Checking The Amount Of Remaining Life In Nvme Devices - IBM FC EJ08 Manual

Checking the amount of remaining life in NVMe devices

Learn how to use operating system commands to find the amount of remaining life in an NVMe device.
Using the operating system commands
The AIX, IBM i, and Linux operating systems have commands that you can use to determine the amount
of life that is remaining in an NVMe device.
Running the AIX command to check the amount of remaining life in NVMe devices
Find information about using the AIX operating system to find the amount of remaining life in an NVMe
device.
About this task
To find the amount of remaining life in an NVMe device by using the AIX operating system, complete the
steps in this procedure.
Procedure
1. If the system has logical partitions, complete this procedure from the logical partition that owns the
NVMe device
2. To use the AIX operating system to find the remaining life on an NVMe device, complete the following
steps:
a) From the AIX command line, type diag and press Enter.
b) From the Function Selection menu, select Task Selection > NVMe general health information.
c) Select the NVMe device that you want to check remaining life for and press Enter.
d) View the Percentage of NVM subsystem life used field.
Is the value in the Percentage of NVM subsystem life used field 100%?
• Yes: Continue with the next step.
• No: Continue with step "4" on page 37.
3. The NVMe device is nearing its end of life and must be replaced. The NVMe device will soon reach the
limit for the number of write operations that are supported. Write operations to the NVMe device
become slower over time, and at some point the NVMe device becomes a read-only device. When the
operating system writes data to a read-only device, the write operations are rejected, and the
operating system considers the device as if a failure occurred. To support normal write operations, the
NVMe device must be replaced.
Note: Failure of IBM NVMe devices is covered in the standard warranty and during the maintenance
period only for devices that have not reached the maximum number of write cycles. Devices that reach
this limit might fail to operate according to specifications and must be replaced. This replacement cost
is not covered under the standard warranty or during the maintenance period.
This ends the procedure.
4. Does the Critical Warning field show Available spare space has fallen below threshold?
• Yes: Continue with the next step.
• No: A service action is not required. This ends the procedure.
5. The NVMe device is nearing its end of life and must be replaced. The NVMe device will soon reach the
limit for the number of write operations that are supported. Write operations to the NVMe device
become slower over time, and at some point the NVMe device becomes a read-only device. When the
operating system writes data to a read-only device, the write operations are rejected, and the
operating system considers the device as if a failure occurred. To support normal write operations,
schedule maintenance to replace the NVMe device at your earliest convenience.
Note: Failure of IBM NVMe devices is covered in the standard warranty and during the maintenance
period only for devices that have not reached the maximum number of write cycles. Devices that reach
Installing PCIe adapters in the 9080-M9S system 37