4-7Removing and Replacing Enclosure ComponentsReplacing an I/O ModuleThis section provides basic information about your StorageEnclosure’s I/O modules, including removal and installationinstructions.Two I/O modules are located on the rear of the Storage Enclosure,and they are interface-specific. A blank I/O module may also beavailable for single I/O module configurations.(For detailed information about your I/O modules, see the chapterdedicated to your specific interface:■ For a SATA interface (Adaptec FS4100 or FS4500), see Chapter 5.■ For an FC interface (Adaptec FC4100), see Chapter 6.■ For an Ultra320 SCSI interface (Adaptec SC4100), see Chapter 7.To maintain proper airflow and cooling, either an I/O module oran I/O blank must be installed in both of the Storage Enclosure’sI/O slots.Caution: The I/O modules on the SC4100 are not hot-swappable. Do not attempt to hot-swap SCSI I/O modules.Caution: Although SATA and FC I/O modules are hot-swappable, Adaptec highly recommends that you power off theStorage Enclosure before removing or installing any I/Omodule. Hot-swapping an I/O module may result in dataloss or damage to the module and enclosure electronics.Removing an I/O ModuleTo remove an I/O module from the Storage Enclosure:1 Power off the host system and enclosure.Caution: Adaptec highly recommends that you power off theStorage Enclosure before removing or installing any SATAor FC I/O module.SCSI I/O modules are not hot-swappable.!!!
