Configuration Scenarios - Compaq StorageWorks 4000 - RAID Array White Paper

Compaq RAID Array 4000 Storage System: Deployment and Configuration

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
System using Compaq Smart Array Controllers.
0206-0699
for details about migrating to an RA4000 from a Compaq ProLiant Storage
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