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ZFS pool seems too small for number of disks

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hellokevin11
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ZFS pool seems too small for number of disks

Post by hellokevin11 »

I have fourteeen 1TB drives currently configured as ZFS Z3 Raid

Discs show 953870MB each drive after formatting as zfs pool device with "minimum free space 8"

Original pool failed to initialize, I followed faq 0129 to the letter, wrote the script and then the drives were available for the pool.

However I am seeing less than 10TB space.

Name Size Used Free Capacity Dedup Health AltRoot
Pool1 12.6T 2.10M 9.03T 0% 1.00x ONLINE -

Shouldn't Size be at the minimum 9.5tb if not greater?

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b0ssman
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Re: ZFS pool seems too small for number of disks

Post by b0ssman »

that is the file system overhead.
Nas4Free 11.1.0.4.4517. Supermicro X10SLL-F, 16gb ECC, i3 4130, IBM M1015 with IT firmware. 4x 3tb WD Red, 4x 2TB Samsung F4, both GEOM AES 256 encrypted.

hellokevin11
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Re: ZFS pool seems too small for number of disks

Post by hellokevin11 »

b0ssman wrote:that is the file system overhead.
I wish the so-called calculators on line would take account for that, they are all wrong.

I suspected as much, but wanted to be sure before I began the burn in.

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raulfg3
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Re: ZFS pool seems too small for number of disks

Post by raulfg3 »

14-3 for parity = 11 disk.

11x953870MB = 10492570 =10 TB

10TB - 11x8MB(minimun free space) = 9,03TB
12.1.0.4 - Ingva (revision 7743) on SUPERMICRO X8SIL-F 8GB of ECC RAM, 11x3TB disk in 1 vdev = Vpool = 32TB Raw size , so 29TB usable size (I Have other NAS as Backup)

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