Parameter
Description
Value
protectionty
pe
Protection
enabling and
type.
l
0: indicates that the protection is not enabled.
l
1: indicates that the protection is enabled and the
protection type is 1 (not supported yet).
l
2: indicates that the protection is enabled and the
protection type is 2.
l
3: indicates that the protection is enabled and the
protection type is 3.
location
Protection data
location.
l
If this value is set to
1
and the protection is enabled,
protection data is transmitted as the first eight bytes
of the metadata.
l
If this value is set to
0
and the protection is enabled,
protection data is transmitted as the latter eight
bytes of the metadata.
metadatamo
de
Protection data
mode.
l
1
: Metadata is transferred as a part of the extended
data LBA.
l
0
: Metadata is transferred as a part of separate
cache.
NOTE
If
Metadata Size
is set to
0
, this parameter is unavailable.
Usage Guidelines
l
Before running this command, stop all I/O services of the SSD and perform the
following:
–
For Linux, unmount all logical drives. Stop all the processes on the logical drives
that use the SSD, and run the
fuser
command to check that these processes are all
stopped. The following information (in this example, the SSD has two logical
drives) indicates that a process is using an SSD logical drive. Stop the process.
[root@localhost tool]#
fuser /dev/nvme0n1 /dev/nvme0n2
/dev/nvme0n1: 14789
/dev/nvme0n1: 14812
–
For ESXi, delete all partitions of all logical drives.
–
For Windows, make all logical drives offline, as shown in
ES3000 V5 NVMe PCIe SSD
User Guide
6 Command Description
Issue 07 (2019-03-19)
Copyright © Huawei Technologies Co., Ltd.
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