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ES3000 V5 NVMe PCIe SSD
User Guide
Test results are returned to the host through the host's physical memory that PRP1 and PRP2
point to. The data structure is defined in the following table.
Table A-36 DIEID structure
Bytes
3:0
7:4
11:8
......
27:24
31:28
A.6.1.1.9 Querying the Average DWPD
This interface is used to query the average DWPD in N (N <= 360) days. Dword13 indicates
the number of days, and the result is returned by Dword0 of CQ.
This command uses the PRP1, PRP2, Dword10, Dword12, and Dword13 fields. Enter
reserved value 0 for other fields that are not involved.
Table A-37 Sub_OpCode
Sub_OpCode
0x0E0000h
Table A-38 Command Dword13
Bit
31:00
Table A-39 Cq Command Dword0
Bit
31:00
Issue 07 (2019-03-19)
Description
Chip ID
Version
DIEID [31:0], indicates the first 4 bytes of DIEID.
-
DIEID [160:129], indicates the last 4 bytes of DIEID.
Reserved
Description
Number of days: valid value (1-360)
Description
DWPD value: 100 indicates 1. (If the average daily written data
volume is 0.8 TB and the drive user volume is 1.6 TB, the DWPD
value is 0.5 and the interface result is 50.)
Copyright © Huawei Technologies Co., Ltd.
A Supported NVMe Commands
Description
Query the average DWPD value.
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