El Domingo 9 de febrero de 2014 19:12, Prather, Wanda
wanda.prat...@icfi.com escribió:
Del, you are a national treasure!
You are very kind to take time to respond.
My backups are already very well balanced, I have 2 servers, the DBA's have the
DBs split between them so well that they
Wanda,
I have fought with this problem myself, and here is what I concluded (at least
in our environment, YMMV):
1. Running single-stream backups (one db at a time) you will never see the
performance you expect, due to the Windows O/S tcpip stack. I haven't had a
chance to stress-test
In my experience there is nothing wrong with the TCP stack in Windows.
Especially Windows2008R2 performs very well. For a single stream from a
2008R2 client (dsm sel big file of zeroes) to an AIX TSM-server 500km
away over 10Gig directly to LTO5 has a speed of around 200MB/ at our setup.
Thank you for sharing that.
Will save me banging my head against the wall for nothing! :)
-Original Message-
From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of
Schaub, Steve
Sent: Monday, February 10, 2014 7:57 AM
To: ADSM-L@VM.MARIST.EDU
Subject: Re: [ADSM-L]
Thank you - forgot to mention this is a Windows TSM server.
I am curious that the drive is the bottleneck - a big file of zeros should
compress, and give you 200MB/sec on LTO5, yes?
-Original Message-
From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Hans
Have you examined the network topology altogether. Our Exchange
environment has network hops all over the place so our networking guys
recommended adding a VLAN tag to both the TSM server and the Exchange DB
servers to do backups. In that way, all hardware firewalls, IPS's,
load-balancers, etc.
Hi Sergio!
Yep, we had had some other issues with network disconnects, so we just 2 weeks
ago added NICS to the Exchange servers and put them on the same segment as the
TSM server. No routers, firewalls, hops.
Think my next step is a performance trace.
W
-Original Message-
From:
Wanda, one other thing I would like to point out. With the TSM Server being
on Windows, one other thing to consider is RSS (Receive Side Scaling). All
the processing of IP packets happens on 1 core of the server, and this can
be a potential bottleneck. One way to determine this is to watch the TSM
Woot, that's cool to know!
Thanks Dave.
I will run a test tonight and look for a spike.
Is RSS something that is enabled in the NIC or in Windows?
I know the network guys already had to do some tweaking of the 10G TOE card.
Wanda
-Original Message-
From: ADSM: Dist Stor Manager
Both Wanda
http://technet.microsoft.com/en-us/library/gg162712%28v=ws.10%29.aspx
-Rick Adamson
904.783.5264
-Original Message-
From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of
Prather, Wanda
Sent: Monday, February 10, 2014 1:18 PM
To: ADSM-L@VM.MARIST.EDU
I am testing a restore and conversion/upgrade of my last 6.1 server, before
it becomes a pumpkin in April!
I am having issues following the wonderful, detail, draft manual, since it
doesn't give specifics as to who I should be when I perform various tasks.
For instance, after installing and
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