Hi David Hmmm... Thanks. This is very interesting. And also shoots my SLA's right out of the planet into a Galaxy unknown to us! Cannot understand how we can recover a system is 2 days, when it takes double to backup completely! Have also mixed with Multiplexing, and no joy! I dont think FlashBackups will help either, as its an array of small - medium - large files. Oh dear :-( Si
________________________________ From: Spearman, David [mailto:sp...@co.henrico.va.us] Sent: Wednesday, September 15, 2010 7:05 PM To: WEAVER, Simon (external); veritas-bu@mailman.eng.auburn.edu Subject: RE: Real World NBU Buffer settings Win2k3 Simon, For what it's worth 64kb buffer size 128 buffers Multiplex 6 LTO4 10GB backbone/2Gb FC I have played around with all sorts of buffer sizes but in our mixed environment 64 works best. But 4 days for 1.7TB seems more like the norm to me. We have several servers verging on 1TB that can take 36 hours. David Spearman County of Henrico From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of WEAVER, Simon (external) Sent: 15 September, 2010 02:00 PM To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Real World NBU Buffer settings Win2k3 Hi All Anyone got any real world experience on buffer settings: scenarion: Win2k3 San Media, connected to 2GB Fabric attached 8 LTO4 Drives. Due to drive availability, Multiplexing onto one drive. Main problem: One volume (1,7tb in size) takes over 4 days to fully complete. Got the Tuning Guide and Technote 244602, but I tried some settings, only to find the backup would not even mount tape correctly. So back to "no" settings at the mo. Volume are generic files/folders, mixture of large and small sizes. But 1.7TB's in my view should be done quicker. Also Data is compressed. Regards Simon This email (including any attachments) may contain confidential and/or privileged information or information otherwise protected from disclosure. If you are not the intended recipient, please notify the sender immediately, do not copy this message or any attachments and do not use it for any purpose or disclose its content to any person, but delete this message and any attachments from your system. Astrium disclaims any and all liability if this email transmission was virus corrupted, altered or falsified. -o- Astrium Limited, Registered in England and Wales No. 2449259 Registered Office: Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, England This email (including any attachments) may contain confidential and/or privileged information or information otherwise protected from disclosure. If you are not the intended recipient, please notify the sender immediately, do not copy this message or any attachments and do not use it for any purpose or disclose its content to any person, but delete this message and any attachments from your system. Astrium disclaims any and all liability if this email transmission was virus corrupted, altered or falsified. -o- Astrium Limited, Registered in England and Wales No. 2449259 Registered Office: Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, England
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