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-93
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.6.2.1.9 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, and Dword12 fields. Enter reserved value 0
for fields that are not involved.
Table A-94
Command Dword13
Bit
Description
31:00
Number of days
: valid value (1-360)
Table A-95
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).
A.6.2.1.10 Querying UniqueID Information
This interface is used to obtain the UniqueID information. The host issues a command for
obtaining the data length, and then issues a command for obtaining the content based on the
length. The content obtained is in the string format and the length does not contain '\0' at the
end.
This command uses the PRP1, PRP2, Dword10, and Dword12 fields. Enter reserved value 0
for fields that are not involved.
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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