[kwlug-disc] Disk longevity ...

[Khalid Baheyeldin]

Here is something surprising (to me at least) ...

My home server has been running for over 11 years continuously, and when I
saw the statistics on S.M.A.R.T and the file system, I thought these must
be shared.

The 'server' is an Acer Desktop, circa 2010 AMD Athlon II X4 with 4GB of
RAM, with a BIOS only (no UEFI).
The hard disk is a 1TB Hitachi

According to SMART, as of late January:

Model Family:     Hitachi Deskstar 7K1000.B
Device Model:     Hitachi HDT721010SLA360
Firmware Version: ST6OA31B
User Capacity:    1,000,204,886,016 bytes [1.00 TB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    7200 rpm
ATA Version is:   ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 2.6, 3.0 Gb/s

Here are the relevant entries:

  9 Power_On_Hours          0x0012   086   086   000    Old_age   Always
    -       101024
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always
    -       65

That 101024 hours is 11.5 years of the disk spinning continuously with 65
power cycles over that period.

And per tune2fs, this ext3 file system was created on July 2010!

Last mounted on:          /
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index
filetype needs_recovery sparse_super large_file
Filesystem flags:         signed_directory_hash
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              60317696
Block count:              241244080
Reserved block count:     12062204
Free blocks:              125567107
Free inodes:              58960270
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      966
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   256
Filesystem created:       Mon Jul 19 15:48:26 2010
Mount count:              2
Maximum mount count:      23
Last checked:             Fri Dec 31 15:44:08 2021
Check interval:           15552000 (6 months)
Next check after:         Wed Jun 29 16:44:08 2022
Lifetime writes:          13 TB

The disk is only half full (~ 500GB).

I am impressed that a spinning disk can last that long.

The Hitachi disk was copied to another disk that is ext4, and is running on
the new motherboard with UEFI, USB 3.0 and SATA 6Gbps.

And a note to Ron!
The above shows I have been upgrading in-place continually from at least
Ubuntu 10.04 (and maybe 8.04) to 20.04.
No fresh install with every LTS release. At least for a server with no GUI
and desktop apps.
--
Khalid Baheyeldin
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