I have several WD20EARS green drives. They have worked OK, and seem to mount normally. They used to work well. But now the write speed is unbelievably slow at 1 Mbyte/second. I have reformatted, and that doesn’t change anything.
I have tried connecting to different systems (Windows and Linux) and always get the same results.
From Linux, I tried to run the Smart tools. The output is extremely slow - it takes about a minute to print this bit of text line by line:
$ sudo smartctl -a /dev/sda1
smartctl 5.41 2011-06-09 r3365 [armv7l-linux-4.1.17-v7+] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net
Vendor: WDC WD20
Product: EARS-00MVWB0
Revision:
User Capacity: 2,000,398,934,016 bytes [2.00 TB]
Logical block size: 512 bytes
Device type: disk
Local Time is: Sat Apr 16 13:17:17 2016 CDT
Device supports SMART and is Enabled
Temperature Warning Disabled or Not Supported
SMART Health Status: OK
Error Counter logging not supported
Device does not support Self Test logging
So it says SMART is enabled, but doesn’t give any data from the drive?
I’ve seen various postings on the WD20EARS slowness over the years, but never any solution. Can anyone point me to a solution for this problem?
