I'm working on a project and want to make sure I understand the requirements for expanding a RAID 5 LV, and am hoping for feedback.
When expanding a RAID 5 LV, and wanting to maintain RAID 5 functionality, must one always increase the storage by a number of physical volumes equal to (no more and no less, but evenly divisible by) the number of physical volumes used to originally create the RAID 5 LV? e.g. I create a RAID 5 LV that consists of four PVs and later want to increase the size of the RAID 5 LV. To do so I must add an additional four PVs, but may add any number evenly divisible by four in order to maintain RAID 5 functionality. Do I understand this correctly?
Thank you to those that provide feedback on this.
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