Configuring a Virtual Server Instance for Quick Recovery

Learning about and using the three disk modes of VMware's GSX server.


Red Hat, Inc.

Jeffrey McDonald is a UNIX systems engineer at a Fortune 500 company based in central California.



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Re: Configuring a Virtual Server Instance for Quick Recovery

Anonymous's picture

I am currently using the VMWARE solution with version GSX2.5 at our company and it works like a dream. We have evolved from the GSX1.0 product and I have to say VMWare has got the right direction on technical and product development.


We have experienced performance increases by making sure you plan your partitions and VM types on each (ex: don't put to many SQL VM's on the same RAID5 partition!) I run RAID1 mirror volumes for VM's that require extra speed and large RAID5 volumes with JFS for reliability and quick recovery on boot.

The Compaq 5302 controller in our server has 128MB of cache and seems to offset the performance overhead JFS journaling creates.

So far we have scaled 2 Compaq Proliant 6500 Quad XEON 500 Mhz GSX VM servers into one Compaq DL380 G3 with hyper threading 2.8Ghz XEONS running RedHat 8.0. We are running 14 VM's concurrenlty now and have plans to grow our VM host environment.

NIC Support from VMWare on Linux is somewhat limited but other than that I can't imagine living with out it!!


Re: Configuring a Virtual Server Instance for Quick Recovery

Anonymous's picture

User Mode Linux (UML) let's you do things like this with it's layered block devices.

Of course, it can run only Linux, and not being a full hardware emulation, the initial instalation of the virtual system can be very complex; but it's worth it to have several servers on the same machine, and being able to 'undo' any mistake gives you a great peace of mind!

Right now i'm trying to install UnitedLinux on UML... it's looking good!