Disk

[JD]

which info retrieved by sdparam or hdparam would indicate
that the drive is reaching it's EOL.

I'm getting a lot of these errors:

[12152.032068] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 
frozen
[12152.032082] ata4.00: failed command: READ DMA
[12152.032101] ata4.00: cmd c8/00:08:27:14:3e/00:00:00:00:00/e1 tag 0 
dma 4096 in
[12152.032101]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 
0x4 (timeout)
[12152.032108] ata4.00: status: { DRDY }
[12152.032123] ata4: hard resetting link
[12152.592066] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[12152.601327] ata4.00: configured for UDMA/100
[12152.601344] ata4.00: device reported invalid CHS sector 0
[12152.601370] sd 3:0:0:0: [sdc]
[12152.601375] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[12152.601381] sd 3:0:0:0: [sdc]
[12152.601385] Sense Key : Aborted Command [current] [descriptor]
[12152.601393] Descriptor sense data with sense descriptors (in hex):
[12152.601397]         72 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00
[12152.601416]         00 00 00 00
[12152.601427] sd 3:0:0:0: [sdc]
[12152.601432] Add. Sense: No additional sense information
[12152.601439] sd 3:0:0:0: [sdc] CDB:
[12152.601442] Read(10): 28 00 01 3e 14 27 00 00 08 00
[12152.601460] end_request: I/O error, dev sdc, sector 20845607
[12152.601506] ata4: EH complete