Hatteland HD 12T21 MMC Series, User Manual

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SSD Selection Guide
Appendix
IND100077-130
Example (based on Intel® SSD 320 Series)
A general assessment based on requirements to determine the most suitable SSD device. When these factors are
known or specified in detail, we can calculate and conclude which SSD device is most suitable (see bottom of page).
Question Client Answer
We need to know how much data is written to disk
(worst case) during a known time period (per second,
minute, hour etc.) and the nature of this data?
Chart Data : 2GB /Week
Log/User Data: : 10kB /Sec
Swap Data : 100kB /Sec
How much space is used on as fixed for your
application?
40GB over : Chart Data Area (typical Chart size is 30GB)
1GB : Log Data and User Data area
4GB : Swap Area
How long time shall this disk work with no problems? 5 years
Example Calculation and Conclusion
Calculation / Estimation of data rate:
Step Factors Formula Result
1 Chart Data: 2GB /Week 2GB * 52 = 104 GB /Year
Log data and User Data: 10kB /Sec 10kB * 60 * 60 * 24 * 365 = 315 GB /Year
Swap Data: 100kB /Sec 100kB * 60 * 60 * 24 * 365 = 3.15 TB /Year
Total = 3.57 TB/Year
2 Required lifetime: 5 years
3 Calculate total amount of data
written to the SSD during its whole
lifetime:
3.57TB * 5 = 17.8 TB
4 Select Disk Using Table Conclusion = 300GB SSD Device shall be used.
Measure of number of write cycles (Intel® Solid-State Drive Toolbox software)
Download Software from: https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=18455
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