Yep, that is what subfile backup was designed for - reduces the amount of data to be sent over the network for backup, on the assumption that laptops are usually using a slow link. (Although I have found there are cases where subfile backups work great for desktops of all kinds, not just laptops. And we have done backups of remote clients over slow links WITHOUT subfile turned on. Just depends whichever works best for you.)
There is a white paper on the Tivoli web site that explains how to implement: http://www.tivoli.com/products/solutions/storage/storage_related.html#white Pick the .pdf file titled "Adaptive Subfile Differencing". It's pretty simple, just a couple of parms to set in the dsm.opt file (or a client option set on the server). We are running 400 Win2K clients using the 4.2.0 client, with subfile turned on for all files on the drive. Have never had a problem with it, and have successfully done several real bare-metal restores. (Have never tested subfile with a 4.1.x client). Only gotcha is that you may want to think twice if you are NOT using collocation. With subfile turned on, for every file you want to restore you have to restore 2 files: the base file and the delta file. If you are using collocation you won't notice; if you aren't using collocation that means 2 tape mounts instead of 1. Hope that gets you started.. ************************************************************************ Wanda Prather The Johns Hopkins Applied Physics Lab 443-778-8769 [EMAIL PROTECTED] "Intelligence has much less practical application than you'd think" - Scott Adams/Dilbert ************************************************************************ -----Original Message----- From: Gary Swanton [mailto:[EMAIL PROTECTED]] Sent: Monday, March 18, 2002 4:32 AM To: [EMAIL PROTECTED] Subject: SUBFILE BACKUPS FOR LAPTOPS Hi TSMers, I have been asked to investigate whether or not TSM could be used for our laptop and remote access users. Am new to TSM but have come across the term SUBFILE BACKUPS, would this method be suitable for such users. Appreciate any advice available. Regards Gary Swanton [EMAIL PROTECTED] [EMAIL PROTECTED]
