IBM 867431X Hardware Maintenance Manual - Page 90

In the following example, modems are connected to the ASM PCI adapters that are included with the servers that are connected at each end of the ASM interconnect network bus. Placing modems at opposite ends of the ASM interconnect network bus ensures that if an ASM interconnect connection in the bus fails, all of the systems on the ASM interconnect network have access to a modem to forward system-management data to the remote system-management administrator. This is an environment with different models of servers. Modem Remote system management administrator's system Modem Modem ASM Interconnect module Remote Supervisor Adapter xSeries 220 xSeries 350 xSeries 350 xSeries 350 Hard disk drives The server/workstation supports two 1-inch (26 mm) slim 3.5-inch low voltage differential (LVD) hard disk drives. Notes: 1. You can hot-swap a hard disk drive only if a ServeRAID adapter configured as RAID1 is installed in the system. If you use any other ServeRAID or SCSI configuration, you cannot hot-swap the hard disk drive. Each hard disk drive tray has a status and an activity light located on the upper-right corner of tray (see "Server controls and indicators" on page 6 for the 82 Hardware Maintenance Manual: xSeries 330 Type 8674, IntelliStation R Pro Type 6851, and Network Equipment Building System Type 8674