I built a new RAIDZ2 on FreeNAS 9.10.2 using ten 8 TB (7.27 Tib) Seagate drives. I created a single volume (named "Volume") and single dataset using the entire volume. I spent the last 12 days transferring over my data--ugh, finally completed tonight!
Using Biduleohm's calculator, and per my own calculations, the expected volume size should be 58.21 TiB. However, under the Storage | Volumes tab, I see 53.5 TiB (30.8 + 22.7):
Used: 30.8 TiB (57%)
Available: 22.7 TiB
Compression: lz4
Compression Ratio: 1.00x
zpool status shows all 10 disks online.
zpool list shows:
Volume 72.5T 40.4T 32.1T - 36% 55% 1.00x ONLINE /mnt
So, two questions:
1. Where is the missing 4.71 TiB (58.21 [expected] - 53.5 [actual])? That's close to a 10% loss.
2. Why the discrepancy between the reported info under Storage | Volumes (30.8/22.7) and "zpool list" (40.4/32.1)? TB to TiB doesn't explain it.
Thanks so much!
Jeff Arnholt
Using Biduleohm's calculator, and per my own calculations, the expected volume size should be 58.21 TiB. However, under the Storage | Volumes tab, I see 53.5 TiB (30.8 + 22.7):
Used: 30.8 TiB (57%)
Available: 22.7 TiB
Compression: lz4
Compression Ratio: 1.00x
zpool status shows all 10 disks online.
zpool list shows:
Volume 72.5T 40.4T 32.1T - 36% 55% 1.00x ONLINE /mnt
So, two questions:
1. Where is the missing 4.71 TiB (58.21 [expected] - 53.5 [actual])? That's close to a 10% loss.
2. Why the discrepancy between the reported info under Storage | Volumes (30.8/22.7) and "zpool list" (40.4/32.1)? TB to TiB doesn't explain it.
Thanks so much!
Jeff Arnholt