Eds89
Contributor
- Joined
- Sep 16, 2017
- Messages
- 122
Hi,
Building my first FreeNAS system, and am hoping for a bit of advice on how to architect the storage for my scenario.
I currently have an LSI hardware RAID controller running several volumes spread over the following disks;
4x 2TB WD
4x 3TB WD
4x 4TB WD
6x 2TB Hitachi
Some of these disks are available to connect straight into FreeNAS, with the others becoming available as I move data from one setup to the other.
I spread my data out onto these different arrays based on what they are; media, applications, VMs etc.
My understanding with ZFS and FreeNAS is, I can only have 1 volume (pool), that will contain multiple vdevs. If a vdev fails, the entire volume fails.
My questions come down to;
Thanks in advance for you advice.
Eds
Building my first FreeNAS system, and am hoping for a bit of advice on how to architect the storage for my scenario.
I currently have an LSI hardware RAID controller running several volumes spread over the following disks;
4x 2TB WD
4x 3TB WD
4x 4TB WD
6x 2TB Hitachi
Some of these disks are available to connect straight into FreeNAS, with the others becoming available as I move data from one setup to the other.
I spread my data out onto these different arrays based on what they are; media, applications, VMs etc.
My understanding with ZFS and FreeNAS is, I can only have 1 volume (pool), that will contain multiple vdevs. If a vdev fails, the entire volume fails.
My questions come down to;
- If I wanted to use RAID 10 equivalent layouts for each of the sets of disks (e.g. 4 disks in RAID 10), could I have several RAID 10 vdevs in the volume?
- How would my data be spread out amongst these vdevs? Would I be able to create shares within the vdev specifically or does it just get assign to somewhere on the volume?
- Is it correct, that once I create a 4 disk RAID 10 vdev, I cannot add another mirror to the vdev, so the only way to increase the storage is to replace all the disks in the vdev?
- Once a vdev is added to a pool, it can never be removed?
- Can you have multiple pools instead, each with its own vdev?
- Is the SLOG assigned to the volume or to the vdev? If to the vdev, can a SLOG drive be assigned to multiple vdevs or does it need to be partitioned and each partition is assigned to a vdev?
Thanks in advance for you advice.
Eds