We are in the process of making some major changes to our TSM systems. part if this is moving our primary tape storage pools to new 3584 libraries (from 3494). We just finished moving the first of of two big pools. I thought I'd share how this worked.
We have a primary tape pool in our "TSM1" instance. that used 3590 drives in a 3494 library. The tapes were a mixture of 40 and 60gb tapes - more 60 than 40. The origional plan was to just to do the normal process . . . - setup new pool - change NEXTPOOL from the staging area to point to the new pool - change the batch scripts for the copy pools - add NEXTPOOL to the oritional pool to point to the new pool - fire up migration and let it run After some playing around, I decided not to use migration to move the data to the new pool. Since this would be running for a long time, I needed more control so as to not tie up all the tape drive resources. My solution was to script a movedata process that would run as many movedata cmds as it could, yet still leaving tape drives free. The script worked off a parm file that tells it how many movedata's to run concurrently and how many free drives there had to be to start another movedata. At times I had 8 movedata's running concurrently, and at other times (mostly during the morning) no movedata's running. This turned out to work very well. Below is the data about the migration . . . . . ===================================================== 114TB/1855tapes moved in 26 days. New Pool: BACKUP-PRI-3584GOTAPE Total tapes 221 (500gb cartridges) Full 201 Filling 20 maxscratch 250 Colocation was OFF during the migration. Old Pool: TAPEPOOL Total at start 1839 (on 5/2) Data to move 114TB (on 5/2) Tapes moved 1855 (on 5/29) Tapes copied by day: May 02 = 33 May 03 = 58 May 04 = 58 May 05 = 56 May 06 = 47 May 07 = 78 May 07 = 59 May 08 = 80 May 09 = 60 May 10 = 49 May 11 = 77 May 12 = 59 May 13 = 49 May 14 = 90 May 15 = 99 May 16 = 96 May 17 = 81 May 18 = 112 May 19 = 74 May 20 = 70 May 21 = 108 May 22 = 99 May 23 = 104 May 24 = 94 May 25 = 59 May 29 = 6 total = 1855 ----------------------------------------- The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message.