5. Installing and Replacing Optional DevicesExpress5800/R320e-E4, R320e-M4, R320f-E4, R320f-M4 Maintenance Guide (VMware) 113Chapter 2 Configuring and Upgrading the System5.3 Installation, Removal and Replacement of 2.5-inch Hard DiskDriveThe 2.5-inch hard disk drive bays in front of the server can mount up to 8 hard disk drives with the 2.5 inch widthexclusive trays for one CPU/IO module.Important Do not use any hard disks that are not authorized by NEC. Installing a third-partyhard disk may cause a failure of the server as well as the hard disk. Purchase hard disks of the same model in pair. Contact your sales agent for harddisk drives optimum for your server.The operation is executed on the created mirror volume with installed hard disk drive pairs such as slot 0 onCPU/IO module 0/1, slot 1 on CPU/IO module 0/1, slot 2 on CPU/IO module 0/1. (The OS is installed on themirror volumes that consist of the hard disks in the slot 0.)Slots to execute the mirroring processEmpty slots in the 2.5-inch hard disk drive bay contain dummy trays. The dummy trays are inserted to improvethe cooling effect in the server. Always insert the dummy trays in the slots with no hard disks drive installed.Slot 0 Slot 2 Slot 4 Slot 6 Dummy traySlot 1 Slot 3 Slot 5 Slot 7CPU/IO module 0CPU/IO module 1
