TSM does not use the traditional rotation of tapes as you have discovered. TSM is about retaining the objects as the admin sees fit. Tapes are merely storage. This approach has its ups and downs. I keep 60 days and 15 versions and only use 3 times the storage as I am protecting. When we were running BackupExec we were 9:1. I have 16 tape drives and 3TB of disks servicing 300 backup streams. The flip side as you have found is many tapes are needed for restores. I typically allocate 4 or 5 drives if the restore is big and important. NBU would do nicely with 1.
If you want you can drop me a note off-line and I will help if I can. By the way, the manuals really are fantasic... Andy Huebner -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of ego3456 Sent: Tuesday, August 10, 2010 1:28 PM To: [email protected] Subject: [ADSM-L] NBU guy in TSM shop and I need help thanks to all that responded, I'm aware this is a technical forum, and I'm also aware it is populated by mostly TSM admins with a bent toward fighting for its continued use. to the point of the post however, we have more than one management class, and more than one policy, I'm just trying to discern what most of this all means and how one tweak effects another. I guess the question is more of a governance question than a strategy question as once i understand the governance i can implement the strategy. Please know that I'm not new to backup, I've been doing them on an enterprise level for over 10 years. I'm only new to TSM and while the responses here have been very helpful in guiding me to see what each field does, the question has now been some what mutated to more about how much of a rework is it going to be to set the course straight, and is it possible at all with the existing hardware. if it is a lot of work, then I'm going to rip it out and do what I'm most familiar with, if it is going to take a significant economic investment, then I'm going to rip it out and do what I'm familiar with. if it is a matter of click here and go, then I'll keep what we have. My guess is that I'm ripping it out. for me, personally i know NBU backwards and forwards, have several custom scripts, and don't have any issues with backup windows or network throughput that can see benefit from TSM. in short, there doesn't seem to be a quick fix for this, and if I'm going to swim in a murky pool, I'll choose the pool in my back yard over the one down the street. Thanks all for your help, -eric +---------------------------------------------------------------------- |This was sent by [email protected] via Backup Central. |Forward SPAM to [email protected]. +---------------------------------------------------------------------- This e-mail (including any attachments) is confidential and may be legally privileged. If you are not an intended recipient or an authorized representative of an intended recipient, you are prohibited from using, copying or distributing the information in this e-mail or its attachments. If you have received this e-mail in error, please notify the sender immediately by return e-mail and delete all copies of this message and any attachments. Thank you.
