Hi,

In case we're still talkin' about ESX, there's a wonderful stuff called VCB 
(vmware consolidated backup) from VMWare.
that can make live snapshot (no VM reboot)
then can make those snapshots available on the Virtual Center.
It results a kind of really useful "backup proxy" w/ less I/O and better 
"calibrated" network load. 
As i mostly use FreeBSD guests, i only backup full hosts. But it might be done 
diferently w/vmtools (according to the docs).
Of course freely available from vmware ressources =]

Regards,


--
Regis A. Despres




Gregory Orange a écrit :
| 
| I guess we cheat - we pause the VM for the duration of the backup, and 
| simply back up the host. This results in a complete system backup of the 
| VM, and we get full speed backup of a few large files each night. We can 
| do this happily because none of our VMs are very large - 10GB at most - 
| so not too much tape space is used. Our large data set (~3TB) is not 
| virtualised.
| When the host is upgraded, or the VMs are moved somewhere other than 
| that SLES9 box[1], we'll have a newer version of LVM such that we can 
| pause the VM, create an LVM snapshot, resume the VM, perform a raw 
| backup of the snapshot, then delete the snapshot. Much less downtime for 
| the VM.
| 
| [1] For some reason, we can't currently delete LVM snapshots without a 
| lot of work including host reboots. This would require huge disk space 
| wastage or unacceptable reboots!
| 
| Brian Debelius wrote:
| > I've never achieved more then about 10MBs from Server running under SUSE 
| > 9.  I am moving things to ESX right now.  I have not benchmarked the 
| > raid yet, but a single disk was around 45MBs
| > 
| > Keith Sudbury wrote:
| >> Hi Everyone,
| >>
| >> I have a CentOS box running a LTO-3 SCSI drive and I am currently 
| >> getting abour 7 / 8 MB/s from a Windows 2003SBS machine running on the 
| >> CentOS box. This is the only VM on the box and the server has no load.
| >>
| >> The box is a new Dell server of reasonable spec and has the Vmware is 
| >> running in "bridged" mode for networking, the drive are SATA and 
| >> confisured in a RAID5 (with a real hw card). I'm not expecting a rocket 
| >> but 7mb/s ???
| >>
| >> I am wondering if any of you have experianced any thing simular?
| >>
| >>
| >> Many Thanks
| >>
| >>   
| > 
| > 
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| 
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|      System Administator            Fax: +61 8 9387 6686
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