Create 1 large or 2 small ramdisks?

I have a Dell R420 with a PERC H310 RAID controller.  This controller allows me to create a virtual disk using all available space in the RAID 5 array or it allows you to build two virtual disks that divide the space of matrix RAID 5.

If I create a virtual drive and install Windows 2008, this represents for the operating system as a physical drive.  I could then use the operating system to partition the space a drive C and a d drive (both on the same 'physical' disk).

If I create two virtual disks and install Windows 2008, this represents for the operating system as two physical disks.  I could put the C drive on the first 'physical' disk and drive D on the second disc of the "physical".

One of these options are better than other performance or another perspective, or they are substantially the same?

Herbhoakes,

From the performance point of view the best option is not to divide the virtual drives at the controller level, but instead create 2 tables, a 2 disk raid 1 for the OS to use, and then create a raid 5 with the rest of the readers. It's all depends on how much you have readers. Once this is done you can place several PARTITIONS on the virtual disk. So you have intact berries with several partitions on it, instead of a virtual drive from split with individual partitions on this subject. With splitting the table at the level of the controller also risk that you have data loss.

If you only have the Raid 5 then you can partition it in different operating system disks, but it is not recommended to divide the regulator.

Tags: Dell Servers

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