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Crear raid

mdadm --create --verbose /dev/md/md-bandeja-sas \
/dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm    \
/dev/sdn /dev/sdo /dev/sdp /dev/sdq /dev/sdr    \
/dev/sds /dev/sdt /dev/sdu /dev/sdv /dev/sdw    \
--level=6                                       \
--raid-devices=14                               \
--spare-devices=1                               \

Información raid

# mdadm --detail /dev/md/md-bandeja-sas 
/dev/md/md-bandeja-sas:
           Version : 1.2
     Creation Time : Thu Aug 20 12:28:32 2020
        Raid Level : raid6
        Array Size : 23440588800 (22354.69 GiB 24003.16 GB)
     Used Dev Size : 1953382400 (1862.89 GiB 2000.26 GB)
      Raid Devices : 14
     Total Devices : 15
       Persistence : Superblock is persistent

     Intent Bitmap : Internal

       Update Time : Thu Aug 20 12:38:19 2020
             State : clean, resyncing 
    Active Devices : 14
   Working Devices : 15
    Failed Devices : 0
     Spare Devices : 1

            Layout : left-symmetric
        Chunk Size : 512K

Consistency Policy : bitmap

     Resync Status : 0% complete

              Name : md-bandeja-sas
              UUID : 596f04dd:cc136fda:907e686f:aca85f28
            Events : 97

    Number   Major   Minor   RaidDevice State
       0       8      128        0      active sync   /dev/sdi
       1       8      144        1      active sync   /dev/sdj
       2       8      160        2      active sync   /dev/sdk
       3       8      176        3      active sync   /dev/sdl
       4       8      192        4      active sync   /dev/sdm
       5       8      208        5      active sync   /dev/sdn
       6       8      224        6      active sync   /dev/sdo
       7       8      240        7      active sync   /dev/sdp
       8      65        0        8      active sync   /dev/sdq
       9      65       16        9      active sync   /dev/sdr
      10      65       32       10      active sync   /dev/sds
      11      65       48       11      active sync   /dev/sdt
      12      65       64       12      active sync   /dev/sdu
      13      65       80       13      active sync   /dev/sdv

      14      65       96        -      spare   /dev/sdw