I'd like to get a better understanding of the commvault client-side dedupe. I've been using it on 10 of my remote clients on a new Storage Policy I created, but the answers I want are either not in the documentation, or not easily found.
Here are some questions off-hand (which will lead to more):
- Right now the Storage Policy has 1 disk copy, no aux copies. If I create an Aux copy or a Selective Copy for fulls, (because I want to change the primary copy's retention rules down from 30 days/1 cycle to 7 days 1 cycle) will that worsen my deduplication compression? i.e. it will no longer use those backups that were moved off to tape to find redundant blocks for deduplication.
- Is there any way around having to do a true full backup when going to a deduplication storage policy? I mean, a full is fine, but is there a way to use the data in an old storage policy to seed an existing deduplication storage policy? There's a page in the documentation called Seeding the sp, but it involves using USB drives and a bunch of pain.
My problem is many of these backups, if I had to do a real full backup with nothing being dedupe'd out, could take weeks to complete as I have a lot of servers with very slow network connections (or Frame Relay, because we party like it's 1993 here).
Most of these backups are vmware where we're using the Virtual Server Agent to do a VMware snapshot.
- I have 5 media agents. When I create a storage policy for deduplication which uses my Global Deduplication policy (which sits on a media agent specifically to hold the global dedupe database), I can only have 1 of my media agents as a data path. I cannot add all 5. What's the point of having Gridstore if I can't fail over? It's not like the deduplication stores are sitting on the media agents that move the data. It's on my ddb server. This is a severe pain in the ass because that means if I want to load balance, I would need to create a storage policy for each media agent and then manually divide up the servers using Dedupe among them evenly.
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