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Anleitung Zusammenfassung
DATA CENTER
TECHNICAL BRIEF
OVERVIEW
This document provides guidance for selecting an ideal Brocade® Fabric OS® (FOS) code version for use on Brocade
Fibre Channel (FC) switch platforms, and also for selecting optimum versions of code to use when migrating from
one version of Brocade FOS to another. These recommended Brocade FOS versions are referred to as “Target Path”
releases.
The Brocade FOS Target Path release recommendations in this document should be used in conjunction with advice
and guidance from your Brocade switch vendor, as well as any special requirements and needs of your particular
environment. Always refer to the Brocade FOS Release Notes documentation and carefully review the “Important
Notes and Known Defects” information prior to selecting and installing any version of Brocade FOS on a switch.
This document will be updated on a periodic, as-needed basis to reflect the latest Brocade FOS Target Path release
recommendations. Always check for the latest revision when planning to install a new Brocade FOS release on a
Brocade FC switch.
DEFINITION OF TARGET PATH RELEASE
A Brocade FOS release may be identified as a Target Path release only if it meets the following criteria:
It is a Brocade FOS version of firmware that was created primarily for stability and reliability, and not for
the introduction of new features. This version of firmware may contain RAS (Reliability, Availability, and
Serviceability) improvements and enhancements, but it typically will not contain any new software
features or support for new hardware.
Most of the Brocade partners and OEMs have qualified and support the firmware version or are
planning to do so in the immediate future. This makes it an ideal option for customer environments
that procure Brocade equipment from more than one vendor.
The specified code level (or an earlier patch at the same release level) must be deployed in a sufficient
number of end-user production environments for a period of at least three months and must have no
known critical issues or defects, including firmware-related issues identified in a Technical Service
Bulletin (TSB).
Once a specific Brocade FOS code version is identified as a Target Path release, newer patches (that is, releases that
vary only with a different letter appended to the release number) that are released on the same code stream can
also be considered as safe as the designated Target Path release. In some situations, it may be ideal to select one of
the later patch releases in order to pick up a fix for an issue that is applicable to a particular site or environment.
These newer patch releases may also be formally announced as the Target Path release for that code level, and in
some cases they may be designated as a Target Path release after less than the three months of customer exposure
time. Since patch releases typically contain minimal changes from their predecessors, the stability of the code has
already been verified in most cases, and it is unnecessary to wait for this additional field exposure.
Note that for FICON® environments, the use of patch releases that are not specifically designated as qualified and
supported for FICON is not recommended.
The Target Path release designation in no way implies or guarantees that a release will be free of defects or will not
contain behavioral issues that could cause an impact in a production environment. However, following the Target
Path release recommendations produces the most trouble-free environments for data center Storage Area Networks
(SANs) using Brocade switching platforms.
Always review the latest version of the Brocade FOS Release Notes for the code level you are loading—as well as the
code level you are migrating off of—prior to updating firmware. The Target Path designation is not a guarantee that
you will not encounter defects or that there are not limitations in upgrading or downgrading firmware levels. Brocade
recommends that all customers review the Release Notes documents to ensure a trouble-free migration and
production environment experience.
Brocade FOS Target Path
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