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Mirrored Pair Example

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Changed lines 25-27 from:
  NAME                                       STATE     READ WRITE CKSUM
  Mirror-Pair                                ONLINE       0     0     0
    mirror-0                                 ONLINE       0     0     0
to:
  NAME                                      STATE     READ WRITE CKSUM
  Mirror-Pair                               ONLINE       0     0     0
    mirror-0                                ONLINE       0     0     0
Changed line 30 from:
    mirror-1                                 ONLINE       0     0     0
to:
    mirror-1                                ONLINE       0     0     0
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In this example we create a pair of mirrors (aka RAID10) pool using 4 disks. This pool can tolerate a disk failure in each mirror side. By “striping” two mirrors we can achieve a performance gain for our disk throughput.

$ sudo zpool showdisks

DISK DEVICE      SIZE  CONNECTION    DESCRIPTION
/dev/disk1    3.75GiB  USB           Verbatim Store n Go Drive Media
/dev/disk2    3.75GiB  USB           Verbatim Store n Go Drive Media
/dev/disk3    3.75GiB  USB           Verbatim Store n Go Drive Media
/dev/disk4    3.75GiB  USB           Verbatim Store n Go Drive Media

$ sudo zpool create -f Mirror-Pair mirror /dev/disk1 /dev/disk2 mirror /dev/disk3 /dev/disk4

$ zpool list Mirror-Pair
NAME           SIZE   ALLOC    FREE     CAP  HEALTH  ALTROOT
Mirror-Pair  6.81Gi   473Ki  6.81Gi      0%  ONLINE  -

$ zpool status Mirror-Pair
  pool: Mirror-Pair
 state: ONLINE
 scan: none requested
config:

  NAME                                       STATE     READ WRITE CKSUM
  Mirror-Pair                                ONLINE       0     0     0
    mirror-0                                 ONLINE       0     0     0
      GPTE_41ED410A-FC24-4A0A-BA16-B1987A…  ONLINE       0     0     0  at disk1s2
      GPTE_6FD043CB-2F63-4C9F-8E78-004924…  ONLINE       0     0     0  at disk2s2
    mirror-1                                 ONLINE       0     0     0
      GPTE_59FCD2C1-3183-4340-8AD0-213160…  ONLINE       0     0     0  at disk3s2
      GPTE_389FB535-721B-4F9C-B289-AEF275…  ONLINE       0     0     0  at disk4s2

errors: No known data errors

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