Very Slow Writing Spead with a RAID5 configuration.
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November 13, 2012, 06:01 AM
Join Date: Jul 2007
Location: Toronto, ON
My System Specs
Originally Posted by
1- Its saying that the Virtual Drive is in a Background Initialization Progress, i don't understand why and its been one day that i set that up and is still in 0%? So something is not right.
I suspect it'll take at least a week, if not longer, to fully initialize. Once that does finish, your write speeds should be at least double what you are getting now. My 2TB RAID10 array took about 2 days to initialize on my LSI 9211 (which is basically the same card you have).
So right now you have 19TB. If 1 of your 8 disks fails, your performance is going to drop back to what you're seeing right now (maybe even worse) until you replace that drive and the whole array re-initializes itself. This is largely due to the RAID card you have not having a dedicated CPU and RAM to calculate the parity bits. It's relying on your CPU which is far slower at performing those calculations.
With RAID10, you'd have around 11TB, but you could lose up to 4 drives without any major performance losses. Likewise, read/write speeds should be much higher as there are no parity bits to calculate, it just writes data to pairs of drives.
And unless you have a decent UPS attached to your PC, I really wouldn't recommend enabling caching. Should your PC lose power unexpectedly, you'll risk corrupting 19TB of data.
My System Specs
ASUS Rampage IV Extreme
Intel Core i7 3930k @ 4.8GHz
8x4GB Mushkin Redline DDR3-2133
ASUS GTX690 w/ Heatkiller FC-690-LT
Corsair Neutron GTX 240GB OCZ RevoDrive3 X2 480GB Mushkin Chronos 480GB OCZ Vertex 3 120GB 2x Seagate 3TB (RAID1)
Coolermaster Cosmos II
Creative Soundblaster Z
Windows 8.1 x64
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