Hi, How can I find out which nodes are using DIRMC easily, I have a DIRMC primary tape pool DIRTAPEPOOL ?
Thanks Bill -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Andrew Raibeck Sent: 15 October 2009 11:22 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] DIRMC It really depends on your retore needs. Directories are a special case of "small files". Restore performance from tape, especially for lots of small files, will vary depending on whether you collocate by file space or node, or if you don't collocate at all; plus how well tapes are managed via reclamation. Storing the directories on disk will likely benefit most those who do not collocate at all. If you back up solely to disk, then DIRMC is probably not of significant value. As with anything else, your mileage may vary. Pop quiz: "TSM is designed to always restore directories first, then the files." True? or False? Answer: FALSE. TSM restores objects in such a way that it tries to optimize tape mounts. If a file is restored before its parent directory and the directory does not exist, then TSM will create the directory (using default attributes) and restore the file therein. Assuming the parent directory is included in the restore specification, the directory will be restored later. Note: "BOTH" is also an acceptable answer if you qualified it thus: Back in the early days of TSM, when it was called ADSM, the product did indeed restore directories first, then the files. At the time, the major impacted OS was NetWare because its directories were backed up to storage pools rather than contained in the TSM server database. So DIRMC was helpful for NetWare. If memory serves, Windows NT was not supported initially by ADSM (probably because the OS wasn't yet GA when ADSM was being developed), but DIRMC eventually became useful for the Windows NT NTFS file system. Andy Raibeck IBM Software Group Tivoli Storage Manager Client Product Development Level 3 Team Lead Internal Notes e-mail: Andrew Raibeck/Hartford/i...@ibmus Internet e-mail: stor...@us.ibm.com IBM Tivoli Storage Manager support web page: http://www.ibm.com/software/sysmgmt/products/support/IBMTivoliStorageManager.html The only dumb question is the one that goes unasked. The command line is your friend. "Good enough" is the enemy of excellence. "ADSM: Dist Stor Manager" <ADSM-L@VM.MARIST.EDU> wrote on 10/15/2009 05:02:34 AM: > [image removed] > > DIRMC > > Bill DOURADO > > to: > > ADSM-L > > 10/15/2009 05:03 AM > > Sent by: > > "ADSM: Dist Stor Manager" <ADSM-L@VM.MARIST.EDU> > > Please respond to "ADSM: Dist Stor Manager" > > Hi All, > > Is DIRMC still useful ? Or should I ditch it. > Windows clients only. > Storage Management Server for Windows - Version 5, Release 4, Level 2.0 > > Many Thanks > > Bill Dourado