A while ago, in July 2020, a Western Digital Green SSD died without any pre-fail indication. As the data was replicated in a RAID-1 array, there was no data loss.
Now, roughly one and a half years later, the second WD Green SSD from this raid array is now also dead - after a lifetime of 22704 hours (Power_on_hours).
The annoying part? The disk just died out of the blue, without showing any pre-fail conditions such as grown bad blocks or similar. Luckily our monitoring, using the monitoring plugin check_smart, caught the failed disk:
Info: CRITICAL: Drive WDC WDS240G2G0A-00JH30 S/N XXXXXX: Health status: FAILED!
In the (test) server's dmesg, a lot of errors related to this disk could be seen:
root@testserver ~ # dmesg -T
[...]
[Sat Jan 8 09:13:11 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:11 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:11 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:11 2022] ata2: EH complete
[Sat Jan 8 09:13:11 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:11 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:11 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:11 2022] ata2.00: cmd 35/00:01:19:d5:b7/00:00:15:00:00/e0 tag 3 dma 512 out
res 51/04:01:19:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:11 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:11 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:11 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:11 2022] ata2: EH complete
[Sat Jan 8 09:13:11 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:11 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:11 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:11 2022] ata2.00: cmd 35/00:01:19:d5:b7/00:00:15:00:00/e0 tag 5 dma 512 out
res 51/04:01:19:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:11 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:11 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:11 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:11 2022] scsi_io_completion_action: 19 callbacks suppressed
[Sat Jan 8 09:13:11 2022] sd 1:0:0:0: [sdc] tag#5 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[Sat Jan 8 09:13:11 2022] sd 1:0:0:0: [sdc] tag#5 Sense Key : Illegal Request [current]
[Sat Jan 8 09:13:11 2022] sd 1:0:0:0: [sdc] tag#5 Add. Sense: Unaligned write command
[Sat Jan 8 09:13:11 2022] sd 1:0:0:0: [sdc] tag#5 CDB: Write(10) 2a 00 15 b7 d5 19 00 00 01 00
[Sat Jan 8 09:13:11 2022] print_req_error: 19 callbacks suppressed
[Sat Jan 8 09:13:11 2022] blk_update_request: I/O error, dev sdc, sector 364369177 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0
[Sat Jan 8 09:13:11 2022] ata2: EH complete
[Sat Jan 8 09:13:11 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:11 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:11 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:11 2022] ata2.00: cmd 35/00:01:1a:d5:b7/00:00:15:00:00/e0 tag 15 dma 512 out
res 51/04:01:1a:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:11 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:11 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:11 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:11 2022] ata2: EH complete
[Sat Jan 8 09:13:12 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:12 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:12 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:12 2022] ata2.00: cmd 35/00:01:1a:d5:b7/00:00:15:00:00/e0 tag 8 dma 512 out
res 51/04:01:1a:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:12 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:12 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:12 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:12 2022] ata2: EH complete
[Sat Jan 8 09:13:12 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:12 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:12 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:12 2022] ata2.00: cmd 35/00:01:1a:d5:b7/00:00:15:00:00/e0 tag 5 dma 512 out
res 51/04:01:1a:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:12 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:12 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:12 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:12 2022] ata2: EH complete
[Sat Jan 8 09:13:12 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:12 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:12 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:12 2022] ata2.00: cmd 35/00:01:1a:d5:b7/00:00:15:00:00/e0 tag 7 dma 512 out
res 51/04:01:1a:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:12 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:12 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:12 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:12 2022] ata2: EH complete
[Sat Jan 8 09:13:12 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:12 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:12 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:12 2022] ata2.00: cmd 35/00:01:1a:d5:b7/00:00:15:00:00/e0 tag 9 dma 512 out
res 51/04:01:1a:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:12 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:12 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:12 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:12 2022] ata2: EH complete
[Sat Jan 8 09:13:12 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:12 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:12 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:12 2022] ata2.00: cmd 35/00:01:1a:d5:b7/00:00:15:00:00/e0 tag 11 dma 512 out
res 51/04:01:1a:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:12 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:12 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:12 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#11 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#11 Sense Key : Illegal Request [current]
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#11 Add. Sense: Unaligned write command
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#11 CDB: Write(10) 2a 00 15 b7 d5 1a 00 00 01 00
[Sat Jan 8 09:13:12 2022] blk_update_request: I/O error, dev sdc, sector 364369178 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0
[Sat Jan 8 09:13:12 2022] ata2: EH complete
[Sat Jan 8 09:13:12 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:12 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:12 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:12 2022] ata2.00: cmd 35/00:01:1b:d5:b7/00:00:15:00:00/e0 tag 6 dma 512 out
res 51/04:01:1b:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:12 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:12 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:12 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#10 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#10 Sense Key : Illegal Request [current]
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#10 Add. Sense: Unaligned write command
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#10 CDB: Write(10) 2a 00 15 b7 d5 1b 00 00 01 00
[Sat Jan 8 09:13:12 2022] blk_update_request: I/O error, dev sdc, sector 364369179 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0
[Sat Jan 8 09:13:12 2022] ata2: EH complete
[Sat Jan 8 09:13:12 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:12 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:12 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:12 2022] ata2.00: cmd 35/00:01:1c:d5:b7/00:00:15:00:00/e0 tag 2 dma 512 out
res 51/04:01:1c:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:12 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:12 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:12 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#8 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#8 Sense Key : Illegal Request [current]
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#8 Add. Sense: Unaligned write command
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#8 CDB: Write(10) 2a 00 15 b7 d5 1c 00 00 01 00
[Sat Jan 8 09:13:12 2022] blk_update_request: I/O error, dev sdc, sector 364369180 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0
[Sat Jan 8 09:13:12 2022] ata2: EH complete
[Sat Jan 8 09:13:12 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:12 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:12 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:12 2022] ata2.00: cmd 35/00:01:1d:d5:b7/00:00:15:00:00/e0 tag 15 dma 512 out
res 51/04:01:1d:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:12 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:12 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:12 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#13 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#13 Sense Key : Illegal Request [current]
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#13 Add. Sense: Unaligned write command
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#13 CDB: Write(10) 2a 00 15 b7 d5 1e 00 00 01 00
[Sat Jan 8 09:13:12 2022] blk_update_request: I/O error, dev sdc, sector 364369182 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0
[Sat Jan 8 09:13:12 2022] ata2: EH complete
[Sat Jan 8 09:13:12 2022] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[Sat Jan 8 09:13:12 2022] ata2.00: irq_stat 0x40000001
[Sat Jan 8 09:13:12 2022] ata2.00: failed command: WRITE DMA EXT
[Sat Jan 8 09:13:12 2022] ata2.00: cmd 35/00:01:1f:d5:b7/00:00:15:00:00/e0 tag 17 dma 512 out
res 51/04:01:1f:d5:b7/00:00:15:00:00/e0 Emask 0x1 (device error)
[Sat Jan 8 09:13:12 2022] ata2.00: status: { DRDY ERR }
[Sat Jan 8 09:13:12 2022] ata2.00: error: { ABRT }
[Sat Jan 8 09:13:12 2022] ata2.00: configured for UDMA/133 (device error ignored)
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#10 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#10 Sense Key : Illegal Request [current]
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#10 Add. Sense: Unaligned write command
[Sat Jan 8 09:13:12 2022] sd 1:0:0:0: [sdc] tag#10 CDB: Write(10) 2a 00 15 b7 d5 1f 00 00 01 00
[Sat Jan 8 09:13:12 2022] blk_update_request: I/O error, dev sdc, sector 364369183 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0
[Sat Jan 8 09:13:12 2022] ata2: EH complete
Linux's mdadm also detected the SSD as failed and removed it from the RAID-1 array:
root@testserver ~ # cat /proc/mdstat
Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10]
md3 : active raid1 sdb1[1] sdc1[0](F)
234298968 blocks super 1.2 [2/1] [_U]
bitmap: 2/2 pages [8KB], 65536KB chunk
[...]
Hence the second monitoring plugin, check_raid, also alerted:
Info: CRITICAL: mdstat:[md3(223.44 GiB raid1):F:sdc1:_U, md2(884.82 GiB raid1):UU, md0(23.27 GiB raid1):UU, md1(23.27 GiB raid1):UU]
That's the rather disappointing part of this SSD becoming defective: The drive's SMART attributes show no indications of a pre-fail event (such as grown bad blocks, re-allocated blocks or similar):
root@testserver ~ # smartctl -a /dev/sdc
smartctl 6.6 2017-11-05 r4594 [x86_64-linux-5.10.0-0.bpo.7-amd64] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: WD Blue / Red / Green SSDs
Device Model: WDC WDS240G2G0A-00JH30
Serial Number: XXXXXXXX
LU WWN Device Id: 5 001b44 8b9fb47d1
Firmware Version: UF500000
User Capacity: 240,065,183,744 bytes [240 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2 T13/2015-D revision 3
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Sat Jan 8 10:51:25 2022 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: FAILED!
Drive failure expected in less than 24 hours. SAVE ALL DATA.
No failed Attributes found.
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 32) The self-test routine was interrupted
by the host with a hard or soft reset.
Total time to complete Offline
data collection: ( 120) seconds.
Offline data collection
capabilities: (0x15) SMART execute Offline immediate.
No Auto Offline data collection support.
Abort Offline collection upon new
command.
No Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
No Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 42) minutes.
SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
5 Reallocated_Sector_Ct 0x0032 100 100 000 Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 22704
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 38
165 Block_Erase_Count 0x0032 100 100 000 Old_age Always - 54090
166 Minimum_PE_Cycles_TLC 0x0032 100 100 --- Old_age Always - 628
167 Max_Bad_Blocks_per_Die 0x0032 100 100 --- Old_age Always - 0
168 Maximum_PE_Cycles_TLC 0x0032 100 100 --- Old_age Always - 700
169 Total_Bad_Blocks 0x0032 100 100 --- Old_age Always - 235
170 Grown_Bad_Blocks 0x0032 100 100 --- Old_age Always - 0
171 Program_Fail_Count 0x0032 100 100 000 Old_age Always - 0
172 Erase_Fail_Count 0x0032 100 100 000 Old_age Always - 0
173 Average_PE_Cycles_TLC 0x0032 100 100 000 Old_age Always - 628
174 Unexpected_Power_Loss 0x0032 100 100 000 Old_age Always - 24
184 End-to-End_Error 0x0032 100 100 --- Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
188 Command_Timeout 0x0032 100 100 --- Old_age Always - 0
194 Temperature_Celsius 0x0022 054 057 000 Old_age Always - 46 (Min/Max 17/57)
199 UDMA_CRC_Error_Count 0x0032 100 100 --- Old_age Always - 0
230 Media_Wearout_Indicator 0x0032 100 100 000 Old_age Always - 0x9a367d3c9a36
232 Available_Reservd_Space 0x0033 100 100 005 Pre-fail Always - 100
233 NAND_GB_Written_TLC 0x0032 100 100 --- Old_age Always - 157342
234 NAND_GB_Written_SLC 0x0032 100 100 000 Old_age Always - 412445
241 Host_Writes_GiB 0x0030 100 100 000 Old_age Offline - 135873
242 Host_Reads_GiB 0x0030 100 100 000 Old_age Offline - 14003
244 Temp_Throttle_Status 0x0032 000 100 --- Old_age Always - 0
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
Selective Self-tests/Logging not supported
At least the drive was still accessible to retrieve the current SMART values. Compared to the previous WD Green SSD failure, this drive worked well for 22704 hours. The previous drive already stopped working after 9833 hours.
The defect drive was now replaced with a larger Western Digital Blue SSD to also grow the mdadm RAID array.
Looking at previous SSD failures of the past years:
There's no official recommendation when to replace a SSD drive, but there's one more thing to look at: The TBW warranty limit.
SSD vendors usually give 3 or 5 years of warranty for a SSD drive. With one exception: The TBW (Total Bytes Written) value of the SSD cannot exceeded the warranty limit. This counter shows the number of Bytes written on the SSD. According to the WD Green SSD datasheet, the warranty limit is set to 80 TB:
Looking at the SMART value 241 from above's output (which is shown as Host_Writes_GiB), indicates that a total of 135873 GB (= 132.69 TB) were written on this SSD. The current value is clearly above the 80 TB TBW limit. It seems that this limit was not simply chosen for warranty (money back) decisions, but also seems to show a life time threshold.
Note: While working on a TBW Check in the check_smart monitoring plugin, I have created an overview of SSD drives and their TBW warranty limits.
Update: September 2023
After a physical move of the machine running the remaining WD Green SSD (received as replacement for the first dead WD Green without pre-fail indications), this WD Green 240 GB SSD is now dead, too. Similar to the other WD Green SSDs, the connectivity was just gone. The BIOS would not detect any link anymore of that drive.
Connected to a SATA to USB adapter (a Sharkoon Quickport Combo) did not show any device either.
However at least this time, this last WD Green 240 GB SSD lived for almost exactly 3 years, just a few days after the warranty end. The last known Power_On_Hours value was 33700:
A possible indicator could be the P/E Cycles on that drive. Looking at the last few months, there was a sharp in crease in PE Cycles starting at the end of July 2023:
The remaining question is of course the TBW value. How many Terrabytes Written happened on this SSD just before it died. The answer: 114'000 GB.
That translates to either 114 TB or 111 TB, depending on base 1000 or base 1024. But both values are clearly above the stated 80 TB "warranty" value. Once again, the TBW value needs to be monitored as a "safe" value. Not just for these cheap WD Green drives, but for all SSD drives.
Melroy from Netherlands wrote on Nov 17th, 2023:
In my server I use to buy WD Red spinning disks (so before the SSD time period). These disks from WD were also failing way too fast and too often. I now went for a WD Black NVMes those are running fine! I'm also using Crucial SSDs, which seems also doing a good job.
DeeFuse from wrote on Mar 24th, 2022:
I got 3 WD Green 120GB m.2 SSDs which failed after roughly the same time, but with only ~5TBW.
I had Windows 10 on them with no heavy read/write work on them.
All 3 behaved the same as yours with SMART not reporting anything to worry about.
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