Re: [BackupPC-devel] Backup PC 4.0 Request

[Les M. <les...@gm...>]

On 3/4/2011 1:56 PM, Dan Pritts wrote:
>
> On Mar 2, 2011, at 10:25 PM, David Birnbaum wrote:
>
>> Craig,
>>
>> I realize a lot's gone into your thinking for 4.0 - I was wondering if it would be possible to offer some sort of "cost" parameter to the host configuration.  Specifically, we have local hosts (backing up via a
>
> Along similar lines, we backup a lot of VMware VMs as well as physical hosts.
> I expect my backup hardware could back up concurrent clients, but it would hammer the
> vmware storage if we did more than a couple of *those* concurrently.
>
> We can't be the only ones with this problem.
>
> In practice we just keep the concurrency down and we make it fit in our backup window,
> but that won't scale infinitely.

The concurrency control really needs some kind of 'grouping' concept to 
tie physical constraints together.  For example, to group VM guests and 
the common host, or to group remote systems sharing limited WAN 
bandwidth or a router link you don't want to swamp.  The idea would be 
to have a setting to limit concurrency within a group while continuing 
to run members outside of the group up to a different limit.  Amanda had 
something like that related to network segments but I've forgotten how 
it was used.

-- 
   Les Mikesell
    les...@gm...