Re: VMWare file system / database corruption

Scot Kreienkamp wrote:
> On the contrary, we've been running PG in production for years now under VMWare.  Same with MSSQL.  We've never had
anyproblems.  Less so than an actual physical machine actually since we can move the server to different physical
hardwareon demand.  Also makes disaster recovery MUCH easier. 
>
> However, VMWare does have its places.  A high usage database is not one of them, IMHO.  A moderately or less used
one,depending on requirements and the hardware backing it, is often a good fit.  And I agree with Scott about the
snapshots. They do tend to cause temporary communication issues with a running virtual machine occasionally, regardless
ofOS or DB type.  (The benefits outweigh the risks 99% of the time though, with backups being that 1%.)  In my
experiencethe level of interference from snapshotting a virtual machine also depends on the type and speed of your
physicaldisks backing the VMWare host and the size of the virtual machine and any existing snapshot.  I've been told
thatin VSPhere (VMWare 4.0) this will be significantly improved.   
>

does your VMWARE server use NFS to communicate with the disks?   It was
my understanding most folks used SAN logical units for the virtual disks
with VMware ESX, and not NFS/NAS