Essentially yes, the entire pool dies. If you think of each mirror as an
individual disk, you've just striped them together so the pool goes offline if
any mirror fails, and each mirror can only guard against one half of the mirror
failing.
If you want to guard against any two trays failing,
Sorry, but I'm stuck at 6540.
There are so many options in how you would practically configure these that
there is no way to give a sensible answer to your question. But the most
basic questions are: Does the racks have power from separate PDUs? Are they
in physically remote locations? Does
On Fri, 11 Jul 2008, Ross wrote:
If you want to guard against any two trays failing, you need to use
some kind of dual parity protection. Either dual mirrors, or
raid-z2. Given that you only have 8 LUN's, raid-z2 would seem to be
the best option.
System reliability will be dominated by
Thank you for all the feedback! It's appreciated!
@hartz
Does the racks have power from separate PDUs?
Yes
Are they in physically remote locations?
No, the racks are side by side
Does your fabric switches have redundant power from separate PDUs?
yes
Do you want mirroring here purely for
I have a scenario (tray failure) that I am trying to predict how zfs
will behave and am looking for some input . Coming from the world of
svm, ZFS is WAY different ;)
If we have 2 racks, containing 4 trays each, 2 6540's that present 8D
Raid5 luns to the OS/zfs and through zfs we setup a
On Thu, 10 Jul 2008, Robb Snavely wrote:
Now in the VERY unlikely event that we lost the first tray in each rack
which contain 0 and 4 respectively...
somepool
mirror---
0 |
4 | Bye Bye
---
