Hi there Henrik I asked a few questions to try to get a pointer.
Concerning my point on TSM performance, Nicklas was the one saying he had the organisation complaining on TSM for poor performance. Perhaps you should read his first message, and you'd understand why I said as I said. Scroll down this message and you will know what I'm talking about (last line) Regards Daniel -----"ADSM: Dist Stor Manager" <[email protected]> skrev: ----- Till: [email protected] Från: Henrik Vahlstedt <[email protected]> Sänt av: "ADSM: Dist Stor Manager" <[email protected]> Datum: 09/07/2010 09:44 Ärende: Re: Ang: 50Mb restored in 4.18h.... Hi, I am sure everything is configured correct at Niklas site. Test classic vs nqr restore and you will be suprised. //Henrik -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of Daniel Sparrman Sent: den 7 september 2010 09:40 To: [email protected] Subject: [ADSM-L] Ang: 50Mb restored in 4.18h.... 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" <[email protected]> skrev: ----- Till: [email protected] Från: Niklas Lundström <[email protected]> Sänt av: "ADSM: Dist Stor Manager" <[email protected]> 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. ------------------------------------------------------------------- The information contained in this message may be CONFIDENTIAL and is intended for the addressee only. Any unauthorised use, dissemination of the information or copying of this message is prohibited. If you are not the addressee, please notify the sender immediately by return e-mail and delete this message. Thank you
