Mpio PD 100 Technical Information download pdf (Page 20)

20 EqualLogic Configuration Guide | Version 15.2 | August 2014

5 Controller firmware

5.1 About member firmware

Each control module in a group member must be running the same version of the PS Series firmware.

Firmware is stored on a compact flash card or a microSD card on each control module.

Dell recommends the following:

 Always run the latest firmware to take advantage of new features and fixes.

 All group members must run the same firmware version. If you are adding a new array to a group,

update the group to the latest firmware before adding the new member.

 Dell does not support groups running with mixed-firmware versions, except when you are in the

process of upgrading the firmware of the entire group, and then only for as long as it takes to do the

upgrade.

 You can upgrade member firmware to a higher version or downgrade member firmware to a lower

version. In some firmware releases, firmware downgrades are not allowed. See the Dell EqualLogic

PS Series Storage Arrays Release Notes for version-specific information about the firmware running

on your group member(s).

 For instructions on how to update the firmware, see the document

Updating Firmware for Dell

EqualLogic PS Series Storage Arrays

, available at the EqualLogic customer support site:

https://eqlsupport.dell.com/support/download.aspx?id=1502

Each EqualLogic PS Series array runs a core operating system in firmware that provides all of the PS Series

features and functionality. The firmware version is defined using a version number and will be updated

from time to time as new features are added or for general maintenance improvements.

The firmware version number takes the following form: "

X.Y.Z"

 "X" is used to identify the "major" release number. This changes when there are very significant

changes in the features and functionality.

 “Y" is the "minor" release number. This changes as new minor features or improvements in existing

features are made for a given major release.

 "Z" denotes maintenance releases. This changes whenever a maintenance release level is released to

resolve any identified technical or usability issues.

5.2 Firmware upgrade considerations

Before beginning a firmware upgrade process, review the following documentation. These documents are

available from the Dell EqualLogic Support site at

https://eqlsupport.dell.com/support/download.aspx?id=6442455075&langtype=1033 (Support ID required

for login access). These documents include:

 Release Notes and Fix List for the firmware version to which you are upgrading

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Mpio PD 100 Technical Information Page 20