Intel 330 Support

[gnargl]

When using smartctl with my Intel 330 SSD, two things caught my eye:

• The unknown attribute #249: According to [1], this should be the total number of NAND writes.

• The "Power_On_Hours" attribute: smartctl 5.42 returned some permanently changing number, so I tried the current trunk version. Now the values is returned as 4 numbers; the first one seems to be the number of hours plus a big offset, but what do the three in the brackets mean? The last one is always zero and the first one overflows from 255 to 0 after about a minute. If they are just the values of the "remaining three bytes" mentioned in [1], then the firmware probably returns garbage. Any Hints?

[1] Intel Solid-State Drive 330 Series Specification, ​http://www.intel.com/content/www/us/en/solid-state-drives/ssd-330-specification.html

[gnargl]

output of "smartctl -q noserial -i -A -l devstat /dev/sda"

[Christian Franke]

Replying to gnargl:

the first one seems to be the number of hours plus a big offset, but what do the three in the brackets mean?

These are the upper bytes from the 48-bit raw value. SandForce based devices typically use a 32-bit hours count and a 24-bit milliseconds count. This device will be added to drivedb.h soon. Meantime try -v 9,msec24hour32.

The very large 890000+ initial hours count is probably a firmware bug and was also reported for Intel 520. My ​request in Intel Forum provided no result. Device statistics apparently reports the correct hours count.

[Christian Franke]

r3551.