Hi all,
After reading a lot of threads about ECC ram and the like, I finally have the budget to upgrade my current low-budget NAS. Current setup has a 4 x 2TB RaidZ1 pool.
New hardware is: ASROCK C2750D4I (octa core avaton) with 16GB ECC RAM + 5 new 3TB WD Red drives.
The idea was to use 8 drives and have 1 spare. The problem is that I think that one of my 2TB drives is failing (SMARTD mails + performance drops and gstat telling that same disk is always very busy with +2000ms/read). Since I already have the drives, but not yet the other parts, I will use my planned '3 TB spare' to replace the failing one.
After explaining the context I would like some advice on configuring the pools in the new server when it arrives. I should also mention that I have about 3TB of data currently on the NAS and a 1TB external USB drive with the critical data (like pictures, financial documents) backed up. The rest contains my media library which I would prefer to keep of course :)
How I see it I have the following options:
1. 1vdev with 4x3TB raidz1 + 1 vdev with (3 x 2TB, 1 x 3TB) raidz1 = 1 pool with 15 TB usable space
So the question is: is my reasoning correct and the solution marked in red do-able? Or are there any other suggestions?
Thx :)
After reading a lot of threads about ECC ram and the like, I finally have the budget to upgrade my current low-budget NAS. Current setup has a 4 x 2TB RaidZ1 pool.
New hardware is: ASROCK C2750D4I (octa core avaton) with 16GB ECC RAM + 5 new 3TB WD Red drives.
The idea was to use 8 drives and have 1 spare. The problem is that I think that one of my 2TB drives is failing (SMARTD mails + performance drops and gstat telling that same disk is always very busy with +2000ms/read). Since I already have the drives, but not yet the other parts, I will use my planned '3 TB spare' to replace the failing one.
After explaining the context I would like some advice on configuring the pools in the new server when it arrives. I should also mention that I have about 3TB of data currently on the NAS and a 1TB external USB drive with the critical data (like pictures, financial documents) backed up. The rest contains my media library which I would prefer to keep of course :)
How I see it I have the following options:
1. 1vdev with 4x3TB raidz1 + 1 vdev with (3 x 2TB, 1 x 3TB) raidz1 = 1 pool with 15 TB usable space
- Migrating is easy: create vdev with 3TB disks, move data, add second vdev to the pool
- Future expanding:
- Replace remaing 2 TB drives with 3 TB => 18 TB usable
- Add additional RaidZ1 vdev of 4 drives (and buy a bigger case)
- Replace drives in batches of 4
- Threads and the manual say Raid5/RaidZ1 should be avoided with larger drives.
- Since I will need all 8 drives to create and only have 1 TB available for backup I would lose a large part of my media collection
- Possible solution: Use 1 of the 3 TB disks to backup my media collection and the failing 2 TB disk to create the RaidZ2. Move data to the pool and then replace the failing 2 TB disk with the 3 TB one.
- Future expanding:
- Replace remaing 2 TB drives with 3 TB => 18 TB usable
- Replace drives in batches of 8
- Add additional RaidZ2 vdev of 6 drives (and buy a bigger case and expansion slot for sata ports)
- RaidZ2 is recommended for larger drives
So the question is: is my reasoning correct and the solution marked in red do-able? Or are there any other suggestions?
Thx :)
