You could attach the TSM server to the clustered filesystem and allow it to perform the backup from its own client. This might get you better bandwidth if it's done properly.
MEMORYEFFICIENT YES will scan one directory at a time per producer thread. This keeps from eating up all system memory, at the expense of some scan speed. Memory usage is 400-1200 bytes per file in the list to be backed up. RESOURCEUTIL 10 is the limit and gets you only 4-6 producers. If you have good bandwidth, and a large number of execution threads, it may be beneficial to run parallel backups. Parallel backups can be used to spread the workload across more threads and/or more systems. virtualnodename or asnode can be used if necessary. VIRTUALMOUNTPOINT can be used to get around scanning areas which should not be backed up rather than excluding those areas. To prevent retransmits, you could perform backups of a replica or a snapshot. Incremental by Date is valuable for your busy days. It won't expire files, but it saves a bunch of time scanning. Limitations for path/filename depth: AIX HP-UX Solaris: File_space_name 1024 Path_name or directory_name 1023 File_name 256 Linux File_space_name 1024 Path_name or directory_name 768 File_name 256 Windows XP/2000/2003 File_space_name 1024 Path_name or directory_name 248 File_name 248 With friendly regards, Josh-D. S. Davis ________________________________ From: James R Owen <jim.o...@yale.edu> To: ADSM-L@VM.MARIST.EDU Sent: Tue, January 26, 2010 5:09:53 PM Subject: [ADSM-L] ?anyone using TSM to backup Panasus PanFS? Yale uses Panasus PanFS, a massive parallel storage system, to store research data generated from HPC clusters. In considering feasibility to backup PanFS using TSM, we are concerned about whether TSM is appropriate to backup and restore: 1. very large volumes, 2. deep subdirectory hierarchy with 100's to 1000's of sublevels, 3. large numbers of files within individual subdirectories, 4. much larger numbers of files within each directory hierarchy. Are there effective maximum limits for any of the above, beyond which TSM becomes inappropriate to effectively perform backups and restores? Please advise about the feasibility and any configuration recommendation(s) to maximize PanFS backup and restore efficiency using TSM. Thanks for your help. -- jim.o...@yale.edu (w#203.432.6693, c#203.494.9201, h#203.387.3030)
