designflaw
Cadet
- Joined
- Feb 5, 2015
- Messages
- 5
Hi All - first I want to say thanks for all the helpful posts/guides/discussions on here. You are an awesome resource for a FreeNAS noob. I'm currently planning on building a box with the following hardware:
ASRock C2750D4I
2x8GB Crucial ECC ram
Fractal Node 804 Case
450W PSU
And for drives... I'm stuck. I'm planning on at least doing 6x3TB WD Reds at $110 each configured in RAIDZ2. I think I'll hit capacity in about 18 months and will need to expand my pool. I read in cyberjocks slideshow that it is recommended to add a new vdev with the same number of drives but I'm not clear on why. What would the impact be if I expanded my pool by adding a new RAIDZ2 vdev made up of 4 disks in this situation? If it's significant I'm thinking I'll need to reevaluate the case I've decided on as it only supports 10 drives. I'm also considering just doing 10 drives initially to avoid any potential issues.
TL;DR - Is it ok to add a 4 disk vdev to a pool with a 6 disk vdev or would it be better to start out with a 10 disk vdev? (All vdevs being RAIDZ2)
Thanks!
ASRock C2750D4I
2x8GB Crucial ECC ram
Fractal Node 804 Case
450W PSU
And for drives... I'm stuck. I'm planning on at least doing 6x3TB WD Reds at $110 each configured in RAIDZ2. I think I'll hit capacity in about 18 months and will need to expand my pool. I read in cyberjocks slideshow that it is recommended to add a new vdev with the same number of drives but I'm not clear on why. What would the impact be if I expanded my pool by adding a new RAIDZ2 vdev made up of 4 disks in this situation? If it's significant I'm thinking I'll need to reevaluate the case I've decided on as it only supports 10 drives. I'm also considering just doing 10 drives initially to avoid any potential issues.
TL;DR - Is it ok to add a 4 disk vdev to a pool with a 6 disk vdev or would it be better to start out with a 10 disk vdev? (All vdevs being RAIDZ2)
Thanks!