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From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
To: "Vladislav V. Prodan" <universite@ukr.net>
References: <4DD638C1.7080007@ukr.net>
Date: Sat, 21 May 2011 11:38:57 -0400
In-Reply-To: <4DD638C1.7080007@ukr.net> (Vladislav V. Prodan's message of
	"Fri, 20 May 2011 12:47:45 +0300")
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Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org>
Subject: Re: Tell a minimum requirement for RAM for virtual machines
	(virtualbox)
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"Vladislav V. Prodan" <universite@ukr.net> writes:

> Tell choice OS (8.2, 8.2-CURRENT or 9.0-CURRENT, FS (UFS or ZFS) and
> the minimum amount of RAM for use in such schemes:
> 1) the interaction of multiple routers with established quagga (bgpv4,
> bgpv6, ospf)
> 2) the work of two different modes of MYSQL replication servers/clusters.
> 3) backup zfs partitions/snapshots to a remote server
>
>
> Host machine - win7 64x with 6 GB of RAM

That's a varied enough workload that I think you'd have to try it.  
ZFS has problems with low-memory conditions, 
so you might want to avoid it for this application.
I don't think the OS version will matter much, but 
I'd be tempted to go with CURRENT, especially if you use ZFS.

Good luck.