.Part 3 Host and Storage System Rules HP SAN Design Reference Guide 785353-001

Table 110 P6000/EVA storage system rules (continued)

Description

Rule

number

All P6000/EVA host ports must contain a cable or a loopback connector; otherwise, host port error events

will persist. If the P6000/EVA host port is empty, perform the following steps:

• From the OCP or WOCP, set the port to direct connect mode.

• Insert a loopback connector when a P6000/EVA host port is not connected to a switch or an HBA

(for direct connect).

Supports connection of single HBA servers. Contact an HP storage representative for the white paper

Connecting Single HBA Servers to the Enterprise Virtual Array without Multipathing Software.

Servers without native or layered multipathing software are not supported for HP P6000 Continuous

Access.

Overlapping zones are supported with disk and tape.12

Overlapping storage port zones are supported if multiple operating systems share an array port.13

Use storage system LUN presentation to enable/disable LUN access to specific hosts.14

All host table entries must have the operating system type parameter set (based on the operating system

accessing the assigned LUNs).

Servers that share access to the same storage LUN require special application software (such as cluster

software) to preserve data.

For information about configuring the Storage Management Appliance with storage systems in the

same SAN fabric, see “Storage management server integration” (page 230).

Configuration parameters

This section describes general P6000/EVA configuration parameters. Specific solutions, such as

high-availability clusters, or applications, such as HP P6000 Continuous Access (see “HP P6000

Continuous Access SAN integration” (page 228)), can define additional configuration parameters

or requirements. Solution requirements must be observed as specified by the solution configuration

documentation.

Table 111 (page 225) lists the maximum number of connections supported by P6000/EVA storage,

and the storage limits for each platform. The maximums are for access to a single P6000/EVA

storage system with redundant dual controllers. If the connection requirements for the number of

servers in a particular SAN exceed the maximum, deploy multiple storage systems in the SAN.

General maximums are as follows:

• 1,024 HBAs

• Up to 256 LUN presentations per a single virtual disk

• Up to 8,192 LUN presentations for all LUNs

For more information about P6000/EVA maximums, see the HP P6000 Enterprise Virtual Array

Compatibility Reference.

A LUN presentation is the number of hosts presented to, regardless of how many adapters are in

each host. For example, if a LUN is presented to eight hosts, that LUN has eight LUN presentations.

If a LUN is presented to two hosts, that LUN has two LUN presentations.

= 0256 LUN presentationsLUNs #001 through #032 are presented to 8-node cluster

= 0256 LUN presentationsLUNs #033 through #064 are presented to 8-node cluster

= 0256 LUN presentationsLUNs #065 through #096 are presented to 8-node cluster

= 0256 LUN presentationsLUNs #097 through #128 are presented to 8-node cluster

= 0256 LUN presentationsLUNs #129 through #160 are presented to 8-node cluster

224 P6000/EVA storage system rules