[windows2000] DFS cpu/disk overhead
- From: "Brian Anderson" <BAnderson@xxxxxxxxxx>
- To: "Win2k List (E-mail)" <windows2000@xxxxxxxxxxxxx>,"Win2k List (E-mail 2)" <windows2000@xxxxxxxxxxxxx>
- Date: Wed, 28 Jan 2004 13:40:24 -0600
was wondering if anyone has some experience using DFS to syncronize directories
across a pair of machines. The issue is that each of these folders has about
12GB of small (150K or less) document files. In one of our out of state server
farms, I am adding a new file server to take the main storage of the documents
off of the primary database server, where they are sitting now. We basically
need an instant failover for the documents in case the server decides to die.
What I'm wondering is does anyone know how the sync operation within DFS
actually works (or can point me to) an in depth explanation on how it works? Is
it a byte for byte copy, or does it just monitor changes between the 2 folders
and copy appropriately. I know there are commercial applications that look at
just the file deltas and copy appropriately, but if DFS will work, I'd rather
implement that solution. I've been looking around on the net and I can't really
come up with anything useful.
Currently, there is some freeware app that a predecessor of mine installed that
basically does a software RAID1 across the shares. It's not as CPU and disk
hungry as the original robocopy solution, but it still eats up about 25-35%
usage at times on an 8-way xeon box.
I'm heading down in a few weeks to set this up, and I need to have a plan of
action in place beforehand. Any help would be greatly appreciated
thanks,
-brian
Brian Anderson
Serapis Support
Correctional Medical Service
Office (314)919-9868
Mobile (314)239-1398
banderson@xxxxxxxxxx
http://www.serapisonline.com
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