Hello The H700 supports hot-swapping when connected to a backplane. If the drives are in carriers that can be removed from the front of the server then you can hot-swap. If the drives are cabled or only accessible when you remove the top cover then you will need to power down to swap. Thanks
I have an R310 out of warranty with a failed drive on a RAID 1.  I believe it has a Perc H700.  Can I hot-swap the failed drive or do I need to shut down the server, replace the failed drive and then power the server up?
Dell R310 with RAID1 and 1 drive failed