Re: we need more tapes in the next pool after replacing a primary disk pool with a primary sequential pool

2010-12-07 Thread Maurice van 't Loo
Gary is right, if you have enough diskspace, migration is not needed, you can also use move data or move nodedata to migrate the data. But if you use the first stgpool on disk, just to migrate all data to tape, diskpool is much easier, faster and as you noticed cheaper than a filepool. A diskpool

we need more tapes in the next pool after replacing a primary disk pool with a primary sequential pool

2010-12-06 Thread TSM
Hello, We replaced a primary disk pool on fc disks with a bigger primary sequential pool on sata disks. The primary sequential pool on disk is migrated to a primary pool an tape using 3 processes. Both pools are collocated by node. Now we need more tapes in the next pool because the migration

Re: we need more tapes in the next pool after replacing a primary disk pool with a primary sequential pool

2010-12-06 Thread Lee, Gary D.
Give the move data command a try. This will move data from one volume in a sequencial pool to another. Gary Lee Senior System Programmer Ball State University phone: 765-285-1310 -Original Message- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of TSM Sent:

Re: we need more tapes in the next pool after replacing a primary disk pool with a primary sequential pool

2010-12-06 Thread Mehdi Salehi
What is the tape drive model? Data transfer rate of LTO4 drives is about 120MB/s, so three drives can carry 3 x 120 = 360 MB/s. (This can be higher with LTO5 or new IBM tape drives). I don't know your SATA disk configuration, but you might not gain performance by three parallel migration