RAID 5 Initializing? WTF??

Dempsey · 18 Nov 2006 at 20:29

what does this mean and whats the impact on performance

Dempsey · 18 Nov 2006 at 23:01

rpstewart said:
RAID5 stores its data across multiple disks along with parity information so that if one drive fails all the data is accessible and the failed drive can be replaced and the contents rebuilt. To do this the array needs to be initialised, either offline (no access) or online (user access allowed) before it's fully fault tolerant..

I'm guessing that your array is initialising online in which case there will be a degredation in performance for a few hours depending on the size of the array while all the parity blocks are written out. Any user requests to the array will have to contend with this process.

Your best bet is probably to leave it churning overnight.

What actually being done in the intialization

Is offline quicker and how do I do that?

Its 320Gb x 3 in the array

Dempsey · 19 Nov 2006 at 21:34

I was playing FM07, whilst installing Microsoft Defender and I got a blue screen.

The process khips.sys was mentioned. When I restarted, the raid array is initializing again, why and is this going to happen regularly?

I think the khips.sys is a kerio firewall thing but why would the raid array have to go through this again

Dempsey · 19 Nov 2006 at 22:16

Card? Eh No, I have onboard. Proper SATA RAID cards cost ridiculous amounts of money imo

I thought it would only have to re-write whatever stripes failed the partity check, this is going as slow as the initialization which took all day yesterday. :mad:

Dempsey · 19 Nov 2006 at 22:52

CPU Utilization is 4% and 3% (X6800). If I could up the usage so this job is done quicker, how could I do that?

BTW whats "volume write back cache" and should I enable it

Dempsey · 20 Nov 2006 at 02:24

I'm beginning to think that.

I'm now thinking of how to image the data on raid and then change my raid configuration, any recommendation based on the spec in my sig?

If I could find a decent SATA RAID controller, i would consider buying it as long as it isnt mad money. Where would I get one?

Dempsey · 20 Nov 2006 at 12:01

Thanks for the advice, much appreciated.

The reason I'm choosing raid 5 is the amount of storage capacity I have and loosing one drive would drive me up the wall.

I had one of those Highpoints in my shopping basket when ordering my new build but I got it into my head that they were glorified onboard raid. D'oh