I’ve been utilizing a 128GB NVMe drive on my TrueNAS (formerly FreeNAS) system since it was assembled in 2016. I’m looking to add in two more 1TB NVMe drives as a mirrored vdev and migrate my TrueNAS apps from the slower hard drives to the faster NVMe drives while keeping my existing vdev pool of eight hard drives in a RAIDZ2 configuration. Since I’m running 25.10.0.1 now, this should be fairly simple.
One of my concerns is the drive health. I tried the command smartctl -a /dev/nvme0 which gave me the following report:
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.12.33-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Number: SAMSUNG MZVPV128HDGM-00000
Serial Number: S1XVNYAGC01633
Firmware Version: BXW7300Q
PCI Vendor/Subsystem ID: 0x144d
IEEE OUI Identifier: 0x002538
Controller ID: 1
NVMe Version: <1.2
Number of Namespaces: 1
Namespace 1 Size/Capacity: 128,035,676,160 [128 GB]
Namespace 1 Utilization: 127,785,336,832 [127 GB]
Namespace 1 Formatted LBA Size: 512
Local Time is: Thu Nov 20 13:42:20 2025 CST
Firmware Updates (0x06): 3 Slots
Optional Admin Commands (0x0007): Security Format Frmw_DL
Optional NVM Commands (0x001f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat
Log Page Attributes (0x01): S/H_per_NS
Maximum Data Transfer Size: 32 Pages
Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
0 + 9.00W - - 0 0 0 0 5 5
1 + 4.60W - - 1 1 1 1 30 30
2 + 3.80W - - 2 2 2 2 100 100
3 - 0.0700W - - 3 3 3 3 500 5000
4 - 0.0050W - - 4 4 4 4 2000 22000
Supported LBA Sizes (NSID 0x1)
Id Fmt Data Metadt Rel_Perf
0 + 512 0 0
=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
SMART/Health Information (NVMe Log 0x02)
Critical Warning: 0x00
Temperature: 37 Celsius
Available Spare: 100%
Available Spare Threshold: 10%
Percentage Used: 11%
Data Units Read: 5,405,440 [2.76 TB]
Data Units Written: 7,782,300 [3.98 TB]
Host Read Commands: 64,843,322
Host Write Commands: 1,143,226,878
Controller Busy Time: 2,252
Power Cycles: 193
Power On Hours: 82,056
Unsafe Shutdowns: 61
Media and Data Integrity Errors: 0
Error Information Log Entries: 199
Error Information (NVMe Log 0x01, 16 of 64 entries)
Num ErrCount SQId CmdId Status PELoc LBA NSID VS Message
0 199 0 0x4005 0x4004 0x000 0 1 - Invalid Field in Command
1 198 0 0x000a 0x4004 0x000 0 0 - Invalid Field in Command
2 197 0 0x0013 0x4016 0x000 0 1 - Invalid Namespace or Format
3 196 0 0x0006 0x4004 0x000 0 0 - Invalid Field in Command
4 195 0 0x0019 0x4004 0x000 0 1 - Invalid Field in Command
5 194 0 0x000e 0x4004 0x000 0 0 - Invalid Field in Command
6 193 0 0x0013 0x4016 0x000 0 1 - Invalid Namespace or Format
7 192 0 0x0006 0x4004 0x000 0 0 - Invalid Field in Command
8 191 0 0x0009 0x4004 0x000 0 1 - Invalid Field in Command
9 190 0 0x0006 0x4004 0x000 0 0 - Invalid Field in Command
10 189 0 0x0013 0x4016 0x000 0 1 - Invalid Namespace or Format
11 188 0 0x0006 0x4004 0x000 0 0 - Invalid Field in Command
12 187 0 0x0019 0x4004 0x000 0 1 - Invalid Field in Command
13 186 0 0x000e 0x4004 0x000 0 0 - Invalid Field in Command
14 185 0 0x0013 0x4016 0x000 0 1 - Invalid Namespace or Format
15 184 0 0x0006 0x4004 0x000 0 0 - Invalid Field in Command
... (48 entries not read)
Self-tests not supported
So, I’m guessing, based upon the Percentage Used field, that I have 89% of life left. Am i correct?
Since I have a Netdata license installed, is there a way to see this life remaining percentage in that container? I checked System → Storage → Disks and see my drive nvme0n1, but the information appears limited.