i no longer do brick levels, and we didnt have decent enough tape drive tech 
(mammoth2, yuk) to do much mpx/ms.  i used to do mpx 4 (normal fs jobs), 
however the drives would fail in much shorter time, and we did get quite a high 
drive fail rate with exabyte.  time wise, i couldnt allocate more than 1 drive 
to deal with brick level.  we also had a single exch server so pulling a few 
streams while folks are hitting mb's wasnt fun.  so as the db got bigger we 
went a diff route, tape tech and exch deployment wise.  info stores were always 
speedy, so we bought recov mgr for exchange and that gives us the ability to 
recover mailboxes without having to deal with the exch org directly or brick 
level backups.  

lto2 is our current tape tech and we get 40mb/sec,single stream, for info 
stores and we have a few backend servers.  i have no complaints now in terms of 
backup speed/message level recoverability.
 
aaarrrggghhh!!!!
FreeBSD rocks

----- Original Message ----
From: Curtis Preston <cpreston at glasshouse.com>
To: K Chapman <tech2187 at yahoo.com>; "Martin, Jonathan" <JMARTI05 at 
intersil.com>; Anas Kayal <anas at up.org.qa>; veritas-bu at 
mailman.eng.auburn.edu
Sent: Thursday, May 10, 2007 5:50:31 PM
Subject: Re: [Veritas-bu] Exchange Mailbox Backup




 
 


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What kind of multistreaming/multiplexing
are you using, and what is your target?  I?ve gotten mailbox backup
performance up to an ?acceptable? level (4 years ago I was at about
50 MB/s) by creating 28 simultaneous mailbox streams, one for each letter of
the alphabet (used * at the A-Z level) and sending all of those to the same
tape drive.  I?ll bet I could get faster than that now.
 

  
 



---
 

W. Curtis
Preston
 

Author of
O'Reilly's Backup & Recovery
and Using SANs and NAS
 

VP Data
Protection
 

GlassHouse
Technologies
 




  
 










From:
veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of K Chapman

Sent: Thursday, May 10, 2007 12:22
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
 



  
 



----- Original Message
----

From: "Martin, Jonathan" <JMARTI05 at intersil.com>

To: Anas Kayal <anas at up.org.qa>; veritas-bu at mailman.eng.auburn.edu

Sent: Thursday, May 10, 2007 8:30:55 AM

Subject: Re: [Veritas-bu] Exchange Mailbox Backup
 

We recently upgraded our storage on our
Exchange 2003 cluster from a locally attached Dell Powervault 220 to a HDS
SAN solution and saw our back times go from 8 hours to 45 minutes making no
other changes.  I'm not sure exactly what our KB/sec was before, but we're
seeing better than 100MB/sec now over Gigabit Ether.
 

 
 

-Jonathan
 

  
 








From:
veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Anas Kayal

Sent: Thursday, May 10, 2007 8:17
AM

To:
veritas-bu at mailman.eng.auburn.edu

Subject: [Veritas-bu] Exchange
Mailbox Backup
 



Im backing up Exchange 2003 Mailboxes through my LAN. Backup
process takes about 10 hours for about 200GB of data. Does anyone know what I
can do to drop it down. 
 

 
 

Anas 
 

 
 






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