Emuex 10000-E and mcdata switches.  Yeah Navi agent is installed and
also access logix. Switches are zoned and there is only one HBA in the
server.

-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of Matthew Huff
Sent: Tuesday, July 19, 2005 11:06 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] Slowness of backups

What type of HBA cards and what type of SAN switch do you have? Are you
running access-logix in Navisphere? Are the switches zoned? what speed
are the fibre hba's running at? 

-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of Raph
Sent: Tuesday, July 19, 2005 10:52 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] Slowness of backups

Hi,

Here is my problem.  I have a Clariion CX500 connected to a Windows 2003
server that has a 2Tb filesystem.  I have 2 x LTO3 fiber drives that are
also directly connected to the windows server via the SAN.  The windows
server does not have anti virus installed or any third party apps.  When
I run a test backup on the C: of the server I get over 60MB/S
throughput.
When I run a backup on the E: (which is SAN attached) I only get 25
MB/s.
The parallelism is set to 16 and 8 on each drive.  If someone knows why
I am only getting 25 MB/S and how I can increases this performance
please let me know.  These a flat files that are being backed up that
have no i/o on the them at the time of the tests.


Thanks

Raph

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