what's the use of compact flash card for redundant controllers?

while backup of cold retain values to compact flash is not supported for redundant pm864A controllers is there any benefit to buy and install flashes in these type of controllers?

persiannova Rank: 823

Asked 3 months ago

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Answers

The AC 800M controller can:

Have firmware upgraded from flash
(if you have many controllers you can quickly upgrade them all in parallel from flash cards instead of one by one from Control Builder M)
Load application from flash
(e.g. after total power loss)
Store crash dumps to flash
(to assist during troubleshooting)