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1. Re: Storage Configurations: RAID and OS Disc
Bill Gehrke May 26, 2010 11:58 PM (in response to Druyan)1 person found this helpfulMy (limited so far) experience with 6 Gb/s disks and interfaces show marginal if any performance difference with them over 3 Gb/s systems on small (2-4 drives) setups. I saw someplace that until you get up to 12-16 drives on a controller you really will not see much change. That said, the fact that the new 6 Gb/s 7200 rpm drives have 64 MB of cache probably makes that a superior choice even on a 3 Gb/s interface. And then you add into that mix the new 600 GB WD VelociRaptor 10,000 rpm drive (32 MB cache) which is the fastest SATA drive available and you do indeed have a lot of options. If you really are serious about a RAID controller for 8 or more drives there is only one choice Areca. One of these days we expect to see the newest member of the family the ARC 1880 series.
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2. Re: Storage Configurations: RAID and OS Disc
platduck May 27, 2010 12:36 AM (in response to Druyan)1 person found this helpfulre SATA 6g ports, remember that only refers to the maximum speed of the SATA ports and bus, but the disc still only spins at 7200rpm and you will most probably get the same speeds of around 90-110mb/s with a single disc. That said I have no personal experience on that.
My advice on RAID is usually, if the budget allows obviously, and looking at your build it does not seem that budget is much of a factor, to go with dedicated (built for video) RAIDs from companies that specializes in just that. So I would recommend getting something from CALDIGIT ( www.caldigit.com ). I have only had good experiences with the company and their products.
I am running a caldigit HDElement (http://www.caldigit.com/HDElement/ ) on the Caldigit RAID card on all our Edit Suites. Its an external box with 4 HDD. In a 4 disc RAID 5 I get speeds between 230 and 260 mb/s depending on how full the RAID is and how fragmented it is. On the RAID card you also have a port to add up to 4 internal discs, which I use to run 4 discs in RAID 0.
We then use the external RAIDs for footage and stuff we need protected (RAID 5) and the internal RAIDs for scratch/preview/renders (RAID 0). Add a SSD for OS and applications and you sit with close to zero bottle necks.
For more speed look at one of their 8 disc external products.
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3. Re: Storage Configurations: RAID and OS Disc
Druyan May 27, 2010 10:55 PM (in response to platduck)Thanks for the info--much appreciated!!