|Ambrogio De Lorenzo||Sep 16, 2009 6:59 am|
|André Gillibert||Sep 16, 2009 8:05 am|
|Ambrogio De Lorenzo||Sep 16, 2009 9:47 am|
|Brian J. Murrell||Sep 16, 2009 9:58 am|
|mala...@us.ibm.com||Sep 16, 2009 11:19 am|
|Ambrogio De Lorenzo||Sep 16, 2009 12:03 pm|
|Ambrogio De Lorenzo||Sep 16, 2009 12:15 pm|
|Brian J. Murrell||Sep 16, 2009 12:49 pm|
|André Gillibert||Sep 16, 2009 1:03 pm|
|Ambrogio De Lorenzo||Sep 16, 2009 1:22 pm|
|mala...@us.ibm.com||Sep 16, 2009 1:33 pm|
|Kai Stian Olstad||Sep 16, 2009 3:03 pm|
|Bryn M. Reeves||Sep 17, 2009 2:57 am|
|Stuart D. Gathman||Sep 17, 2009 8:06 am|
|Brian J. Murrell||Sep 17, 2009 8:34 am|
|Stuart D. Gathman||Sep 17, 2009 3:49 pm|
|Les Mikesell||Sep 17, 2009 4:26 pm|
|Brian J. Murrell||Sep 17, 2009 4:48 pm|
|Stuart D. Gathman||Sep 17, 2009 5:57 pm|
|Sven Eschenberg||Sep 17, 2009 6:51 pm|
|Stuart D. Gathman||Sep 17, 2009 6:55 pm|
|Mark H. Wood||Sep 18, 2009 9:05 am|
|Stuart D. Gathman||Sep 18, 2009 12:12 pm|
|Subject:||Re: [linux-lvm] Using LVM Mirroring to obtain a usable backup|
|From:||Mark H. Wood (mwo...@IUPUI.Edu)|
|Date:||Sep 18, 2009 9:05:27 am|
On Thu, Sep 17, 2009 at 08:58:08PM -0400, Stuart D. Gathman wrote:
A high end SAN server means you allocate "disks" from the SAN instead of buying physical disks. Adding another "disk" to a server can be as simple as allocating another "LV" (or whatever the SAN software calls it) and attaching it. The OP would simply clone his disk in the SAN (and needn't worry about the duplicate VGID as long he doesn't attach the clone) before doing the upgrade.
Dunno if I'd call our HP MSA1510i "high end" but it works like that. Just define an initiator, slice off some storage, and assign it.
I usually think of the FC-based stuff as "high end" since a single fiber switch tends to cost more than we paid for our whole ~16TB iSCSI SAN. (Now expanded to more like 40TB and we should be able to take it up to around 80TB.)
I have one client with a SAN system, and it seems to perform well. It is one client that never needs to install a physical disk on a server I maintain for them. (Caveat, booting from iSCSI requires bringing up a Nic - which is tricky to do for linux in initrd.)
A few (more pricey) NICs include iSCSI on the card and would appear to serve as a normal boot disk so far as the host is concerned. I haven't tried that yet. FC HBAs all seem to have this (and for what they cost, they should).
-- Mark H. Wood, Lead System Programmer mwo...@IUPUI.Edu Friends don't let friends publish revisable-form documents.