[smartmontools-support] Reporting of disk capacity

Rhialto rhialto at falu.nl
Thu Sep 19 20:59:59 CEST 2019


Hello,

I just bought a disk, and its smartctl -x output starts like this:

smartctl 7.0 2018-12-30 r4883 [NetBSD 8.1 amd64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD100EFAX-68LHPN0
Serial Number:    xxxxxxxx
LU WWN Device Id: xxxxxxxxxxxxxxxxxx
Firmware Version: 83.H0A83
User Capacity:    10,000,831,348,736 bytes [10.0 TB]


I don't agree with the "[10.0 TB]" at the end of the last line I quoted.
Calling this disk 10 TB is a lie that the drive manufacturers like to
perpetrate, but that does not mean that we IT specialists need to go
along with it. This disk is plain and simple only 9.095 TB large (9314
GB).

I would like to see the real number of mega/giga/terabytes there, not
the fantasy value (aka lie) that the manufacturer likes to use.

(I'm not subscribed to this list; please Cc replies)

-Olaf.
-- 
Olaf 'Rhialto' Seibert -- rhialto at falu dot nl
___  Anyone who is capable of getting themselves made President should on
\X/  no account be allowed to do the job.       --Douglas Adams, "THGTTG"
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