Expanding the Dell PowerFlex Cluster with New Disks

Expanding the PowerFlex Cluster with New Disks shows how to add new disks to current SDS devices.
Our PowerFlex cluster is running on a nested environment. So, all steps demonstrated here are not in a production environment. The PowerFlex cluster is 4.5.2, and all nodes are CentOS-based!

Currently, which disks are used on each SDS?

1- Access the MDM primary node by SSH and execute the following command:

scli --query_sds_device_info --sds_name SDS01 --all_devices | grep -i -E "Original Path:"

As we can see in the following picture, we have disks from /dev/sdb to /dev/sdm:

The following command can be executed to list all attached disks:

lsblk --path

As we can see in the following picture, the disks /dev/sdn and /dev/sdo are attached to the system; however, they are not in use in the PowerFlex cluster:

So, in this case, the disks /dev/sdn and /dev/sdo are available to add to the PowerFlex cluster!

2- Adding both disk devices:

scli --add_sds_device --sds_name SDS01 --protection_domain_name PD01 \
     --storage_pool_name SP01 --device_path /dev/sdn --device_name SDS01-sdn

scli --add_sds_device --sds_name SDS01 --protection_domain_name PD01 \
     --storage_pool_name SP01 --device_path /dev/sdo --device_name SDS01-sdo

Note: Replace the sds name, protection domain, storage pool, device path, and device name to reflect your details!