Hello   Yes, your RAID and OS should be intact after the upgrade. The firmware upgrade will not take effect until after you restart the system. The system should be restarted after applying the update. It is best practice to always have a valid tested backup before performing any hardware/software changes on a production system. Thanks
Hi everyone.I have 3 PowerEdge R310 operating with 3 HDD / RAID5  on PERC S300.If i try  updating PERC firmware (SAS-RAID_Firmware_RPCKX_WN32_2.0.0-016600193000_A06) whilst the server is online, the RAID and SO restarted intact?I apreciate your answers.Thanks.
Power Edge R310 Update firmware PERC S300