Upgrade Dell PowerFlex to v3.6.x

Check NVDIMM capacity compatibility for future upgrades

Check your system for the recommended NVDIMM capacity, to prepare it in advance for future upgrades of Fine Granularity Storage Pools. You will not be able to upgrade your system to versions higher than v3.0.1 unless sufficient NVDIMMs are installed in the system.

1. Save the FlexOS_PreUpgrade_Readiness_Checker.py tool on the MDM, or on a node with connectivity with the MDM.
2. In command line, run the command:

   FlexOS_PreUpgrade_Readiness_Checker.py [-h] --username <USERNAME> [--password <PASSWORD>] [--cli_executable <CLI_BIN>] [--use_nonsecure_communication] [--mdm_ip  <MDM_IP_ADDRESSES>]
   
   

   where:

   <USERNAME> is the user name used to query the MDM

   <PASSWORD> is the user's password

   <CLI_BIN> is the location of the PowerFlex CLI on the server

   <MDM_IP_ADDRESSES> is a comma-separated list of MDM IP addresses

   The tool will output one of the following messages:

   • Your system has insufficient NVDIMM capacity on SDS {XXX} to support future version upgrades. The required total NVDIMM capacity for the upgrade is {YYY}. Contact your account manager for more information.

     (This message may appear several times, depending on the number of SDSs with insufficient NVDIMM capacity.)

   • System is ready for upgrade

   If the output is System is ready for upgrade, no further actions are required now. Your system contains enough NVDIMM capacity to support Fine Granularity storage acceleration in future software versions.

   If the output is Your system has insufficient NVDIMM capacity on SDS {XXX} to support future version upgrades. The required total NVDIMM capacity for the upgrade is {YYY}. Contact your account manager for more information., continue to the next step.

3. Use one of the following methods to determine which SDSs need more NVDIMM capacity.

   Option	Procedure
   CLI	Prepare a list of the SDSs in your system. You can use the --query_all_sds to collect this information. For example: scli --query_all_sds Using the CLI, run the following command for every SDS that uses NVDIMM acceleration for Fine Granularity storage: scli --query_sds (--sds_id <ID> | --sds_name <NAME> | --sds_ip <IP>) For example: scli --query_sds --sds_name sds1948 Look for output similar to the following: Acceleration device information (total 2 devices) 1: Name: N/A Path: /dev/dax0.0 Original-path: /dev/dax0.0 ID dfef27800010000 Acceleration Pool: accp1, Capacity: 15.7 GB (16052 MB), Used: 21.7 GB (22170 MB), State: Normal If the Used value is greater than the Capacity value, as shown in the output example above, more NVDIMM capacity is required in order to upgrade the system. Make a note of all the SDSs where more NVDIMM capacity is required.
   GUI	From the PowerFlex GUI, open the Alerts pane, and look for alerts for insufficient NVDIMM capacity for future version upgrades. Prepare a list of all the SDSs where these alerts occur.

4. Contact your account manager for sales and technical assistance.