On Sat, 2025-08-23 at 11:18 -0600, home user via users wrote: > > Personally, I still have more faith in harddrives than SSDs for data. > Why? I'm not skeptical; this is a sincere question. > > So I have a SSD for an OS & programs drive, with data on a harddrive. > My sense is that with a hard drive, there's a real chance of getting > advance warning (via S.M.A.R.T.) when it's near failure. But with SSDs, > I've not seen or heard of any monitoring; failure is sudden, no > warning. Are SSDs S.M.A.R.T. monitored? Yes, SSDs are SMART monitored: $ sudo smartctl -a /dev/nvme1n1 smartctl 7.5 2025-04-30 r5714 [x86_64-linux-6.15.10-200.fc42.x86_64] (local build) Copyright (C) 2002-25, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Number: WD_BLACK SN770 2TB Serial Number: 23364Y804997 Firmware Version: 731100WD PCI Vendor/Subsystem ID: 0x15b7 IEEE OUI Identifier: 0x001b44 Total NVM Capacity: 2,000,398,934,016 [2.00 TB] Unallocated NVM Capacity: 0 Controller ID: 0 NVMe Version: 1.4 Number of Namespaces: 1 Namespace 1 Size/Capacity: 2,000,398,934,016 [2.00 TB] Namespace 1 Formatted LBA Size: 512 Namespace 1 IEEE EUI-64: 001b44 8b4c6efc5f Local Time is: Sat Aug 23 18:59:19 2025 BST Firmware Updates (0x14): 2 Slots, no Reset required Optional Admin Commands (0x0017): Security Format Frmw_DL Self_Test Optional NVM Commands (0x00df): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat Timestmp Verify Log Page Attributes (0x7e): Cmd_Eff_Lg Ext_Get_Lg Telmtry_Lg Pers_Ev_Lg Log0_FISE_MI Telmtry_Ar_4 Maximum Data Transfer Size: 256 Pages Warning Comp. Temp. Threshold: 84 Celsius Critical Comp. Temp. Threshold: 88 Celsius Namespace 1 Features (0x02): NA_Fields Supported Power States St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat 0 + 5.40W 5.40W - 0 0 0 0 0 0 1 + 3.50W 3.00W - 0 0 0 0 0 0 2 + 2.40W 2.00W - 0 0 0 0 0 0 3 - 0.0150W - - 3 3 3 3 1500 2500 4 - 0.0050W - - 4 4 4 4 10000 6000 5 - 0.0033W - - 5 5 5 5 176000 25000 Supported LBA Sizes (NSID 0x1) Id Fmt Data Metadt Rel_Perf 0 + 512 0 2 1 - 4096 0 1 === START OF SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED SMART/Health Information (NVMe Log 0x02, NSID 0xffffffff) Critical Warning: 0x00 Temperature: 38 Celsius Available Spare: 100% Available Spare Threshold: 10% Percentage Used: 1% Data Units Read: 24,894,096 [12.7 TB] Data Units Written: 39,585,240 [20.2 TB] Host Read Commands: 254,270,639 Host Write Commands: 946,185,192 Controller Busy Time: 761 Power Cycles: 439 Power On Hours: 6,917 Unsafe Shutdowns: 14 Media and Data Integrity Errors: 0 Error Information Log Entries: 0 Warning Comp. Temperature Time: 0 Critical Comp. Temperature Time: 0 Temperature Sensor 1: 58 Celsius Temperature Sensor 2: 37 Celsius Error Information (NVMe Log 0x01, 16 of 256 entries) No Errors Logged Self-test Log (NVMe Log 0x06, NSID 0xffffffff) Self-test status: No self-test in progress No Self-tests Logged However my mirrored backup drives are 1TB SATAs because that's what I had lying around and speed is not important. Borg does compression and deduplication so the size is plenty. I have an incremental nightly backup, then a weekly, a three-monthly and a yearly and it all fits comfortably. Obviously this depends on your usage and frequency of changes to the data. poc -- _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
