Jonathan wrote: I haven't done a brick level backup of Exchange since I
learned about Recovery Storage Groups
Well that makes more sense, because I have never, ever seen any performance
increase of BLB regardless of the hardware involved, the spindles involved,
fiber, tape technology. And the originator was specifically asking about the
backup type "BLB".
BLB are slow, slow slow! and should be avoided - as I pointed out in an
earlier thread, Ex2k3 offers ALOT more functionaility for you to move away
from this type of backup.
Regards
Simon Weaver
3rd Line Technical Support
Windows Domain Administrator
EADS Astrium Limited, B23AA IM (DCS)
Anchorage Road, Portsmouth, PO3 5PU
Email: <mailto:Simon.Weaver at Astrium-eads.net> Simon.Weaver at
Astrium-eads.net
-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Martin,
Jonathan
Sent: 10 May 2007 21:18
To: Paul Keating; veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Exchange Mailbox Backup
I'd tell you I've got the magic voodoo over here Paul, but then you'd want
it. And If I'm gonna give up the goods I'd better get dinner and dancing
first. =P
Our Exchange Fulls running by themselves over GigE to a DSSU sitting around
doing nothing else does about 100MB/sec, until it hits the logs. Even then,
its very fast but the average time rounds out to 80MB/sec, still
respectable. My fastest backup until that point was a Redhat 3 / Oracle 9
Database at 55MB/sec (give or take Archive logs.) In my Exchange case, the
secret has been number of spindles and drive speeds on the SAN. We did
serious I/O testing on the Exchange server's storage and went for
performance all the way. I think each storage group and logs are their own
8 disk raid5 w/ 146GB 15K FC drives in a Hitatchi SAN. Surprisingly, I got
a Sun StorEdge 5320 running remote NDMP backups to LTO3 at 100MB/sec first
try, yesterday! That was purely test data, and it remains to be seen if it
will maintain that after we load up terabytes of data. (I don't manage the
SAN or the NAS, so all my secret sauce is definitely someone else's.)
I haven't done a brick level backup of Exchange since I learned about
Recovery Storage Groups, and that was on Arcserve, or whatever it was called
before CA bought it. That was the 90's and all my memories from the 90's
are bad, so lets not go there. I have to admit I've never run BSD. Sounds
like fun, and the devil logo has definitely got it going on! Silly penguin.
-Jonathan
_____
From: Paul Keating [mailto:pkeating at bank-banque-canada.ca]
Sent: Thursday, May 10, 2007 3:26 PM
To: K Chapman; Martin, Jonathan; Anas Kayal;
veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Exchange Mailbox Backup
I've never seen 100MB/s, let alone "better than" 100MB/s on a single GigE
link, for ANY client type, let alone Windows, or Exchange, so colour me
surprised.
:o)
--
-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of K Chapman
Sent: May 10, 2007 3:22 PM
To: Martin, Jonathan; Anas Kayal; veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Exchange Mailbox Backup
you are seeing this speed doing brick level, or are you seeing it with info
store backups? ive never seen brick level go too fast on any type of
disk/net/tape drive combo (5.5/2000/2003). info stores go quite fast in all
cases (as expected).
aaarrrggghhh!!!!
FreeBSD rocks
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