Re: [ADSM-L] Exchange backup performence
2013-04-05 11:14:30
"it depends" on your infrastructure, and what your actual performance issue is.
LAN-free was invented when fibre connections were substantially faster than
connections over 10/100 Lan.
Now I have customers where the network/LAN connection is faster at 10GE than
their fibre at 4GBit or 8GBit.
Your network connections are probably GIG/E (max 100 Megabytes per second) or
10GE (1000 Megabytes per second).
Your fibre connections for LAN-Free are probably 4Gbit (400 Megabytes per
second) or 8Gbit (800 Megabytes per second).
And,
The fact that you have a fast connection between your Exchange server and your
TSM server, doesn't necessarily mean your Exchange server is capable of moving
the data at max possible speed.
So
* do you have a performance problem?
* what is the speed of your network connection from the Exchange server
to the TSM server?
* are you sure that the performance problem is the network speed and not
in the Exchange server itself (are you sure it isn't CPU-bound or disk-I/O
bound? have you run a trace?)
* is the problem that your TSM server NIC is too busy to accept the data
from Exchange? In that case the simpler solution might be to add a NIC to your
TSM server.
* if your site is planning to upgrade to 10GE in the near future, that is
a simpler solution (no additional management overhead for you, no HBA or fibre
port needed)
* do you have tape drives available for Lan_Free?
* is the bottleneck in the diskpool on your TSM server? If so have you
tried sending Exchange backups direct to tape?
* can you put the necessary HBA's for the fibre connection into your
Exchange server?
After call those considerations, consider Lan-Free.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
duholm
Sent: Friday, April 05, 2013 5:03 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Exchange backup performence
Hi All
I was hoping someone would know if Exchange backup is faster using LAN-free
instead of the normal LAN backup. If it is how much faster?
Best regards
Bo
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