Those WD20EARS emulate 512 bytes sectors, so yes you can freely mix and match
them with other "regular" 512 bytes drives. Some have reported slower
read/write speeds but nothing catastrophic.
Or you can create a new 4K aligned pool (composed of only 4K drives!) to really
take advantage of them.
The way I understand it is that you should add new mirrors (vdevs) of the same
size as the other vdevs already attached to the said pool. That is, if your
vdevs are mirrors of 2TB drives, don't add a new mirror of, say, 1TB drives.
I might be wrong but this is my understanding.
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Maybe this can be of help: (ZFS Administration Guide)
http://docs.sun.com/app/docs/doc/819-5461/gavwg?a=view
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24 disks, 2 controllers. You could create a mirrored pool of 12 vdevs, e.g.
zpool create tank mirror c0t0d0 c1t1d0
zpool add tank mirror c0t1d0 c1t2d0
...
Alternating between the 2 controllers for each mirror so that when one
controller fails, the pool would become degraded but still available.
Actually, it is not my blog ;)
To answer your question: you first need to create a new vdev that is 4K aligned
unfortunately. I am not aware of any other means to accomplish what you seek.
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I have recently done this. See here for more details:
http://www.solarismen.de/archives/5-Solaris-and-the-new-4K-Sector-Disks-e.g.-WDxxEARS-Part-2.html)
What version are you running?
There's a compiled version of the modified zpool command that will create pools
that are 4K aligned somewhere, f
For anyone that is interested, here's a progress report.
I created a new pool with only one mirror vdev of 2 disks, namely with the new
SAMSUNG HD204UI. These drives, along with the older HD203WI, use Advanced
Format Technology (e.g. 4K sectors). Only these drives had hard errors in my
pool, as
Thanks for the input!
I am using an Ipass to Ipass cable that connects my HBA to my backplane. It was
firmly locked into both connectors.
I offlined 2 supposedly faulty SAMSUNG drives, scanned their whole surface
using estools and it did not report any errors.
I'm starting to think that it ma
Hi,
I recently noticed that there are a lot of Hard Errors on multiple drives
that's being reported by iostat. Also, dmesg reports various messages from the
mpt driver.
My config is:
MB: SUPERMICRO X8SIL-F
HBA: AOC-USAS-L8i (LSI 1068)
RAM: 4GB ECC
SunOS SAN 5.11 snv_134 i86pc i386 i86pc Solaris
