On 12/20/2015 08:36 AM, Mimiko wrote:
zpool create -f -m none -o ashift=12 zfspool raidz2 wwn-0x50000xxxxxxxxxxx ..... (all disks).
On 12/21/2015 11:20 PM, Mimiko wrote: > One channel is connected to 8 x 2TB the other channel to 8 x 1TB. ... > zfs list > NAME USED AVAIL REFER MOUNTPOINT > zfspool 11.5T 39.7G 335K none RTFM zpool: http://linux.die.net/man/8/zpool Virtual Devices (vdevs) ... raidz ... A raidz group can have single-, double- , or triple parity, meaning that the raidz group can sustain one, two, or three failures, respectively, without losing any data. ... [The] raidz2 vdev type specifies a double-parity raidz group; ... A raidz group with N disks of size X with P parity disks can hold approximately (N-P)*X bytes and can withstand P device(s) failing before data integrity is compromised. The minimum number of devices in a raidz group is one more than the number of parity disks. The recommended number is between 3 and 9 to help increase performance. Doing the math for your 'zpool create' invocation: N = 16 (total number of drives) X = 1 TB (size of smallest drive) P = 2 (raidz2) size = (16 - 2) * 1 TB = 14 TB But your 'zfs list' implies a pool size of 12 TB. I don't understand... RTFM RAID card: http://www.supermicro.com.tr/AOC-USASLP-L8i.pdf Chapter 2 Connectors, Jumpers and Indicators ... 2-1 Front Connectors and Pin Definitions ... Internal SAS Connectors ... Use a single port SAS "ipass" cable (SuperMicro order number CBL-0108L-02) Are you using Supermicro cable CBL-0108L-02? http://www.supermicro.com/support/resources/sas/ Are you using Supermicro chassis 836E2-R800V or 836E2-R800B? http://www.supermicro.com/products/chassis/3U/836/SC836E2-R800.cfm David