If you have SSDs on your LPAR. You can use this command to check if their lifetime is not about to expire :
CALL PGM(QSMGSSTD) PARM('SSDGAUGE' X'00000008' 'SSTD0100' X'00000000')in spool you will find result in QPCSMPRT :
RID
****** MACRO CALLED:SSDGAUGE
RUNNING MACRO: RASSYSTEMINFO
INVOCATION ............................ RASSYSTEMINFO
SYSTEM TYPE/MODEL/SERIAL NUMBER ....... 9009-42A-7855XXX
CURRENT SYSTEM TIME (LIVE) ............ 12/27/2023 22:52:59.6639240000
LOGICAL PARTITION NUMBER .............. 4
IS PARTITION PHYP OR I5/OS? ........... I5/OS
IS SYSTEM PHYP OR HYPERVISOR? ......... PHYP
IS THIS A MAIN STORE DUMP SESSION? .... NO
SLIC RELEASE .......................... 740
SLIC DRIVER ........................... 0
PIRANHA TYPE .......................... PIRANHA -NATIVE
MACRO EXECUTION MODE .................. NATIVE
DRIVER TYPE ........................... GA
DRIVER LEVEL .......................... 06N0406
RUNNING MACRO: DDTOOLS SSDFUELGAUGE
SYSTEM TYPE 9009 / MODEL 42A / FEATURE CODE EP1E / SERIAL NUMBER 78-55XXX / RELEASE V7R4M0
1. RESOURCE NAME: DMP001
LOCATION CODE: U78D2.001.WZS0AKT-P2-D1
PART NUMBER: 01LU830
SERIAL NUMBER: 4KV0ER8X
FIRMWARE LEVEL: B52G
NUMBER OF BYTES WRITTEN TO SSD: 185343 GB
NUMBER OF WRITTEN BYTES SUPPORTED: 3588096 GB
LIFE REMAINING GAUGE: 95%
PFA TRIP (PREDICTIVE FAILURE ANALYSIS WARNING HAS BEEN LOGGED): NO
POWER ON DAYS: 1616
2. RESOURCE NAME: DMP005
LOCATION CODE: U78D2.001.WZS0AKT-P2-D2
PART NUMBER: 01LU830
SERIAL NUMBER: 4KV0ARMX
FIRMWARE LEVEL: B52G
NUMBER OF BYTES WRITTEN TO SSD: 199836 GB
NUMBER OF WRITTEN BYTES SUPPORTED: 3588096 GB
LIFE REMAINING GAUGE: 95%
PFA TRIP (PREDICTIVE FAILURE ANALYSIS WARNING HAS BEEN LOGGED): NO
POWER ON DAYS: 1616
3. RESOURCE NAME: DMP003
LOCATION CODE: U78D2.001.WZS0AKT-P2-D3
PART NUMBER: 01LU830
SERIAL NUMBER: 4KV0H2WX
FIRMWARE LEVEL: B52G
NUMBER OF BYTES WRITTEN TO SSD: 194191 GB
NUMBER OF WRITTEN BYTES SUPPORTED: 3588096 GB
LIFE REMAINING GAUGE: 95%
PFA TRIP (PREDICTIVE FAILURE ANALYSIS WARNING HAS BEEN LOGGED): NO
POWER ON DAYS: 1616
4. RESOURCE NAME: DMP007
LOCATION CODE: U78D2.001.WZS0AKT-P2-D4
PART NUMBER: 01LU830
SERIAL NUMBER: 4KV0EL4X
FIRMWARE LEVEL: B52G
NUMBER OF BYTES WRITTEN TO SSD: 183329 GB
NUMBER OF WRITTEN BYTES SUPPORTED: 3588096 GB
RID
LIFE REMAINING GAUGE: 95%
PFA TRIP (PREDICTIVE FAILURE ANALYSIS WARNING HAS BEEN LOGGED): NO
POWER ON DAYS: 1616
****** END OF DUMP ****** If you have LIFE REMAINING GAUGE: 0% on any of disk then :
The SSD has reached the limit for the number of write operations that are supported. The SSD is now a read-only drive and should be replaced. When the operating system writes to the SSD, the write operations are rejected, and the operating system treats the drive as if a failure occurred. Replace the drive.
You can run similar command for NVMe device :
CALL PGM(QSMGSSTD) PARM('NVMEGAUGE' X'00000009' 'SSTD0100' X'00000000')