SAN Configurations for RA8000/ESA12000 on Windows NT - Intel
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14
AA–RHH6B–TE
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16-port FC Switches, total number of switch ports available for Servers and Storage is 32
Maximum Server Connectivity,
Up to 14 Servers and 1 Storage System (4 Active storage ports)
[(32 – 4 storage ports)/2 = 14 servers]
Maximum of 8 FC HBA's configured on any one active controller host port
Or Maximum Storage Capacity,
Up to 6 Storage Systems (24 Active storage ports) and 4 HA Servers
[32 – 8 server ports = 24 storage ports]
Maximum of 4 active controller host ports per FC HBA
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8-port FC Switches, total number of switch ports available for Servers and Storage is 16
Maximum Server Connectivity,
Up to 6 Servers and 1 Storage System (4 Active storage ports)
[(16 – 4 storage ports)/2 = 6 servers]
Or Maximum Storage Capacity,
Up to 3 Storage Systems (12 Active storage ports) and 2 HA Servers
[16 – 4 server ports = 12 storage ports]
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For dual path high availability, HSG80 controller pairs are configured in Multiple-Bus Failover
Mode. For non-HA single path servers, controllers are configured in Transparent Failover Mode
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EBS Integration Supported
SAN Configuration 2 Fabric Rules
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Total Switches = 2, 16-port or 8-port
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Maximum Switch Hops (nominal ) = 0
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Maximum Switch Hops (worst case ) = 0
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Maximum Distances:
Up to 500 meters per FC cable segment, 1 km total server to storage using 50 micron multi-
mode fibre optic cable. Refer to general Fabric rules for other cable types
SAN Configuration 2 Notes
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Uses Compaq Secure Path for Windows NT (minimum version 2.2)
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When configured with greater than 4 FC HBA's per active controller host port, classified as an
“NT Extended Configuration” (refer to the StorageWorks Windows NT Platform Kit FC
Software Setup Utility)
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One instance of the Secure Path Manager is required for each standalone server or each pair of
clustered servers. One instance can control 2 paths on up to 4 storage systems. All instances can
be run from a single Client if desired
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Each server is configured for access to two paths and two controller ports, using either Port 1 of
both controllers or Port 2 of both controllers
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For servers accessing controller host port 1 use LUN number and offset values in the range of 0 –
99, for controller host port 2 use number and offset values in the range 100 -199
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Performance considerations, assuming relatively equal server load:
If using a single storage system, for balanced performance across all servers configure half of
the servers on each of the controller port pairs. If using multiple storage systems configure an
equal number of servers on each storage system.
The recommended maximum number of controller host ports configured per FC HBA is 2 for
high bandwidth applications and 4 for high throughput applications.
