50 MB-os lemezből nem lesz zpool :)
root@freebsdtst01:~ # zpool create testpool /dev/ada3 cannot create 'testpool': no such pool or dataset root@freebsdtst01:~ # dmesg | grep ada3 ada3 at ahcich2 bus 0 scbus4 target 0 lun 0 ada3: <VBOX HARDDISK 1.0> ATA-6 SATA 2.x device ada3: Serial Number VBa7e950a8-d6665851 ada3: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) ada3: Command Queueing enabled ada3: 50MB (102400 512 byte sectors)