Hello Matt,
Wednesday, March 7, 2007, 7:31:14 PM, you wrote:
MB> So it sounds like the consensus is that I should not worry about using
slices with ZFS
MB> and the swap best practice doesn't really apply to my situation of a 4 disk
x4200.
MB> So in summary(please confirm) this is what we are saying is a
MB> safe bet for using in a highly available production environment?
MB> With 4x73 gig disks yielding 70GB each:
MB> 5GB for root which is UFS and mirrored 4 ways using SVM.
MB> 8GB for swap which is raw and mirrored across first two disks
MB> (optional: or no liveupgrade and 4 way mirror this swap partition)
MB> 8GB for LiveUpgrade which is mirrored across the third and fourth two disks
MB> This leaves 57GB of free space on each of the 4 disks in slices
MB> One zfs pool will be created containing the 4 slices
MB> the first two slices will be used in a zmirror yielding 57GB
MB> The last two slices will be used in a zmirror yielding 57GB
MB> Then a zstripe (raid0) will be layed over the two zmirrors
MB> yielding 114GB usable space while able to sustain any 2 drives failing
without a loss in data
Eventually if you care about how much storage is available then:
1. 8GB on two disks for / in mirrored config (SVM)
2. 8GB on another two disks for SWAP in mirrored config (SVM)
3. the rest of the disks for zfs
a. raidz2 4 slices, capacity of 2x slice, bad random read
performance
b. raid-10 4 slices, capacity of 2x slice, good read performance,
less reliability than a.
You loose ability to do LU, but you gain some storage.
--
Best regards,
Robert mailto:[EMAIL PROTECTED]
http://milek.blogspot.com
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
