We understand your question of why the Endurance Rating is set as 5 years assuming a client workload of up to 70 GB of host writes per day. This is for all the Intel® SSD 750 Series models, regardles of the size of the drive. We will check on this and will provide further updates soon.
I would like to mention a very important fact based on your description of the environment.
- The Intel® SSD 750 Series is a consumer drive designed for performance, even though it may exceed the reliability specs of other comparable drives, it is not meant to be used for write-intensive usage nor Data Center Environments.
- Since you plan to use the SSD as a cache drive for a bussiness system, we would advise to consider a drive of the Intel® SSD Data Center Family for NVMe*, that are designed for read- and write-intensive storage workloads, at predictable rates for absolutely smooth data center operation. Currently, there are different PCIe* NVMe* series that exceed the endurance rating you would get with the 750. For example: Intel® SSD DC P3500 Series, Intel® SSD DC P3600 Series, Intel® SSD DC P3608 Series and Intel® SSD DC P3700 Series.
seems there is an error in the spec pdf of the 750 1.2TB because endurance is only 127TBW (which means 30 hours at 1.2GB/S). If it's 70GB / day on 5 years, it should be 127PBW ?
We double checked the Endurance Rating value and the specification document has the correct one.
If the drive can endure 70 GB host writes per day, for 5 years, and the year has 365 days, then: 70 x 365 x 5 = 127 750 GB.
Then 127 750 GB equals to 127.75 TB. (Considering that 1PB = 1015 bytes).
Please keep in mind that the advertised performance is based on international testing standards, however, we would expect our SSDs to exceed these values in most cases.