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1. Re: Raid Sata 3 Hard Drive Brand and Capacity Recommendations
Harm Millaard Sep 22, 2011 11:09 AM (in response to Rowby Goren)Rowby,
For individual drives there is no difference between SATA2 and SATA3 disks, at least not performance wise, since there does not exist a single disk that fully utilizes the bandwidth of SATA2, let alone SATA3.
SATA3 disks can have 64 MB cache where SATA2 disks are limited to 32 MB and that can make a difference.
For all conventional disks the performance starts to drop off when you reach a fill-rate of around 60%.
For SATA3 raid disks I would look at Hitachi 7K3000 disks. The alternative WD RE4 is way too expensive IMO and personally I have something against Seagate, having been bitten too many times by their quality.
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2. Re: Raid Sata 3 Hard Drive Brand and Capacity Recommendations
rowby Sep 22, 2011 11:47 AM (in response to Harm Millaard)HI Harm,
So this would be a good choice:
So I am really not taking "advantage" of the Sata 3 -- just the 64 MB Cache.
Generally speaking, will that help speeding up export??? OR is Export mainly processor intensive work, rather than the sata "cache" work.
It's wonderful Harm, you are so helpful on these forums. I can get a big "greedy" for your informative responses. Last night I found myself Googling "What time is it in the Netherlands" to see if you were still awake (I'm in California).
Rowby -
3. Re: Raid Sata 3 Hard Drive Brand and Capacity Recommendations
rowby Sep 22, 2011 11:48 AM (in response to rowby) -
4. Re: Raid Sata 3 Hard Drive Brand and Capacity Recommendations
Harm Millaard Sep 22, 2011 12:05 PM (in response to rowby)That is the one I want to have in my new system, well 16 of them for the new raid.
Export time depends on the format you are exporting. Encoding is CPU intensive, and the gains will be negligent, exporting without encoding like DV to AVI is disk intensive. That is why it is a separate test in the PPBM benchmark.
BTW, I believe the time difference is 9 hours.
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5. Re: Raid Sata 3 Hard Drive Brand and Capacity Recommendations
rowby Sep 22, 2011 1:50 PM (in response to Harm Millaard)HI
I Just put 4 of these in my amazon shopping cart. But before I check out, I just want to make sure these are the same drives from the previous link:
http://www.amazon.com/gp/product/B004AM6TKY/ref=ox_sc_act_title_1?ie=UTF8&m=A30YNTVQ04HG16
The "0F12115" at the end of the product description made me want to double check with you.
Rowby
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6. Re: Raid Sata 3 Hard Drive Brand and Capacity Recommendations
Harm Millaard Sep 22, 2011 2:43 PM (in response to rowby)These are the data I have of this disk:
SKU: 0F12115, HDS723020BLA642, EAN: 5704327982289, 5704327985259
but of course these are European or even Dutch numbers.
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7. Re: Raid Sata 3 Hard Drive Brand and Capacity Recommendations
rowby Sep 22, 2011 4:36 PM (in response to Harm Millaard)Thanks Harm.
I ordered the hard drives and also just now ordered the new areca card.
It is weird how I can't find (again) the Answered button. It seems to come and go????
Rowby



