Hi Daniel
TDP through LAN takes 38 hours and LANfree takes 30 hours.
I am also working on the OS/HARdware performance factor, I am too having
doubt that the read I/O is slow...
We are having HP server
ProLiant DL180 G6
, windows 2003 64Bit ,
OS WIN2k3 64_bit Ent Ed.
Lotus. 8.5.2
TDP for mail 5.5.3
Storage agent 5.5
Version of ibmtape device driver on the Domino windows host that controls
tape drives---6.2.1.5
Regards
Sandeep
----- Original Message -----
From: "Daniel Sparrman" <daniel.sparrman AT EXIST DOT SE>
To: <ADSM-L AT vm.marist DOT edu>
Sent: Wednesday, May 18, 2011 10:20 AM
Subject: [ADSM-L] Ang: tdp for domino LAN free backup poor performance
Hi
First off, there are several things that affect the performance except for
just the optfile, software versions and your operating system:
* What speed are you having making the backup over the LAN?
* How fast are the disks on your Domino server, are they able to transfer
data at the speeds your tape drives are writing?
* How large are the files on your Domino server (average) ?
* What's the version of the IBMtape driver on your Domino host? The
version on your TSM server (which controls the library) really doesnt
affect read/write performance since it only controls the robotics.
Have you verified that the backup is actually being done across the SAN
and not the LAN? 700GB in 30 hours is 23MB/s, which more looks like a
slower than average LAN backup over gigabit ethernet.
If your Domino server cant deliver data to the tapes drives with enough
speed, you'll end up with a shoeshine effect, which will seriously reduce
performance. Since you're using IBMtape, I'm assuming you're using some
sort of LTO drives. If you for example have a LTO3 drive, it will write
data @ 80MB/s natively. If your host only delivers data at 40MB/s, you
will have a drive that is spending more time rewinding than actually
writing the data.
Some more information about your environment (hardware on both client &
server incl tape technology, your TDP configuration file) would be helpful
in determining the error.
Best Regards
Daniel Sparrman
Exist i Stockholm AB
Växel: 08-754 98 00
Fax: 08-754 97 30
daniel.sparrman AT exist DOT se
http://www.existgruppen.se
Posthusgatan 1 761 30 NORRTÄLJE
-----"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> skrev: -----
Till: ADSM-L AT VM.MARIST DOT EDU
Från: Sandeep Jain <sandeep.jain AT DCMDS DOT COM>
Sänt av: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
Datum: 05/18/2011 06:54
Ärende: tdp for domino LAN free backup poor performance
HI friends
i am experiencing very very poor backup performance while taking backup of
domino server.
It is having around 700GB of data and LAN FREE backup on 2 tapes
completing in 30 hours.
OS WIN2k3 64_bit Ent Ed.
Lotus. 8.5.2
TDP for mail 5.5.3
Storage agent 5.5
Version of ibmtape device driver on the Domino windows host that controls
tape drives---6.2.1.5
i have also tried performance tunning parameters but no luck.
DOMTXNGROUPMAX= 64
DOMTXNBYTELIMIT =2097152
dsm.opt
*======================================================================*
* *
* IBM Tivoli Storage Manager for Mail *
* Data Protection for Lotus Domino *
* *
* Sample Options File *
* *
*======================================================================*
COMMMethod TCPip
TCPPort 1500
TCPServeraddress 10.3.3.34
TCPWindowsize 63
TCPBuffSize 32
TXNBYTELIMIT 2097152
　
NODename domino_PDCHM_tdp
PASSWORDAccess Generate
　
SCHEDMODE Polling
*SCHEDLOGRetention 14
*SCHEDMODE Prompted
*TCPCLIENTADDRESS yy.yy.yy.yy
*TCPCLIENTPORT 1502
enablelanfree yes
*lanfreecommmethod tcpip
*lanfreetcpport 1500
　
COMPRESSIon NO
COMPRESSAlways NO
　
　
* Exclude all databases named "db1.nsf" regardless of where they appear
*EXCLUDE db1.nsf
* Exclude all databases that match "help5_*" in the "help" subdirectory
*EXCLUDE help\help5_*
* Include all databases in the "mail6" directory
*INCLUDE mail6\...\*
* Assign all databases that match "*.nsf" in the "mail" subdirectory
* to the "MAILDB" management class
*INCLUDE mail\*.nsf* MAILDB
* Exclude all databases in the "mail6" subdirectory from compression
*EXCLUDE.COMPRESSION mail6\...\*
* Encrypt all databases in the "mail5" directory
*INCLUDE.ENCRYPT mail5\...\*
* The Default include/exclude list follows:
*
* Note: You can back up the log.nsf database but you can only restore
* it to an alternate name.
*
EXCLUDE log.nsf
EXCLUDE mail.box
* Include all transaction logs
INCLUDE S*.TXN
TCPNODELAY YES
Regards
Sandeep jain
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