DIY rack mounted NAS/SAN

annimalutza

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Jul 4, 2014
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Hello all.
We are a small graphic/video editing company and, as the title states, I'm in the process of building a NAS/SAN server.We are editing HD video files directly from the server so we already have a 8Gb fiber channel "LAN".

My intention is to build a 20+ Tb RAID5 storage which can be accessed simultaneously by 8 video editing workstations thru the fiber channel link for online video editing.
Now, I was thinking of 8/12 3,5" hot swappable bays rack mounted case with 3TB SEAGATE BARRACUDA ST3000DM001 hard drives; 16 Gb RAM; 2 Intel Xeon CPUs.
Power consumption is not a problem.
As for the budget, I'm trying to stay as low as possible, maintaining high the performances.

As this is my first time trying a build like this, I have some questions:
1) What Mother Board should I use? I'm not interested in mini-ITX as the form factor is not a problem and I need 2 Ethernet slots and at least 3 PCIe expansion slots for installing the fiber channel network adapter, the SATA expansion card and the 2-Port Ethernet Card(although I didn't fully understand why I need 4 cat-5 cables connected to the LAN network....someone can explain better, please?)

2) Because the NAS would be accessed by multiple users at the same time, I'm going dual CPU's.What should i look for?

3) Do you have any case recommendation?

4) in terms of PSU should i go dual PSU or maintain 1 big (1000W+) unit? I already have the entire rack on UPS so power blackout should not be a problem.

5) does the FreeNAS software by itself do it, or i need to install Linux?

If you have any questions, I'm here to answer them.
If there is anybody with fiber channel NAS experience, I would gladly want to hear his opinion/suggestion.

cheers,
Cristian.

P.s. As English is not my native language, I would like to excuse in advance for the spelling errors.

 
Solution
I recently built something similar to what you are describing, in my case I have 36TB of storage.

My system is uses:
Gigabyte Z87X UD5h MB
Intel I5 CPU
1 x Intel S320 SSD
9 x Seagate 4TB HDD
1 x 800W PSU
1 x Sharkoon 10 slot case so all the drives are internal
I run this system on Ubuntu Unix 14.04

Been running 24/7 for over 6 months with no problems except a few small ones (no machine down time) with the Ubuntu upgrade to 14.04
Communication with the Windows machines is through Samba (on the Ubuntu machine).

I also use Snapraid rather than RAID 5.

As this was my first Ubuntu server I used an SSD as the system drive but from my experience I would recommend a 10 x 4TB setup and partition one of those (10GB is plenty) for the system...

shag00

Distinguished
Dec 29, 2010
316
0
18,860
I recently built something similar to what you are describing, in my case I have 36TB of storage.

My system is uses:
Gigabyte Z87X UD5h MB
Intel I5 CPU
1 x Intel S320 SSD
9 x Seagate 4TB HDD
1 x 800W PSU
1 x Sharkoon 10 slot case so all the drives are internal
I run this system on Ubuntu Unix 14.04

Been running 24/7 for over 6 months with no problems except a few small ones (no machine down time) with the Ubuntu upgrade to 14.04
Communication with the Windows machines is through Samba (on the Ubuntu machine).

I also use Snapraid rather than RAID 5.

As this was my first Ubuntu server I used an SSD as the system drive but from my experience I would recommend a 10 x 4TB setup and partition one of those (10GB is plenty) for the system files as Ubuntu is so small and so fast. All the software is free (and works) so its quite price competitive.
 
Solution