averyfreeman
Contributor
- Joined
- Feb 8, 2015
- Messages
- 164
Hi,
I'm not totally new to FreeNAS, as I've run a copy on an old Dell XPS 400 kind of as a test run. However, this was done with UFS as to the age and memory constraints of the system, so I am new to ZFS.
I currently have a system running Ubuntu 14.04 LTS with 4x 2TB WD Green hard drives (4K block size). Two of these drives are WD20EARS and two are WD20EARX, which I believe are all 64GB cache and 5900RPM. (Please correct me if I'm wrong). The reason for the mismatch is due to two of the drives failing in a standalone Mediasonic RAID-5 enclosure I used before I realized there was a difference between 512b and 4K drives (!). When I RMAed the drives I read up on them and realized I made a horrible mistake using them in a standalone enclosure that was unable to recognize the 4k block size. (Please excuse my previous ignorance - it was 2010, so it's been a while, but I'm sure there's still a lot more I need to learn before executing this build properly).
So anyway, the current build is:
Supermicro X9SCL-F-O
Intel Celeron G440 1.6Ghz 35w sandy bridge processor (will upgrade to an E3-1220L v2 when funds allow)
8GB Kingston ECC Unbuffered memory (two 4Gb KVR16E11/4 UDIMMs)
4x 2TB WD "green" 4k drives in RAID O+1 Ext4
My plan is to purchase:
2 more 2TB WD20EARXs
2 more 4GB Kingston ECC UDIMMs (however, KVR16E11S8/4 as opposed to KVR16E11/4)
Note: I plan on using the stock SATA2 controller with 6 ports on the motherboard
I was going to copy my data from the server to another computer with a 5TB drive over GbE, install the hardware, Install FreeNAS 9.3, set up a Raid Z2 array, then copy the data all back.
Does anyone see any issues with my setup or plan?
I guess my main concerns are the mismatches of the hardware - I tried to get as close to possible in matching my older hardware, but it just can't be purchased anymore.
Also, is there any issue with my configuration? I'm hoping I have the right idea with 16GB of ram, but the processor is a bit long in the tooth (although, I don't ever have any issues with copying or streaming files, so I haven't really felt the need to upgrade, and I like that the processor, although single core, consumes only 35w electricity).
What about Raid Z2 -- is that going to be a good move from Raid 0+1? Right now my performance across GbE is around 100MB/s read, 70MB/s write (I used to get 160MBs r/w with a different router). Will performance be similar with Raid Z2? Is fault tolerance acceptable at only 2 out of 6 drives?
Is the stock SATA controller going to be OK for this? Do I need to do anything special in the configuration of the drives? (I saw a ZFS tuning blog recommending creating a "raid 0 array" for each individual drive, but that was using an LSI controller).
I'm really looking forward to your feedback - I definitely want to get this right!
Thank you!
-Avery
I'm not totally new to FreeNAS, as I've run a copy on an old Dell XPS 400 kind of as a test run. However, this was done with UFS as to the age and memory constraints of the system, so I am new to ZFS.
I currently have a system running Ubuntu 14.04 LTS with 4x 2TB WD Green hard drives (4K block size). Two of these drives are WD20EARS and two are WD20EARX, which I believe are all 64GB cache and 5900RPM. (Please correct me if I'm wrong). The reason for the mismatch is due to two of the drives failing in a standalone Mediasonic RAID-5 enclosure I used before I realized there was a difference between 512b and 4K drives (!). When I RMAed the drives I read up on them and realized I made a horrible mistake using them in a standalone enclosure that was unable to recognize the 4k block size. (Please excuse my previous ignorance - it was 2010, so it's been a while, but I'm sure there's still a lot more I need to learn before executing this build properly).
So anyway, the current build is:
Supermicro X9SCL-F-O
Intel Celeron G440 1.6Ghz 35w sandy bridge processor (will upgrade to an E3-1220L v2 when funds allow)
8GB Kingston ECC Unbuffered memory (two 4Gb KVR16E11/4 UDIMMs)
4x 2TB WD "green" 4k drives in RAID O+1 Ext4
My plan is to purchase:
2 more 2TB WD20EARXs
2 more 4GB Kingston ECC UDIMMs (however, KVR16E11S8/4 as opposed to KVR16E11/4)
Note: I plan on using the stock SATA2 controller with 6 ports on the motherboard
I was going to copy my data from the server to another computer with a 5TB drive over GbE, install the hardware, Install FreeNAS 9.3, set up a Raid Z2 array, then copy the data all back.
Does anyone see any issues with my setup or plan?
I guess my main concerns are the mismatches of the hardware - I tried to get as close to possible in matching my older hardware, but it just can't be purchased anymore.
Also, is there any issue with my configuration? I'm hoping I have the right idea with 16GB of ram, but the processor is a bit long in the tooth (although, I don't ever have any issues with copying or streaming files, so I haven't really felt the need to upgrade, and I like that the processor, although single core, consumes only 35w electricity).
What about Raid Z2 -- is that going to be a good move from Raid 0+1? Right now my performance across GbE is around 100MB/s read, 70MB/s write (I used to get 160MBs r/w with a different router). Will performance be similar with Raid Z2? Is fault tolerance acceptable at only 2 out of 6 drives?
Is the stock SATA controller going to be OK for this? Do I need to do anything special in the configuration of the drives? (I saw a ZFS tuning blog recommending creating a "raid 0 array" for each individual drive, but that was using an LSI controller).
I'm really looking forward to your feedback - I definitely want to get this right!
Thank you!
-Avery