Veritas-bu

[Veritas-bu] Exchange Mailbox Backup

2007-05-11 11:38:14
Subject: [Veritas-bu] Exchange Mailbox Backup
From: anas at up.org.qa (Anas Kayal)
Date: Fri, 11 May 2007 18:38:14 +0300
Well first of all data is located on the local exchange machine. Backups are 
running on gigabit Ethernet and the max KBps I get is around 6400. The policy 
setup is using MS Exchange and I selected MS EXCHANGE MAILBOX from the 
directives set. I don't know what recovery storage groups are since im not 
responsible for exchange and if my exchange guy knew about it he should've told 
me bit I guess he doesn't. what can I do with that? 
 
Currently I have no SAN. We are still in the process of evaluating what we 
need. It takes almost 11 hours to backup my full mailbox store. Info_Store 
backups are fast at around 40MBps. I have no mutliplexing/multistreaming 
configured on this policy. Would it make a difference for exchange? If so, what 
should the settings be given I have a Hp MSL6060 Tape Lib with to LTO3 drives?

________________________________

From: veritas-bu-bounces at mailman.eng.auburn.edu on behalf of WEAVER, Simon 
(external)
Sent: Thu 5/10/2007 11:20 PM
To: 'Martin, Jonathan'; Paul Keating; veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Exchange Mailbox Backup


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: Simon.Weaver at Astrium-eads.net <mailto: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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