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
Description
3:0
Chip ID
7:4
Version
11:8
DIEID [31:0], indicates the first 4 bytes of DIEID.
……
-
27:24
DIEID [160:129], indicates the last 4 bytes of DIEID.
31:28
Reserved
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
Description
0x0E0000h
Query the average DWPD value.
Table A-38
Command Dword13
Bit
Description
31:00
Number of days
: valid value (1-360)
Table A-39
Cq Command Dword0
Bit
Description
31:00
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.)
ES3000 V5 NVMe PCIe SSD
User Guide
A Supported NVMe Commands
Issue 07 (2019-03-19)
Copyright © Huawei Technologies Co., Ltd.
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