Dell DAE Installation Manual download pdf (Page 26)

For HBA device driver settings, driver levels, or components in the data path, tape or disk

configurations should include any patches, firmware updates, or configuration settings for each

component in or on the data path.

Emulex HBAs

Use the EMC setting in the HBA configuration utility. Supported Emulex HBAs and driver revs can

be found in the EMC Support Matrix on EMC Powerlink.

Settings for Emulex

Use the settings defined in the Emulex driver installation manual for the specific HBA.

Variations for tape

When using tape, there are two more settings needed:

Use PLOGI instead of PDISC after LIP – Always set this when connecting tape devices to the

HBA.

Disable target reset for tape devices – This should be set when using tape devices and VERITAS

cluster software. If cluster software is not used, this parameter should not be set.

QLogic HBAs: QLogic settings

Some HBAs may not come with the EMC settings. If the settings on the HBA match the EMC

settings, then the HBA was preconfigured to the correct settings for connection to a Dell/EMC CX

Series.

Data path

The data path should be redundant to reduce the chance for failures. Multipath software runs on

the attached host. A minimum of two paths—one to each SP—must be created to provide

redundancy. For a complete list with software revisions refer to the EMC Customer Matrix.

EMC recommends using PowerPath

for multipath host software for the supported hosts. To take

advantage of PowerPath load balancing and redundancy, create four paths to the Dell/EMC CX

Series. This can be accomplished with two HBAs and two ports per SP.

EMC recommends dual-attached hosts.

Host bus adapters

EMC also recommends persistent binding from the host to the Dell/EMC CX Series.

Recommended HBAs

The most prevalent HBAs in use with and supported by EMC are QLogic and Emulex. Other

native adapters include the Sun adapters (which are QLogic HBAs), and IBM adapters, (which

are Emulex HBAs).

Refer to the EMC Support Matrix for specific HBA and driver support for the hosts in your

environment.

Dell/EMC CX Series SP ports

Use the lower numbered ports for general connectivity.

The highest numbered port is used for MirrorView connections. All ports can be used for other

general connections but it is recommended to keep the high port exclusively for mirroring. If

MirrorView is not installed then the high ports should be used for general connectivity.

Dell/EMC CX Series Initial Configuration

Best Practices Planning 26

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Dell DAE Installation Manual Page 26