Additional details are given in Appendix C, "Technical Reference."ChassisThe server system’s electro-galvanized metal chassis minimizes EMI/RFI. Thechassis contains:auto-ranging 525 watt power supply/fan unit that automatically switchesbetween 110 Vac and 220 Vactwo variable-speed hot-swap fans for interior cooling, with speeddetermined by interior air temperature and number of installed harddrivesstandard 3 1/2-inch diskette drive bay for the installed 1.44-MB diskettedrivefour standard 5 1/4-inch bays for mounting half-height peripheraldevices (CD-ROM, diskette drive, tape drive)all configurations except base ship with a CD-ROM drive installed in thebottom slotsix hot-docking bays for mounting SCSI-2 SCA 3 1/2-inch full heighthard disk drivesall configurations except base ship with one or two 2-GB hard disksinstalled in the hot-docking bayten I/O expansion slots (slot closest to bottom of chassis has nocorresponding connector on the system board).Two captive thumbscrews secure the removable metal door behind the lower plasticfront door to the chassis. The cover provides proper air-flow and easy access to thehot-docking bays for hot-swapping SCSI-2 SCA hard disk drives in and out of theserver. The removable side cover, attached to the chassis with four screws, providesproper airflow and easy access to the system board. You can secure the cover to thechassis and the hot-docking bay metal door to the chassis with padlocks (notprovided). Figure 1-2 shows the major system components.SCSI-2 Single ConnectorAttachment (SCA)Compatible BackplaneProvides a continuous fast/wide SCSI bus for access to allhot-swap drive bays. Allows SCSI-1(5 MB/sec), fast/narrow SCSI-2 (10 MB/sec), or fast/wideSCSI-2 (20 MB/sec) data transfers to the hard drives.