a. Remove the fixing screws from the rear of the expansion enclosure.b. Remove the HDBs from the rear of the rack.2. Remove the expansion enclosure from the rack rails.WARNING: Do not attempt to the lift the expansion enclosure by yourself. Always getassistance when lifting the expansion enclosure. If installed above the lower 20U of a rack, acustomer-provided mechanical lift must be used to avoid injury.3. Remove the rack rails from the rack.4. Install the replacement rack rails in the rack.5. Install the expansion enclosure in the rack rails.6. Install the HDBs.7. Start up the storage system and expansion enclosure.Post-Replacement ProceduresAfter replacing a component in the SC180 expansion enclosure, start up the SCv2080 storage controllersand the SC180 expansion enclosures if they were previously shut down, then use SupportAssist to senddiagnostic data to Dell Technical Support Services.Start Up the Storage System and Expansion EnclosureIf the storage system and expansion enclosure were previously shut down, perform this procedure tostart them up.1. Plug the power cables into the PSUs of the storage system and expansion enclosure.2. Turn on the expansion enclosure by pressing the power switches on the PSUs.NOTE: Always turn on the expansion enclosure before turning on the storage system.3. Turn on the storage system by pressing the power switches on the PSUs.4. Use the Dell Storage Client to make sure the replacement part is recognized and shown as up andrunning.Sending Diagnostic Data Using Dell SupportAssistUse Dell SupportAssist to send diagnostic data to Dell Technical Support Services.1. Click Send SupportAssist Data Now. The Send Support Assist Data Now dialog box appears.2. Select Storage Center Configuration and Detailed Logs.3. Click OK.Contact Dell Technical Support ServicesContact Dell Technical Support Services to let them know that you completed a repair, and request thatthey re‐enable alerts for the enclosure.• Ask Dell Technical Support Services for a post‐installation system check.Replacing SC180 Components 31