Storage Devices

Sun Cluster 3.0 supports campus clustering configurations using the Sun StorEdge A5x00 disk array or the Sun StorEdge T3/T3+ disk tray. The Sun StorEdge T3/T3+ can be configured either singly ("single-controller," as shown in Figure A-5) or in pairs ("partner-group," as shown in Figure A-1).

Long-wave gigabit interface converters (LWGBICs) should be used for the StorEdge A5x00 and Sun StorEdge T3/T3+ for distances greater than 500 meters and up to 10Km. (Use shortwave GBICs for distances less than 500 meters.) Consult Sun Professional Services for implementations with long-wave GBICs.

A campus cluster configuration must include two (or more) SANs for storage devices, in which the storage forming one submirror is in one room and mirrored to its submirror in another, physically separate room. Additionally, the submirrors of a mirror must be on different host bus adapters. For more on configuring SANs, refer to the Sun StorEdge Network FC Switch-8 and Switch-16 Installation and Configuration Guide, Sun SAN 3.0.

A quorum disk can be either a separate device or one of the dedicated storage devices (either Sun StorEdge T3/T3+ or A5x00).

Because of potential limitations involving switch connectivity, it is not currently possible to use Sun StorEdge T3s in the third, quorum room.