I had an unclean shut down yesterday even thought I had a ups.  Now I have 2 unmountable disks,  I have enclosed a before diag and an after.  Some assistance would be appreciated.

tower-diagnostics-20210726-2139.zip tower-diagnostics-20210928-1533.zip

Log is filled with ATA errors for multiple devices similar to these:

 

Sep 28 13:58:22 Tower kernel: ata10: softreset failed (1st FIS failed)
Sep 28 13:58:29 Tower kernel: ata10: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
Sep 28 13:58:29 Tower kernel: ata10.00: ATA-10: ST12000VN0007-2GS116,             ZJV05NBM, SC60, max UDMA/133
Sep 28 13:58:29 Tower kernel: ata10.00: 23437770752 sectors, multi 16: LBA48 NCQ (depth 32), AA
Sep 28 13:58:29 Tower kernel: ata10.00: configured for UDMA/133
Sep 28 13:58:29 Tower kernel: scsi 10:0:0:0: Direct-Access     ATA      ST12000VN0007-2G SC60 PQ: 0 ANSI: 5
Sep 28 13:58:29 Tower kernel: sd 10:0:0:0: Attached scsi generic sg7 type 0
Sep 28 13:58:29 Tower kernel: sd 10:0:0:0: [sdh] 23437770752 512-byte logical blocks: (12.0 TB/10.9 TiB)
Sep 28 13:58:29 Tower kernel: sd 10:0:0:0: [sdh] 4096-byte physical blocks
Sep 28 13:58:29 Tower kernel: sd 10:0:0:0: [sdh] Write Protect is off
Sep 28 13:58:29 Tower kernel: sd 10:0:0:0: [sdh] Mode Sense: 00 3a 00 00
Sep 28 13:58:29 Tower kernel: sd 10:0:0:0: [sdh] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Sep 28 13:58:29 Tower kernel: ata10.00: exception Emask 0x10 SAct 0x4000 SErr 0x90202 action 0xe frozen
Sep 28 13:58:29 Tower kernel: ata10.00: irq_stat 0x00400000, PHY RDY changed
Sep 28 13:58:29 Tower kernel: ata10: SError: { RecovComm Persist PHYRdyChg 10B8B }
Sep 28 13:58:29 Tower kernel: ata10.00: failed command: READ FPDMA QUEUED
Sep 28 13:58:29 Tower kernel: ata10.00: cmd 60/08:70:00:00:00/00:00:00:00:00/40 tag 14 ncq dma 4096 in
Sep 28 13:58:29 Tower kernel:         res 40/00:70:00:00:00/00:00:00:00:00/40 Emask 0x10 (ATA bus error)
Sep 28 13:58:29 Tower kernel: ata10.00: status: { DRDY }
Sep 28 13:58:29 Tower kernel: ata10: hard resetting link

 

Check/replace all cables on the affected disks, including power, power back up and see if the errors went way, or post new diags.