Here is an excerpt from a TSM-Data Domain best practiced doc from EMC. "? ?directory=/tsm/ddr/tsm_dir1,/tsm/ddr/tsm_dir2, /tsm/ddr/tsm_dir3? This will allow the TSM server to round robin incoming data streams over each network link. There is no configuration control over path preferences, and in the event the link of a given path is not available, TSM will skip that path and open the next data stream on the next available path."
The context for this was to mount different directories over different network links to balance the link utilization. It indicates it is round robin, but I don't know how authoritative this is. I couldn't find any information about it in the TSM manuals although my link utilization is even, which would confirm that it is round-robin. You could remove the full directories from the device class definition. This won't prevent reading volumes already created, it will only prevent new scratch volumes from being created there. Then you can add it back in later as the data expires and space clears up. Regards, Shawn ________________________________________________ Shawn Drew Internet [email protected] Sent by: [email protected] 11/11/2011 03:00 PM Please respond to [email protected] To ADSM-L cc Subject [ADSM-L] Dev Class type FILE with multiple directories If you have a dev class of type FILE with multiple directories, how does TSM determine which dir to create a new volumes in? I've checked everywhere I can think of and the most I can find is comments that TSM is free to pick any dir to create a new scratch vol in. Assuming lots of free space in multiple directories specified for one dev class type file, how does TSM pick which dir to create a file dev in? What I'm interested in is one of those "what if" questions. If you have a file dev class (NFS) on a dedup box and its getting full. So you purchase a new box, set it up, and add it to the devclass as an extra directory. You now have two directories. If one is full TSM will use the other, but if both have freespace I'm curious how TSM decides which to use. Just curious . . . Rick ----------------------------------------- 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. This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Please note that certain functions and services for BNP Paribas may be performed by BNP Paribas RCC, Inc.
