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Slow RAID 1 Boot Drive

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March 14, 2013 1:52:37 PM

Hi, Recently I did a custom build for a client with two 1 TB Western Digital Black Hardrives in a RAID 1 Array. I did this in order to have one more possible failsafe against very important information on the computer (Beyond the normal monthly backup of course!). On this computer, the Operating System (Windows 8 64-Bit is installed on the RAID Array drives. Ever since I did the build and checked back on the client, the system seems to run slow. For instance, sometimes it will take 5 seconds for the popup window to show up once I have right clicked on the homescreen.

I am wondering if this is due to the fact that the operating system was installed on the RAID?

The other specs on the computer are NOT low end and thus it seems that I should be experiencing good speeds on the computer

Benchmarks: HD Tune: Intel Raid 1 Volume Benchmark

Transfer Rate Minimum : 1.6 MB/sec
Transfer Rate Maximum : 128.7 MB/sec
Transfer Rate Average : 68.3 MB/sec
Access Time : 13.9 ms
Burst Rate : 1281.3 MB/sec
CPU Usage : 3.3%

Specs of build:

Intel Core i5-3570 Ivy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics ...

EVGA SuperClocked 02G-P4-2662-KR GeForce GTX 660 2GB 192-bit GDDR5 PCI Express 3.0 x16 HDCP Ready SLI Support Video ...

ASRock Z75 Pro3 LGA 1155 Intel Z75 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

RAID 1: Western Digital WD Black WD1002FAEX 1TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive

Antec BP550 Plus 550W Continuous Power ATX12V V2.2 80 PLUS Certified Modular Active PFC Power Supply

CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CML8GX3M2A1600C9R

Rosewill BLACKHAWK Gaming ATX Mid Tower Computer Case, come with Five Fans, window side panel, top HDD dock

If this is the case and the computer is slow due to the fact that it is constantly trying to sync the RAID hardrives, How would I go about installing the OS on a new SSD without having to buy and install a new copy of Windows? (Sorry, I have little experience with changing OS boot drives)

Thanks,
--Dsudi19

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a c 379 G Storage
March 15, 2013 5:16:08 AM

Windows 8 is not a server OS. RAID 1 shouldn't slow things down. I didn't see specs for a RAID controller. A motherboard's onboard RAID controllers are usually garbage compared to add in RAID cards. If this is a business they should be making backups more than once a month as any malware or accidental file deletion will render the server useless, RAID or not. That said, RAID 1 will usually perform about the same as a single drive (read) and a little slower for writes as it has to write the data to two drives. Some RAID controllers will read in stripes. That helps increase read speeds. I would not expect this of an onboard RAID controller.
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a c 885 G Storage
March 15, 2013 3:12:40 PM

Shrink the partition to a size that will fit on the ssd and then clone it.

Alternately you could swap out one of the non-raid supported Black drives for an RE4, let the raid rebuild, and then swap out the other one and let it rebuild.

It seems WD is going out of their way to make sure raid doesn't work well on anything besides their RE line.
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