Re: [Veritas-bu] Exchange 2003 Information Store Backup Slow
2007-07-31 09:56:55
Yes, when we speed it up we played with the buffer
settings.
# of buffers is set at 64, size is 32768.
When I started this 6
months ago, they said only professional services could help me. But I will
say that the guy that came in did help, because before it was talking 23 hours
to backup. With the multiple streaming of the information stores,
buffer changes, and installing the STK tape drivers for windows instead of the
Veritas ones, we saw improvements.
I was talking with the
disk fairies and they are going to relay out the disks for the exchange
servers. They are saying, from what they are seeing, this will also help
with the read performance. I will just have to wait for them and be
patience.
Kevin
Ok fiber is very, very good, because that is what I
use (very similar, but all HP branded).
spoken to Veritas on what changes they
made??
Regards
Simon Weaver 3rd Line Technical Support Windows
Domain Administrator
EADS Astrium
Limited, B23AA IM (DCS) Anchorage Road, Portsmouth, PO3
5PU
Email:
Simon.Weaver AT Astrium.eads DOT net
EMC DMX3000 disk..... I would have to ask the disk
fairies what type of disk, but I believe it is the high end EMC disk.
They have their own Disk SAN setup with 2 fiber connections to ever
server.
kevin
Forgot to ask, what sort of disks are the DB's on? High speed
fibre, or SCSI Internal drives or hot
swappable?
Regards
Simon
Weaver 3rd Line Technical Support Windows Domain
Administrator
EADS Astrium
Limited, B23AA IM (DCS) Anchorage Road, Portsmouth, PO3
5PU
Email:
Simon.Weaver AT Astrium.eads DOT net
1) I checked and there is no tracker.exe
running.
2) There is no AV running on
it.
Checked event logs and only found entries about backing
up specific files under the information store.
Network speed?!? They are SAN MEDIA Servers, and
backup directly to the SSO drives.
Yes the policy is configured to use the storage unit
for the media server.
Seeing your backup time does not sound positive to
me.
75GB in 47 mins, means taking my 805GB divide by 75GB =
10.72 hours!
Hi
Well my Ex2k3 is a SAN Media - get approx 60 - 80GB+ - I
backup the information store policy and it uses one
drive.
You can use the * at the end to stream the stores (which
sounds like the route veritas has made).
To give you an idea, checking last nights backup took 47
mins to backup 75GB
I use SSO/SAN/Fiber/LTO3 HP ESL
Library.
Two things to look at:
1) Make sure tracker.exe is not running locally on the
Exchange box (Start, Run, type MSCONFIG and goto the STARTUP
tab)
2) Turn off any AV for the Windows operating system (do not
turn off Exchange AV)
Any errors in the event logs? Almost sounds like Network
speeds to me.
your policy is configured to use the storage unit for the
Media Server?
Hope this helps (a little!)
Regards
Simon
Weaver 3rd Line Technical Support Windows Domain
Administrator
EADS Astrium
Limited, B23AA IM (DCS) Anchorage Road, Portsmouth, PO3
5PU
Email:
Simon.Weaver AT Astrium.eads DOT net
All,
I have 2 Exchange 2003 servers, both running
Server 2003 SP2. I will have to admit I don't know much about the
2003 exchange setup, but I was told that they are on the latest patches
for Exchange. Both servers are SAN Media servers and backup to a
tape drive via SSO. The Silo is a L700E with 9940B tape
drives. The Disk space is actually EMC drives via a Disk SAN.
The backup is a Full backup every night.
Here is the issue… the backup doesn't run very
fast at least I don't think so.
Six months ago, we had Veritas come in and look
at them and help speed them up. We did 2 things; One we set
limits on the mailboxes of people so the overall size of the information
stores when down from 1.2TB to 705GB. Two, we changed the backups to
backup each of the 4 information stores at the same time and multiplex
them.
1st Exchange Server: (Total 81.4GB per
hour) SG1
Mail 20.3GB
per hour SG2
Mail 20.5GB
per hour SG3
Mail 20.1GB
per hour SG4
Public Folder 20.5GB per hour
2nd Exchange Server: (Total 82.6GB per
hour) SG1
Mail 19.5GB
per hour SG2
Mail 19.9GB
per hour SG3
Mail 19.4GB
per hour SG4
Mail 23.8GB
per hour
Since that translates to about 22.5MB per
second on tape drives that should be able to do about 60MB. I have a
couple Windows 2003 server backups over the network that are doing 35MB
per second!
So, does anybody get about the same
performance? Better? Any ideas about things to look at?
Kevin Whittaker Syniverse Technologies Systems
Engineer - UNIX Admin Work: (813)
637-5502 Cell: (813) 810-6456
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from your system. Astrium disclaims any and all liability if this email
transmission was virus corrupted, altered or
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