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Adaptec 6805 Server

post #1 of 16
Thread Starter 
Hey guys,

Building a mITX Server.
Zotac H67-C-E mITX Wifi Mobo
Core i5 2400 Sandy Bridge CPU (cheapest SB CPU with Virutalization)
2x2GB Ram 1333MHz CL9 Sticks
Seasonic 560W PSU
4x WD 2TB WD20 EARX SATA 6.0 Drives that I want to put in RAID5.
1x 750GB + 1x500gb WD Caviar off the Mobo chipset
Lian Li Q-08 Case

Storing Terrabytes of RAW images from my DSLR so I don't want to loose anything.
Thinking of picking up a Adaptec 6805 Controller. However I'm unable to source a mSAS to 4x SATA III Fan-out cable. I've been able to find this one on their website
Product Name: ACK-I-mSASx4-4SATAx1 0.5m R
http://www.adaptec.com/en-us/product...es/cables/sas/

Is this a SATA 6.0 fan-out cable? So stupid a 450US$ controller comes with no cables
post #2 of 16
first, and most important, question:

Why the hell do you need such a huge CPU in a fileserver, especially if you have a hardware RAID card also?
post #3 of 16
Thread Starter 
Quote:
(cheapest SB CPU with Virutalization)
I would have picked up the i3 but it doesn't support virtualization all the way up until the i5 2400.
post #4 of 16
but what are you doing that needs virtualisation? And why do you want SB, when for fileserver tasks an Atom can handle most tasks just as well?

(although I wouldn't recommend Atom...)
post #5 of 16
Thread Starter 
haha its not ONLY going to be a fileserver. I'll be using it for many things and for >8 users at a time. Plus I want it to have enough power for 5 years only touching the RAID config assuming I run out of space in that time or a drive fails.
post #6 of 16
1)Those western digital drives are known to have issues with error recovery timeout in RAID. The safest options that don't cost significantly more money are the Hitachi 5K3000 and 7K2000. The Samsung F4 is also reported to work well in raid.

2)Why expensive controller + four cheap disks? If the box will be virtualized, there is no reason to avoid software raid.

3)It's a matter of personal comfort, but I would not use 2TB disks with raid 5, especially not consumer-grade disks. Raid6 will let you keep your array in the event of a read error during a rebuild.

4)That motherboard is kind of crappy. Realtek nic = bad, only two dimm slots + virtualization = bad
These are possible alternatives:
http://www.newegg.com/Product/Produc...82E16813131611
http://www.newegg.com/Product/Produc...-239-_-Product

5)There is no such thing as a "sata3 cable":
Quote:
9: Does SATA 6Gb/s require different connectors and cables to support the higher
transfer speed?
A9: The same cables and connectors used for current SATA 1.5 and SATA 3.0 Gb/s
implementations can be used to connect SATA 6Gb/s devices, although SATA-IO recommends
quality components be selected to ensure data integrity and robust operation at the faster SATA
6Gb/s transfer rate. Keeping the existing SATA connector form factor enables SATA 6Gb/s to
be designed into the same cost-conscious hardware architectures while minimizing
infrastructure changes.
http://www.sata-io.org/documents/SAT...-FAQ-FINAL.pdf
post #7 of 16
Thread Starter 
Thanks so much for the help bud. Exactly the information I was looking for.
post #8 of 16

Actually, those WDs are fine with a firmware update + using a jumper to hard set the drives to 1.5G instead of 6. They aren't fast enought to even saturate 1.5 so it doens't make any difference in performance. As for the Raid Level, you are using the adaptec, and one of the best features is the Raid 5EE. Its a built in hotspare, without the actual hotspare disk. So you get performance and a hotspare. I think that is better than 6 personally, because it will autorebuild yet still give awesome performance. I am using a ton (11) of the WD GPs in my ESX box (R10 for that one though). They are absolutely fine.

Also, you don't need the SATAIII version of the cable. The SATAII versions work just fine.

Cheapest one I could find


Edited by slavearm - 6/11/11 at 2:21am
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post #9 of 16
I'm unsatisfied with the RAI6 performance of this card. I've got 6xBarracudda 7200.12 1TB drives and I used to get close to 500MiB/s sustained read/write with RAID5. Once I migrated to RAID6 this dropped to 350MiB/s.

I might convert to RAID5EE now that you've mentioned the benefits.
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Intel X25-M G2 80GB Adaptec 6805 ZMCP 1TBx6 RAID 5EE ASUS DVD-RW Corsair Hydro Series H50 
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post #10 of 16
Its just as fast as R5. I think you will be pleased with the result.
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3xOCZ V3MI 120GB + 4xWD2TB Blacks on LSI 9265-8i POS Generic Black Thing 3xHP ZR24W IPS 5760x1200 Logitech G19 
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3xOCZ V3MI 120GB + 4xWD2TB Blacks on LSI 9265-8i POS Generic Black Thing 3xHP ZR24W IPS 5760x1200 Logitech G19 
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