HP ProLiant 2500 Compaq ProLiant 2500 Server Technology - Page 13

201A/1196 TECHNOLOGY BRIEF (cont.) ... The non-hot-plug model (ProLiant 2500 6/200N) comes standard with four 1.6-inch drives. It is upgradable to support hot-plug drives by replacing the standard drive cage with one of three available internal hot-plug drive cage options: • ProLiant 2500 Hot-Plug (5 x 1-inch) Option Kit. A hot-plug drive cage optimized for five 1-inch hot-plug hard drives. This cage is identical to the cage used in the standard ProLiant 2500 hot-plug model (see Figure 10). It is the appropriate choice for customers standardizing on 1-inch drives to achieve higher spindle density. This cage will also support 1.6-inch hot-plug drives; it can be configured with up to two 1.6-inch hot-plug drives plus one 1-inch hot-plug drive. • ProLiant 2500 Hot-Plug (3 x 1.6-inch) Option Kit. A hot-plug drive cage optimized for three 1.6-inch hot-plug hard drives. This is the appropriate choice for customers standardizing on 1.6-inch drives to achieve maximum drive capacity. • ProLiant 2500 Duplex Option Kit. A hot-plug drive cage designed for customers who want to operate in duplex mode. The duplex option supports drive mirroring for increased availability. It requires that a second SCSI bus be installed to provide redundancy of controller and drives. The cage in this kit contains a duplexed SCSI backplane and is optimized for four 1-inch or two 1.6-inch hot-plug hard drives. Power Switch 3.5" Diskette Drive EIDE CD-ROM Drive Two available half height bays 1" Hot-Plug Hard Drives Figure 10. Front view of the Compaq ProLiant 2500 Server chassis showing four removable media bays and a hard drive cage containing five 1-inch hot-plug drives. The ProLiant 2500 also supports the Compaq ProLiant Storage System for customers needing even greater storage capacity. In fact, the combination of a non-hot-plug ProLiant 2500 server and a ProLiant Storage System can provide up to 63 gigabytes of storage for a low total system cost. Operating the ProLiant 2500 Server in hot-plug duplex mode requires the installation of a HotPlug Duplex Option Kit. Customers who know at the outset that they will be using hot-plug drives in duplex mode are advised to purchase the ProLiant 2500 non-hot-plug model (ProLiant 2500 6/200N) and the Hot-Plug Duplex Option Kit. Compaq makes this recommendation because the cost difference between the standard hot-plug model and the non-hot-plug model equals the cost of the Hot-Plug Duplex Option Kit. 13