[Veritas-bu] LTO3 [C1]
2007-03-22 18:52:56
Dom,
I have 4 media servers and two L700 librarries
Ten LTO3 each librarry
Media servs has giganet cards
Switches and LTO3 are all fiber as well
Thanks
----- Original Message -----
From: Dominik Pietrzykowski [dominik_pietrzykowski at toll.com.au]
Sent: 03/22/2007 06:37 PM
To: Hesham AFIFI/us/socgen at socgen;veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] LTO3 [C1]
Hi Hesham,
What are the H/W specs of the media servers ? How many drives each ? What
type of NICs ?
What sort of network ? How much data are the clients pumping out ? Do you
have any multiplexed together ?
It's hard to get these drives going fast (LTO3s and T10Ks) unless it's on a
test bench, duping tapes, using DSSUs or fat network pipes, grunty servers
and clients that stream well. I don't know anyone who has LTO3s and T10Ks
running consistently at full speed.
Regards,
Dom
_____
From: Hesham.AFIFI at sgcib.com [mailto:Hesham.AFIFI at sgcib.com]
Sent: Friday, 23 March 2007 9:13 AM
To: veritas-bu at mailman.eng.auburn.edu
Subject: [Veritas-bu] LTO3 [C1]
Hi All
I have a question regarding LTO3 performance
>From the NBU Administrative console I see the speed between 5000 KB - 15000
KB
My environment is as follow
Netbackup Version : 5.1 MP4
OS: Solaris 8 on All Master and Media servers
Library : STK L700 with 10 LTO3
Files
NET_BUFFER_SZ is setup to 131072 on Client and Media Server
SIZE_DATA_BUFFERS 131072 on all Media servers
NUMBER_DATA_BUFFERS is setup 64
We do in-line copies ' two ' and our multiplexing number is 15 and 20 for
some policies
Do you think if I increase these numbers in NUMBER_DATA_BUFFERS,
SIZE_DATA_BUFFERS it might increase the overall performance
Best Regards
Hesham Afifi
ITEC- GLS- SYSTEMS-UNIX
212-278-6212 (office)
917-609-5312 (pager/Cell)
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