Hi, I'm building a new system most likely based on an Asus P5W or P5B (still waiting to see which is better). Both have the Intel chipset that supports a SATA RAID 5 setup.
I would like to get 3 really good SATA drives and build a RAID 5 for my main storage. I'm sick of drives crashing and all of the hassle it brings, especially with ever-increasing storage sizes.
- My question is - would I need to put my operating system boot drive on a seperate drive, or could it be on a 'different partition' on the same RAID array?
I read something about the Intel chipset allowing multiple RAIDs across the same set of discs.
- Is this a similar concept to multiple partitions on a single drive?
- If I'm planning on doing audio recording or video to the main RAID 5 storage area, what would be the performance hit of having the boot drive be on either the same RAID, or a seperate RAID across the same discs?
- If, for performance sake, I make the boot drive a separate drive, can I setup a RAID 1 concept across 2 equal partitions on 1 drive? I don't want to lose the data on my boot drive either, but 5 drives in my machine is just too much (3 for storage, 2 for boot disc)!
THANKS for any help! I'm a bit new to RAIDs and just want to make sure I understand things correctly. I know the usual way to do audio is to have a separate drive for audio from the main boot drive.
>multiple RAIDs across the same set of discs // similar concept to multiple partitons
Normal RAID works on a disk-by-disk basis - in its simplest form you stick two disks together and mirror the data.
Linux (& Windows) software RAID, and the Intel chipset RAID allows you to, say, take two 80Gb drives, split each one into 2 40Gb partitions, and then RAID 1 two of the partitions for redundancy and RAID 0 two of the partitions for speed.
You end up with;
Disk 1 Partition 1 is in a RAID 0 with Disk 2 Partition 1
Disk 1 Partition 2 is in a RAID 1 with Disk 2 Partition 2
It's a bit more flexible than that, of course, but that's the basic idea.
>planning on audio recording or video
I wouldn't use RAID 5 if I was doing audio recording or video. The write overhead is far too big (because of the Xor calculations).
I would have 2 drives in a RAID 0 for your audio and video work, and 2 drives in a RAID 1 for your O/S and "data storage".
>RAID across 2 partitions on 1 disk.
Yes, you can do this. It's a pretty dumb idea! There's no hardware redundancy - so if the disk fails you still lose everything. (instead of "Redundant Array of Inexpensive Disks" you would have a "Non-redundant non-array of One Inexpensive Disk". So possibly a NOID).