On Mar 4, 2011, at 11:19 AM, Eric D. Mudama wrote:

> On Fri, Mar  4 at  9:22, Robert Hartzell wrote:
>> In 2007 I bought 6 WD1600JS 160GB sata disks and used 4 to create a raidz 
>> storage pool and then shelved the other two for spares. One of the disks 
>> failed last night so I shut down the server and replaced it with a spare. 
>> When I tried to zpool replace the disk I get:
>> 
>> zpool replace tank c10t0d0
>> cannot replace c10t0d0 with c10t0d0: device is too small
>> 
>> The 4 original disk partition tables look like this:
>> 
>> Current partition table (original):
>> Total disk sectors available: 312560317 + 16384 (reserved sectors)
>> 
>> Part      Tag    Flag     First Sector         Size         Last Sector
>> 0        usr    wm                34      149.04GB          312560350
>> 1 unassigned    wm                 0           0               0
>> 2 unassigned    wm                 0           0               0
>> 3 unassigned    wm                 0           0               0
>> 4 unassigned    wm                 0           0               0
>> 5 unassigned    wm                 0           0               0
>> 6 unassigned    wm                 0           0               0
>> 8   reserved    wm         312560351        8.00MB          312576734
>> 
>> Spare disk partition table looks like this:
>> 
>> Current partition table (original):
>> Total disk sectors available: 312483549 + 16384 (reserved sectors)
>> 
>> Part      Tag    Flag     First Sector         Size         Last Sector
>> 0        usr    wm                34      149.00GB          312483582
>> 1 unassigned    wm                 0           0               0
>> 2 unassigned    wm                 0           0               0
>> 3 unassigned    wm                 0           0               0
>> 4 unassigned    wm                 0           0               0
>> 5 unassigned    wm                 0           0               0
>> 6 unassigned    wm                 0           0               0
>> 8   reserved    wm         312483583        8.00MB          312499966
>> 
>> So it seems that two of the disks are slightly different models and are 
>> about 40mb smaller then the original disks.
> 
> 
> One comment: The IDEMA LBA01 spec size of a 160GB device is
> 312,581,808 sectors.
> 
> Instead of those WD models, where neither the old nor new drives
> follow the IDEMA recommendation, consider buying a drive that reports
> that many sectors.  Almost all models these days should be following
> the IDEMA recommendations due to all the troubles people have had.
> 
> --eric
> 
> -- 
> Eric D. Mudama
> edmud...@bounceswoosh.org
> 


Thats encouraging, if I have to I would rather buy one new disk then 4.
Thanks, Robert 

--   
   Robert Hartzell
b...@rwhartzell.net
 RwHartzell.Net, Inc.



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