SMART
From Leo's Notes
This page was last edited on 18 December 2019, at 18:20.
SMART (Self-Monitoring, Analysis and Reporting Technology) is a monitoring system included in all computer hard drives and solid state drives.
Usage
On Linux, install the smartmon-tools package. Use the smartctl utility.
Show Disk Information
To show all capabilities, monitored attributes, errors, etc. of a particular disk, run:
# smartctl -a /dev/sda
Run Self-Test
Use the short option to begin a self-test on the device. To abort a test, use the -X or --abort option.
Attributes
Some attributes of note.
- Reallocated_Sector_Ct
- Disks automatically remap bad sectors to a pool of reserved sectors. This attribute is the number of sectors that have been reallocated.
- Current_Pending_Sector
- The number of sectors that the disk had issues reading. The sector will be reallocated when either: 1. the sector can be read properly or 2. the sector is written over.