Here are some relevant aspects regarding Wear Leveling and SSD relialibity.
- The Wear Leveling count is based on the Erase Cycles, not on host or NAND writes, so those values will not be proportional between them. Wear leveling is more accurate to measure the actual wear of the NAND chips.
- We will check further on the NAND and Host bytes written values when shown for the Intel® SSD 750 Series. In order to provide more accurate recommendations we would like to get the details of your system (PC details, SSD driver and firmware version, OS, etc). The best method is to obtain the SSD toolbox log from your drive, this can done with the "Export" button in the Drive Summary of Intel® SSD 750.
Once you get the file, please attach it to the thread using the Advanced Editor. Or, let me know if you would like to provide the log privately.
OK, sure erase cycles do not relate to host/nand writes. But I have plenty of space available on the drive, I'm not sure why it would be so heavily erasing things.
Also in the past day, the percentage has now gone down to 82%.
Windows 10 Pro x64
Intel 750 SSD PCi-e 400GB
Intel SSD Toolbox version 3.3.3
Intel Windows NVMe driver 126.96.36.1997
Intel750.csv.zip 2.5 K
The report shows that the drive is healthy, but it also confirms that the Write amplication is high. The high WAF and the amount of host writes are causing the increase of wear leveling count.
As you have suggested this is not normal behavior. Keep in mind that the type of workload impacts WAF, for example: random writing of small files normally results in higher WAF.
There are some other aspects that I noticed in the log, that are worth looking into:
- Is the system using any technology that may be causing additional writes to the drive? such as power saving, fast boot, caching technologies, etc. If so, try disabling them.
- Take into consideration that to use the Intel® SSD 750 Series as a Bootable drive, your system must meet the requirements mentioned in the document: Before You Buy for Solid State Drives
- From the log, the SSD is working with PCIe* 2.0, and it requires PCIe* 3.0, also the CPU and storage chipset suggest that the motherboard does not have an Intel® Z97 Chipset, an Intel® X99 Chipset, or newer. If the PC does not have full support to boot from NVMe*, it may cause unexpected behavior.
For additional assistance, please let us know the brand and model of your computer/motherboard, as well as the BIOS version.
Also, install Intel® SSD Data Center Tool, and use the tool to create a dump file of the NVMElog. The instructions are in pages 29-33 of the ISDCT v2.3.x User Guide (ISDCT is CLI tool that must be run as Administrator).