[ADSM-L] Ang: 50Mb restored in 4.18h....
2010-09-07 03:39:09
Hi there
To begin with, TSM as a product has no issues with fast restores. If the data
isnt placed correctly, restores might slow up though.
- Did you restore files or files and directories?
- Are you storing directories on tape or in a dedicated diskpool using DIRMC?
- Considering it was only 117 files, the average sice was 427KB. Are you using
collocated tape pools, or is there a chance the files was spread across the
tape?
When a restore takes this amount of time for just a small amount of size/files,
it usually points towards files / directories being spread across the tape.
Usually when doing restores of large fileservers (which I asume this is)
sorting out what needs to be restored on the TSM server-side is what takes
time, but since you got to "Waiting for files" pretty fast, I'd say you have
files/directories spread widely across the tape.
Best Regards
Daniel Sparrman
-----"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> skrev: -----
Till: ADSM-L AT VM.MARIST DOT EDU
Från: Niklas Lundström <niklas.lundstrom AT SWEDBANK DOT SE>
Sänt av: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
Datum: 09/07/2010 07:02
Ärende: 50Mb restored in 4.18h....
Hello
I just did a restore of 50Mb and it took 4h 18min
If it had been 50Gb I wouldn't complain
Total number of objects restored: 114
Total number of objects failed: 0
Total number of bytes transferred: 50.99 MB
Data transfer time: 9,426.15 sec
Network data transfer rate: 5.53 KB/sec
Aggregate data transfer rate: 3.36 KB/sec
Elapsed processing time: 04:18:55
The server has a lot of files, almost 7 million including the copypool. The
TSM DB is really big, 180Gb and 94% full.
TSM Server 5.5.4.
Does anyone have a clue of why the restore took so long?
It found what volumes to mount fast, but then the client was "Waiting for files
from the server....."
People here are complaining about TSM and that the restores takes long time
and it's hard to defend it when the restore takes so long...
Med vänlig hälsning
Niklas Lundström
Niklas Lundström
Storage Administrator
Swedbank AB (publ)
105 34 Stockholm
Telefon: +46 (0)8 5859 5164
Mobil: +46 (0)70 24 76 345
Vi ber dig lägga märke till att detta e-postmeddelande kan innehålla
konfidentiell information.
Om du felaktigt blivit mottagare av detta meddelande ber vi dig informera
avsändaren om felet
genom att använda svara-funktionen. Vi ber dig också att radera
e-postmeddelandet utan att
skicka det vidare eller kopiera det.
Trots att vi intygar att e-postmeddelandet och eventuella bilagor inte
innehåller virus och andra
fel som kan påverka datorn eller IT-systemet där det mottages och läses, öppnas
det på
mottagarens eget ansvar. Vi tar inte på oss något ansvar för förlust eller
skada, som har uppstått
i samband med att e-postmeddelandet mottagits och använts.
_________________________________________________________________________________
Please note that this message may contain confidential information. If you have
received this
message by mistake, please inform the sender of the mistake by sending a reply,
then delete
the message from your system without making, distributing or retaining any
copies of it.
Although we believe that the message and any attachment are free from viruses
and other errors
that might affect the computer or IT system where it is received and read, the
recipient opens the
message at his or her own risk. We assume no responsibility for any loss or
damage arising from
the receipt or use of this message.
|
|
|