Re: [Users] host raiding two LUN from different external storage.... continuation...
Hi again!
I continue, it was something I forgot to mention in last mail.
If the oVirt storage system could bring in two LUN's from different DC's, and use
LVM to join them as one mirrored unit, it would be exactly what I wanted. That would solve
a lot of issues.
But than of coarse the NPIV issue still remains...
Rgrds Johan
-----Dan Yasny <dyasny(a)redhat.com> skrev: -----
Till: Johan Kragsterman <johan.kragsterman(a)capvert.se>
Från: Dan Yasny <dyasny(a)redhat.com>
Datum: 2012.07.29 12:55
Kopia: users(a)ovirt.org
Ärende: Re: [Users] host raiding two LUN from different external storage
You can use replicated at the SAN level storage between different DCs, for DR. You can
also use Gluster for the same purpose.
Setting RAID1 between two geographically separate hosts is asking for trouble.
----- Original Message -----
From: "Johan Kragsterman"
<johan.kragsterman(a)capvert.se>
To: users(a)ovirt.org
Sent: Sunday, 29 July, 2012 12:08:20 PM
Subject: [Users] host raiding two LUN from different external storage
Hi!
In some setups, like when you got two datacenters that works like
failover sites, you would like to have two external raid
controllers(storage devices), one in each datacenter.
You then send two identical LUN's, from each controller, to a
cluster, let's say two hosts, for simplicity. What you normally do
is to host raid these LUN's in mirror(raid 1), so the hosts write
the same to both LUN's, and both controllers.
Question for me here is if I can accomplish this in oVirt management?
Because if I can't, it will be a problem, because if I host raid at
the host level, then the storage would be local storage for oVirt,
wouldn't it? And then I suppose it can't be used for live migration,
can it?
Regrds Johan
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Regards,
Dan Yasny
Red Hat Israel
+972 9769 2280