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Need advice on which RAID configuration to use.. - Page 2

post #11 of 14
@OP

If I remember rightly, the Intel RST software allows certain RAID levels to be reshaped. Once you copy all the data from the single disk to the RAID 1 array, you may be able to reshape the array by adding the single disk to the array, i.e go from RAID 1 to RAID 5.

Unfortunately, I can't remember the link which had a table of all of the reshape options.
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post #12 of 14
Thread Starter 
Quote:
Originally Posted by parityboy View Post
@OP

If I remember rightly, the Intel RST software allows certain RAID levels to be reshaped. Once you copy all the data from the single disk to the RAID 1 array, you may be able to reshape the array by adding the single disk to the array, i.e go from RAID 1 to RAID 5.

Unfortunately, I can't remember the link which had a table of all of the reshape options.
Are you saying I can add just ONE disc and get RAID 5?

I don't know what Intel RST is, so, if you can help me more on that I'd greatly appreciate it..

Also, what will RAID 5 do for me, and if one disc fails, where would I be at then?
Edited by _GTech - 2/27/11 at 3:21pm
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post #13 of 14
Quote:
Originally Posted by _GTech View Post
Are you saying I can add just ONE disc and get RAID 5?

I don't know what Intel RST is, so, if you can help me more on that I'd greatly appreciate it..

Also, what will RAID 5 do for me, and if one disc fails, where would I be at then?
I don't know where you got the idea that RAID 5 requires 4 disks. It only requires 3

http://en.wikipedia.org/wiki/RAID

Basically, two disks give you a performance boost while the 3rd allows for parity to be maintained. Furthermore, the array has a fault tolerance of 1 disk. As it is highly improbable that you will experience both your drives failing simultaneously. This is ideal for home solutions. The array can be reconstructed if a drive fails using the parity information stored as meta data.
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post #14 of 14
Quote:
Originally Posted by _GTech View Post
Are you saying I can add just ONE disc and get RAID 5?

I don't know what Intel RST is, so, if you can help me more on that I'd greatly appreciate it..

Also, what will RAID 5 do for me, and if one disc fails, where would I be at then?
Basically yes, you start with a RAID 1 array (two drives), add another drive as a spare drive, then tell the software to reshape the array to RAID 5.

RST is Rapid Storage Technology - the drivers and application software for the Intel ICHxR family of storage controllers. I found the table again.

With RAID 5, if one drive dies, you keep on truckin'. The difference from RAID 1 is that with RAID 5 the data is striped across the drives, which means increased performance. However, when a disk fails, get it replaced as soon as possible or you might find yourself crying some very long tears.
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