9-26 Upgrading Your ServerHDD CageInstalling an optional HDD cage in the 3.5-inch hard disk drive bay on the front of the server allowsthe server to be equipped with up to four hard disk drives in addition to four drives normallyinstallable. Hard disk drives are not installed in the HDD cage (except for BTO (built to order)).Purchase them additionally.IMPORTANT:Do not use any hard disks not approved by NEC. If an unapproved thirdparty's hard disk is installed in the server, not only the hard diskdrive but also the server itself may be defected. Purchase hard diskdrives of the following models:– N8150-199F (36.3GB, 15,000 rpm, SAS)– N8150-200F (73.2GB, 15,000 rpm, SAS)– N8150-201F (146.5GB, 15,000 rpm, SAS)For the disk array configuration, refer to the manual that comes with thedisk array controller.A hard disk drive having thickness of about 1 inch can be inserted to each of the four slots in theHDD cage. SCSI ID4 - SCSI ID7 are assigned in the order from bottom to top.If the optional HDD cage is installed in the 3.5-inch hard disk drive bay, the cable attached to the3.5-inch hard disk drive cage should be connected to the SAS connector on the motherboard.For disk array configuration, connect the cable on the 3.5-inch hard disk drive bay to the disk arraycontroller. Additional hard disk drives to be used should have the same SCSI standard as the normalhard disk drives (or SAS).Dummy trays (made of styrofoam) are inserted to empty slots in the 3.5-inch hard disk drive bay(except the bottom slot). This is intended to improve the cooling effect in the server. Always insert adummy tray to any slot without a hard disk drive.IMPORTANT: A specified dummy tray must be used.