HP StorageWorks 4000 Compaq RAID Array 4000 Storage System: Deployment and Con - Page 7

Compaq RAID Array 4000 Storage System: Deployment and Configuration 7 Configuration Scenarios System configurations vary widely, but RA4000s with dual controllers can be easily deployed in any scenario with very little operating interruption. Customers can increase storage capacity and achieve redundancy in an endless number of configuration scenarios. Four common configurations are detailed below. • Single Server/Single Controller. The system contains one server and one controller per RA4000. There is no redundancy in this configuration. • Dual Servers/Single Controller. The system contains two servers and one controller per RA4000 running Microsoft Cluster Server or NetWare High Availability Server. There is no storage system redundancy in this configuration. • Single Server/Dual Controllers. The system contains one server and two controllers per RA4000 to provide redundancy. Dual controllers bring controller failover redundancy for the system to this scenario. • Dual Servers/Dual Controllers. The system contains two servers running Microsoft Cluster Server or NetWare High Availability Server and two controllers per RA4000 to provide redundancy. Dual controllers and servers bring controller failover redundancy for the system to this scenario. Note: Single Server/Single Controller, Dual Servers/Single Controller, Single Server/Dual Controllers, and Dual Servers/Dual Controllers, are not the only RA4000 configuration scenarios. System configurations may vary depending on the customer's operating environment. Incompatibilities in bus and drive mapping exist between Compaq ProLiant Storage Systems and the RA4000 except for the F2 or U2 models. For this reason, data stored on hard drives in a ProLiant Storage System F2 or U2 connected to a Smart Array Controller can be migrated directly to an RA4000 provided the HDDs are kept in the same physical order and RA4000 Controller FW 1.14 or later is used. For ProLiant Storage Systems models F1, U1, and UE, migrating stored data to an RA4000 requires a full backup and restore operation. Refer to www.compaq.com for details about migrating to an RA4000 from a Compaq ProLiant Storage System using Compaq Smart Array Controllers. 0206-0699