-06-29 14:45 ` Martin K. Petersen
2009-07-03 16:12 ` Leslie Rhorer
2009-07-03 17:23 ` Billy Crook
2009-07-04 14:59 ` Bill Davidsen
2009-07-04 15:20 ` John Robinson
2009-07-05 22:03 ` Leslie Rhorer
2009-07-05 22:12 ` John Robinson
2009-07-07 2:57 ` Leslie Rhorer
2009-06-30 17:01 ` Bill Davidsen
2009-06-30 18:22 ` Greg Freemyer
2009-07-01 18:53 ` Bill Davidsen
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