272 Chapter 22 Replacing the hard diskN0060612N0060612Nortel recommends that you replace a failed primary hard disk to retain full redundancy. Replacethe failed primary hard disk during a period of low call traffic.To install a primary hard disk into a RAID hard disk cage1 Position the primary hard disk into the top position of the RAID hard disk cage.2 Align the hard disk and hard disk cage retaining screw holes. Fasten the hard disk cage retainerscrews into both sides of the hard disk cage (see Figure 132).3 Connect the correct primary IDE ribbon cable connector to the primary hard disk.Caution: Use only Nortel-approved replacement components. Contact your accountrepresentative for the current list of approved replacement parts.Warning: Protect the hardware components against damage from electrostatic discharge.Always wear a grounded wriststrap before you handle components. Always place thecomponents in a static-free container.Note: For a RAID upgrade kit, the mirror disk and primary disk IDE ribbon cables arepreinstalled. If applicable, install the programmed hard disk from your single disk systeminto the RAID hard disk cage (use as the primary disk; see Figure 133).Note: For a BCM200 system, orient the hard disk so that the power and IDE connectorsare on the bottom and opposite to the hard disk cage lift tab (see Figure 131).For a BCM400 system, orient the hard disk so that the power and IDE connectors are onthe bottom and on the same side as the hard disk cage lift tab (see Figure 132).Note: The hard disk storage capacity (in MB) for both primary and mirror hard disks mustbe identical. Equipment provided by Nortel assures correct hard disk capacityrequirements.
