I’ve got a pretty old 6TB disk ZFS array. They still happily spin away and are serving data, every day.
Device Statistics (GP Log 0x04)
Page Offset Size Value Flags Description
0x01 ===== = = === == General Statistics (rev 2) ==
0x01 0x008 4 87 --- Lifetime Power-On Resets
0x01 0x018 6 74249598370 --- Logical Sectors Written
0x01 0x020 6 980340453 --- Number of Write Commands
0x01 0x028 6 700226203723 --- Logical Sectors Read
0x01 0x030 6 4512715353 --- Number of Read Commands
0x03 ===== = = === == Rotating Media Statistics (rev 1) ==
0x03 0x008 4 64252 --- Spindle Motor Power-on Hours
0x03 0x010 4 64252 --- Head Flying Hours
0x03 0x018 4 21808 --- Head Load Events
0x03 0x020 4 0 --- Number of Reallocated Logical Sectors
0x03 0x028 4 10008480 --- Read Recovery Attempts
0x03 0x030 4 0 --- Number of Mechanical Start Failures
Over 7 years of run time. Nice…
I should buy new drives.