Hello,
The Array can be expanded without disturbing the existing configuration. There are many pre requisites that need to be addressed before commencing the Array Expansion.
From the query, we understand that the Smart Array Controller has a Cache Module & ADG license.
The SmartCache feature need to be disabled to perform an Array expansion
You can increase the storage space on an array by adding physical drives. Any drive that you want to add must meet the following criteria:
• It must be an unassigned drive.
• It must be of the same type as existing drives in the array (for example, SATA or SAS).
• It must have a capacity no less than that of the smallest drive in the array.
IMPORTANT: An array expansion, logical drive extension, or logical drive migration takes about 15 minutes per gigabyte. While this process is occurring, no other expansion, extension, or migration can occur simultaneously on the same controller. Controllers that do not support a battery-backed write cache do not support this process.
Please refer to the below link for more information:
https://support.hpe.com/hpsc/doc/public/display?docId=c03909334
Thank you
I Work for HPE