No hard disks were found for installation

while installing SLES12SP2 on IBM 8284-22A, getting error No hard disks were found for installation

sd 1:0:2:0: [sdb] Read Capacity(16) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 1:0:1:0: [sda] Read Capacity(16) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 1:0:2:0: [sdb] Sense Key : Not Ready [current]
sd 1:0:1:0: [sda] Sense Key : Not Ready [current]
sd 1:0:2:0: [sdb] Add. Sense: Logical unit not ready, initializing command required
sd 1:0:1:0: [sda] Add. Sense: Logical unit not ready, initializing command required
sd 1:0:2:0: [sdb] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 1:0:1:0: [sda] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 1:0:1:0: [sda] Sense Key : Not Ready [current]
sd 1:0:2:0: [sdb] Sense Key : Not Ready [current]
sd 1:0:1:0: [sda] Add. Sense: Logical unit not ready, initializing command required
sd 1:0:2:0: [sdb] Add. Sense: Logical unit not ready, initializing command required
sd 1:0:1:0: [sda] Test WP failed, assume Write Enabled
sd 1:0:2:0: [sdb] Test WP failed, assume Write Enabled
sd 1:0:1:0: [sda] Asking for cache data failed
sd 1:0:2:0: [sdb] Asking for cache data failed
sd 1:0:2:0: [sdb] Assuming drive cache: write through
sd 1:0:1:0: [sda] Assuming drive cache: write through
sd 1:0:2:0: [sdb] Spinning up disk…
sd 1:0:1:0: [sda] Spinning up disk…
.

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