Re: [Networker] How to use multiple AFTD devices
2009-10-22 11:34:12
On 10/22/09 11:00 AM, MIchael Leone wrote:
Another clarification - I am speaking of a dedicated storage node - it
only backs up itself. It's a SQL server, so what I am backing up are SQL
DBs. So how do I get NetWorker to write to both devices at the same time?
And would I have to enumerate exactly what DBs I want to save, to each
device?
If you have both AFTD's in the same media pool -- and your client has
multiple savesets -- you can get NetWorker to pretend to balance the
load by setting the Target sessions value to 1 for each device (in the
Properties->Configuration tab). This assumes that you have multiple
savesets writing at the same time.
EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU> wrote on
10/22/2009 10:55:47 AM:
Thierry FAIDHERBE <thierry.faidherbe AT forem DOT be> wrote on 10/22/2009
09:54:39 AM:
Yes and no : AFD are NOT like tape : When 1 is full, the Session
is suspended until AFD space is recovered and does NOT continue
to another dev even if it is labelled in same pool.
So, best is to create 2 AFDs, in 2 separate pools. Do load balancing
of your backups, some to AFD1's pool, the others to AFD2's pool.
I have 6 AFDs devices defined as E:\AFD, F:\AFD, G:\AFD,
H:\AFD, I:\AFD and J:\AFD each one labelled in its own pool and I do
load balancing of my backups using groups. (define groups in AFD pool
authorized group list)
You've lost me. You have 1 server, with 6 AFTD devices attached. And you
have 6 pools, one each for each AFTD device. And so you have .. what,
the
same client, defined 6 times, each with a different backup selection?
And
each of these 6 clients is in a separate group? And you run all 6 groups
every night?
I'm still confused, sorry. :-)
Works like a charm. E and F are 2TB Luns I stage in parallel.
Then stage as you need. Do not forget, 1 read (recover/stage/clone)
operation a time per device :-)
Cheers
Th
-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On
Behalf Of MIchael Leone
Sent: jeudi 22 octobre 2009 15:41
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] How to use multiple AFTD devices
I have a question. I have a Windows NW 7.4.2 storage node that I use
as
an
AFTD device. The disk space in question is presented from my SAN. So I
define the device as "FQDN:drive letter\file path", and this all works
wonderfully - I back up to disk, then clone to tape.
Problem: I need enough space to total 2.5 TB in size, and my SAN only
allows me to present at most a 2 TB disk (it's an HP EVA 8000). So
what
I
was thinking - present 2 disks on 1.2TB each (the daily backup size is
1.1
TB, so 2 drives would allow me to keep 2 days backup on disk).
What kind of config do I need to tell NetWorker? Do I just define 2
devices, and as long as they are both in the same media pool, things
will
Just Work? Will NetWorker treat it the same way it treats tapes -
i.e.,
will it fill up drive X: first, then start using drive Y:? Will it use
parallelism, and write to X: and Y: at the same time? I'm guessing
that
I
can define multiple AFTDs this way, right?
Has anyone done this? Is there something I am not taking into account?
Thanks
--
Michael Leone
Network Administrator, ISM
Philadelphia Housing Authority
2500 Jackson St
Philadelphia, PA 19145
Tel: 215-684-4180
Cell: 215-252-0143
<mailto:michael.leone AT pha.phila DOT gov>
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