1. [root@prod-dmp-worker-ap01 ~]# dmesg |grep -i raid
    2. [    5.349010] Raid
    3. [   12.605540] scsi 0:1:0:0: RAID1: handle(0x011e), wwid(0x0961ab99009e942f), pd_count(2), type(SSP)
    4. [root@prod-dmp-worker-ap01 ~]# cat /proc/scsi/scsi
    5. Attached devices:
    6. Host: scsi0 Channel: 01 Id: 00 Lun: 00
    7.   Vendor: LSI      Model: Logical Volume   Rev: 3000
    8.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    9. Host: scsi0 Channel: 00 Id: 00 Lun: 00
    10.   Vendor: TOSHIBA  Model: AL15SEB12EQ      Rev: 1403
    11.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    12. Host: scsi0 Channel: 00 Id: 01 Lun: 00
    13.   Vendor: TOSHIBA  Model: AL15SEB12EQ      Rev: 1403
    14.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    15. Host: scsi0 Channel: 00 Id: 02 Lun: 00
    16.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    17.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    18. Host: scsi0 Channel: 00 Id: 03 Lun: 00
    19.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    20.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    21. Host: scsi0 Channel: 00 Id: 04 Lun: 00
    22.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    23.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    24. Host: scsi0 Channel: 00 Id: 05 Lun: 00
    25.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    26.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    27. Host: scsi0 Channel: 00 Id: 06 Lun: 00
    28.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    29.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    30. Host: scsi0 Channel: 00 Id: 07 Lun: 00
    31.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    32.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    33. Host: scsi0 Channel: 00 Id: 08 Lun: 00
    34.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    35.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    36. Host: scsi0 Channel: 00 Id: 09 Lun: 00
    37.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    38.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    39. Host: scsi0 Channel: 00 Id: 10 Lun: 00
    40.   Vendor: MSCC     Model: SXP 36x12G       Rev: RevB
    41.   Type:   Enclosure                        ANSI  SCSI revision: 06
    42. [root@prod-dmp-worker-ap01 ~]#

    image.png

    1. [root@prod-dmp-worker-ap01 ~]# fdisk -l
    2. WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
    4. Disk /dev/sda: 1199.0 GB, 1198999470080 bytes, 2341795840 sectors
    5. Units = sectors of 1 * 512 = 512 bytes
    6. Sector size (logical/physical): 512 bytes / 4096 bytes
    7. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    8. Disk label type: gpt
    9. Disk identifier: FF565C21-A9B4-422D-ACA3-A2285233EEBB
    12. #         Start          End    Size  Type            Name
    13.  1         2048      1050623    512M  EFI System      EFI System Partition
    14.  2      1050624      2099199    512M  Microsoft basic 
    15.  3      2099200    509626367    242G  Linux LVM       
    17. Disk /dev/sdb: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
    18. Units = sectors of 1 * 512 = 512 bytes
    19. Sector size (logical/physical): 512 bytes / 4096 bytes
    20. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    23. Disk /dev/sde: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
    24. Units = sectors of 1 * 512 = 512 bytes
    25. Sector size (logical/physical): 512 bytes / 4096 bytes
    26. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    29. Disk /dev/sdh: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
    30. Units = sectors of 1 * 512 = 512 bytes
    31. Sector size (logical/physical): 512 bytes / 4096 bytes
    32. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    35. Disk /dev/sdi: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
    36. Units = sectors of 1 * 512 = 512 bytes
    37. Sector size (logical/physical): 512 bytes / 4096 bytes
    38. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    41. Disk /dev/sdg: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
    42. Units = sectors of 1 * 512 = 512 bytes
    43. Sector size (logical/physical): 512 bytes / 4096 bytes
    44. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    47. Disk /dev/sdf: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
    48. Units = sectors of 1 * 512 = 512 bytes
    49. Sector size (logical/physical): 512 bytes / 4096 bytes
    50. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    53. Disk /dev/sdd: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
    54. Units = sectors of 1 * 512 = 512 bytes
    55. Sector size (logical/physical): 512 bytes / 4096 bytes
    56. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    59. Disk /dev/sdc: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
    60. Units = sectors of 1 * 512 = 512 bytes
    61. Sector size (logical/physical): 512 bytes / 4096 bytes
    62. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    65. Disk /dev/mapper/rootvg-root: 21.5 GB, 21474836480 bytes, 41943040 sectors
    66. Units = sectors of 1 * 512 = 512 bytes
    67. Sector size (logical/physical): 512 bytes / 4096 bytes
    68. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    71. Disk /dev/mapper/rootvg-swap: 34.4 GB, 34359738368 bytes, 67108864 sectors
    72. Units = sectors of 1 * 512 = 512 bytes
    73. Sector size (logical/physical): 512 bytes / 4096 bytes
    74. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    77. Disk /dev/mapper/rootvg-usr: 32.2 GB, 32212254720 bytes, 62914560 sectors
    78. Units = sectors of 1 * 512 = 512 bytes
    79. Sector size (logical/physical): 512 bytes / 4096 bytes
    80. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    83. Disk /dev/mapper/rootvg-home: 32.2 GB, 32212254720 bytes, 62914560 sectors
    84. Units = sectors of 1 * 512 = 512 bytes
    85. Sector size (logical/physical): 512 bytes / 4096 bytes
    86. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    89. Disk /dev/mapper/rootvg-var: 53.7 GB, 53687091200 bytes, 104857600 sectors
    90. Units = sectors of 1 * 512 = 512 bytes
    91. Sector size (logical/physical): 512 bytes / 4096 bytes
    92. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    95. Disk /dev/mapper/rootvg-tmp: 32.2 GB, 32212254720 bytes, 62914560 sectors
    96. Units = sectors of 1 * 512 = 512 bytes
    97. Sector size (logical/physical): 512 bytes / 4096 bytes
    98. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    101. Disk /dev/mapper/rootvg-opt: 53.7 GB, 53687091200 bytes, 104857600 sectors
    102. Units = sectors of 1 * 512 = 512 bytes
    103. Sector size (logical/physical): 512 bytes / 4096 bytes
    104. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    106. [root@prod-dmp-worker-ap01 ~]#
    1. [root@prod-dmp-worker-ap01 ~]# ls /sys/block/sda/device/scsi_disk/
    2. 0:1:0:0
    3. [root@prod-dmp-worker-ap01 ~]# dmesg |grep -i raid
    4. [    5.349010] Raid
    5. [   12.605540] scsi 0:1:0:0: RAID1: handle(0x011e), wwid(0x0961ab99009e942f), pd_count(2), type(SSP)
    6. [root@prod-dmp-worker-ap01 ~]# cat /proc/scsi/scsi 
    7. Attached devices:
    8. Host: scsi0 Channel: 01 Id: 00 Lun: 00
    9.   Vendor: LSI      Model: Logical Volume   Rev: 3000
    10.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    11. Host: scsi0 Channel: 00 Id: 00 Lun: 00
    12.   Vendor: TOSHIBA  Model: AL15SEB12EQ      Rev: 1403
    13.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    14. Host: scsi0 Channel: 00 Id: 01 Lun: 00
    15.   Vendor: TOSHIBA  Model: AL15SEB12EQ      Rev: 1403
    16.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    17. Host: scsi0 Channel: 00 Id: 02 Lun: 00
    18.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    19.   Type:   Direct-Access                    ANSI  SCSI revision: 06
    20. Host: scsi0 Channel: 00 Id: 03 Lun: 00
    21.   Vendor: ATA      Model: HGST HUS728T8TAL Rev: W4J0
    22.   Type:   Direct-Access                    ANSI  SCSI revision: 06