Datasheet

Intel® Solid-State Drive DC S3610 Series
Example Use Cases
The Timed Workload Endurance attributes described in this section are intended to be used to
measure the amount of media wear that the drive is subjected to during a timed workload.
Ideally, the system that the drive is being used in should be capable of issuing SMART commands.
Otherwise, provisions have been provided to allow the media wear attributes to be persistent so the
drive can be moved to a SMART capable system to read out the drive wear attribute values.
Use Case 1 – With a System Capable of SMART Commands
1. On a SMART capable system, issue the SMART EXECUTE OFF-LINE IMMEDIATE (D4h)
sub-command 40h to reset the drive wear attributes.
2. Run the workload to be evaluated for at least 60 minutes. Otherwise the drive wear attrib-
utes will not be available.
3. Read out the drive wear attributes with the SMART READ DATA (D0h) command.
Use Case 2 – With a System Not Capable of SMART Commands
1. On a SMART capable system, issue the SMART EXECUTE OFF-LINE IMMEDIATE (D4h)
sub-command 40h to reset the drive wear attributes.
2. Move the drive to the system where the workload will be measured (and not capable of
SMART commands).
3. Run the workload to be evaluated for at least 60 minutes. Otherwise the drive wear attrib-
utes will not be available.
4. Do a clean system power down by issuing the ATA STANDBY IMMEDIATE command prior
to shutting down the system. This will store all the drive wear SMART attributes to persis-
tent memory within the drive.
5. Move the drive to a SMART capable system.
6. Read out the drive wear attributes with the SMART READ DATA (D0h) command within 59
seconds after power-up.
Example Calculation of Drive Wear
The following is an example of how the drive wear attributes can be used to evaluate the impact of a
given workload. The Host Writes SMART attribute (E1h) can also be used to calculate the amount of
data written by the host during the workload by reading this attribute before and after running the
workload. This example assumes that the steps shown in “Example Use Cases” on page 18 were
followed to obtain the following attribute values:
• Timed Workload Media Wear (E2h) has a raw value of 16. Therefore, the percentage wear =
16/1024 = 0.016%.
• Timed Workload Host Read/Write Ratio (E3h) has a normalized value of 80, indicating that
80% of operations were reads.
• Workload Timer (E4h) has a raw value of 500. Therefore the workload ran for 500 minutes.
• Host Writes Count (E1h) had a raw value of 100,000 prior to running the workload and a
value of 130,000 at the end of the workload. Therefore, the number of sectors written by
the host during the workload was 30,000 * 65,535 = 1,966,050,000 sectors or
1,966,050,000 * 512/1,000,000,000 = 1,007 GB.
Product Specification March 2015
24 331342-003US