What do use for a reuse delay? How many pending volumes do you average?
H. Milton Johnson -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Rushforth, Tim Sent: Tuesday, September 21, 2004 1:00 PM To: [EMAIL PROTECTED] Subject: Re: D2D on AIX Eliza: At the Disk only Backups Technical Exchange, IBM recommended 2-4 GB volume size. (This was stated by the presenter, it was not written on the PDF presentation.) We started with 25 GB volumes and have now switched to 4 GB volumes. Using smaller volume sizes allows a better utilization of space and increases restore performance with multi-session restore. (Also helps eliminate contention if multiple clients are restoring from the same volume) Tim Rushforth City of Winnipeg -----Original Message----- From: Eliza Lau [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 21, 2004 11:20 AM To: [EMAIL PROTECTED] Subject: Re: D2D on AIX Eric, What is the recommended volume size. I have seen someone mentioned 5G, but then the number of volumes will explode from about 800 (current # of 3590 primary tapes) to thousands. How about keeping the staging space so clients backup to staging then migrate to FILE volumes. Then every volume will be filled up. Eliza > > Hi Eliza! > You do want several smaller files, rather than a few very large files > because each client session will allocate a volume. File volumes > cannot be used concurrently by more than one session. > Kindest regards, > Eric van Loon > KLM Royal Dutch Airlines > > > -----Original Message----- > From: Eliza Lau [mailto:[EMAIL PROTECTED] > Sent: Monday, September 20, 2004 19:11 > To: [EMAIL PROTECTED] > Subject: D2D on AIX > > > Our 3494 with 3590K tapes in 3 frames is getting full. Instead of > adding another frame or upgrading to 3590H or 3592 tapes we are > looking into setting up a bunch of cheap ATA disks as primary storage. > > The FILE devclass defines a directory as its destination and JFS2 has > a max file system size of 1TB. Does it mean the largest stgpool I can > define is 1TB? > > My Exchange stgpool alone has 8TB of data. Do I have to split it up > into 8 pieces? > > server: TSM 5.2.2.5 on AIX 5.2 > database 90GB at 70% > Total backup data - 22TB > > Eliza Lau > Virginia Tech Computing Center > [EMAIL PROTECTED] > > > ********************************************************************** > For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. > ********************************************************************** >
