Virtual OS performance in raid 0

[Boostage]

Quick question..

I know that running a virtual OS on the same drive as the host OS. impacts performance negatively. but what if its in Raid 0, vs running it on a separate single disk?

 

[vsboxerboy]

What are the disks in question? I think there are a lot of variables, such as how much disk I/O is happening in both the host and guest OS to be able to give a straight answer to this question - but it is a good question.

If there is heavy disk I/O in the host and guest, I would say that 2 separate disks would win.

If only one at a time is heavy I/O RAID 0 should win (same goes for if neither are heavy)

*disclaimer* I'm not an expert

 

[Boostage]

have not purchased the disks' yet but I am sure I'm getting two 750GB barracuda's I know two WD 640gb Caviars would be a little faster but I think the little extra space of the Cuda's are a good compromise.

 

[taqueso]

If you are going to be using both OSes heavily, simultaneously, you would want to use separate drives for each. But if you will have times where you are only using 1 OS, you would get all the benefits of the RAID 0.

Another consideration is that under RAID-0, if one drive fails you lose everything. With separate disks, you would only lose half.

Personally, I would choose RAID-1. Between your two choices, RAID-0.