The above statistics are updated every 30 minutes. One figure to keep an eye on is the reserved sector count – this should be around 100, and diminishes as the SSD replaces bad sectors with ones from this reservoir. Here I can use the t10.xxx names without the :1 at the end to see the two SSDs available, copying and pasting the entire line as the. This will return output something like the following: You can find out the right drive name by the following: Once you have SSH’d into the ESXi box, you can check the drive health with the following command:Įsxcli storage core device smart get -d The program measures operation time.A new feature with ESXi 5.1 is the ability to check SSD health from the command line. Test ends in the middle of the testing area. The first block in the first pair will be Block 0, the second block in the first pair will be Block N (where N is number of last block for testing). Butterfly Read mode is similar to Read mode difference only in blocks' order.The program tests blocks one by one from minimum to maximum. The program sends the block of data to the drive and the drive writes the block (All previous data in the block on the drive will be overwritten with the pattern and cannot be recovered after that!) The program measures operation time for each block. In Erase mode the program prepares block of data field with special pattern and an LBA number.The program reads block of data into a temporary buffer and measures time of operation for each block. In Read mode device reads block of data and transfers it thorough interface to the host controller.The program measures operation time for each block. In Verify mode device reads block of data into drive's internal buffer only and checks for consistency, there is no data transfer through an interface connector/cable.Verify test may work in unreliable way on USB/Flash devices.Verify test may have restrictions on Block Size with 256, 16384 or 65536 sectors because of Windows limitations. Author wasn't able to get stable test results with two or more simultaneous tests.
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