Missing Space

[Jedipottsy]

Hi,
I have 6 drives in a NAS, configured as such

Code:

 NAME											STATE	 READ WRITE CKSUM
	vol0											ONLINE	   0	 0	 0
	  raidz1-0									  ONLINE	   0	 0	 0
		gptid/f3b51fd0-e0fa-11e7-b007-bc5ff4755305  ONLINE	   0	 0	 0
		gptid/f4873e6b-e0fa-11e7-b007-bc5ff4755305  ONLINE	   0	 0	 0
		gptid/f5629108-e0fa-11e7-b007-bc5ff4755305  ONLINE	   0	 0	 0
	  raidz1-1									  ONLINE	   0	 0	 0
		gptid/f64308c2-e0fa-11e7-b007-bc5ff4755305  ONLINE	   0	 0	 0
		gptid/f750dc3d-e0fa-11e7-b007-bc5ff4755305  ONLINE	   0	 0	 0
		gptid/f83edd8f-e0fa-11e7-b007-bc5ff4755305  ONLINE	   0	 0	 0

two raidz 1's striped. They are 1TB drives, and should give me 5.3TB, but i can only use 3.51TB. I haven't set any restrictions or Quota.
Why can't i access the rest of the space?

Thanks

 

[danb35]

two raidz 1's striped. They are 1TB drives, and should give me 5.3TB

No, they shouldn't. RAIDZ1 uses one disk's worth of parity. You have two RAIDZ1 vdevs, so you're using two disks' worth of parity. That means your net storage capacity (ignoring filesystem overhead, reserved space, and a bunch of other fairly-small issues) would be that of four disks. For four 1 TB disks, that would be about 3.6 TiB.

Edit: You also desperately need to clear some space on your pool.

 

[Jedipottsy]

No, they shouldn't. RAIDZ1 uses one disk's worth of parity. You have two RAIDZ1 vdevs, so you're using two disks' worth of parity. That means your net storage capacity (ignoring filesystem overhead, reserved space, and a bunch of other fairly-small issues) would be that of four disks. For four 1 TB disks, that would be about 3.6 TiB.

Edit: You also desperately need to clear some space on your pool.

Hi

Sorry for my confusion, thought it should be more than that.
Is there a better way to configure my layout then? I ideally want to maximize performance first, space second and redundancy third (we have regular synced backups)

Thanks

 

[danb35]

I ideally want to maximize performane first, space second and redundancy third (we have regular synced backups)

If you simply striped all six disks, that would give you the greatest performance and capacity, but zero redundancy--when any one of those disks fails, you'd lose the whole pool. Striped mirrors would also give good performance, better redundancy, but you'd lose half your capacity to redundancy.

Or you could replace your 1 TB disks with larger ones--even replacing three of them would grow your array so it wouldn't be so full.

 

[gpsguy]

Freeing up disk space and/or right sizing your pool will help with performance.

At 90% utilization, performance starts to tank.

As @danb35 has already said, you need to free up some storage on your volume, lest you run out of space.

 

[Ericloewe]

Or you could replace your 1 TB disks with larger ones--even replacing three of them would grow your array so it wouldn't be so full.

The three correct ones, at least. That'd be an embarrassing mistake to make.