SAN hosts must adhere to specific requirements in order to properly connect to an Oracle FS System.
Access to the LUNs on an Oracle FS System can be affected by an issue found on certain Solaris hosts. Those hosts that can be affected are running certain Solaris 11 Support Repository Updates or certain Solaris 10 kernel patches. For those Solaris hosts, the issue exists for those hosts that also utilize I/O multipathing that connects to Fibre Channel storage devices with asymmetric access. Such storage devices include the Oracle FS System.
(https://support.oracle.com/rs?type=doc&id=1986424.1).
All Linux users with QLogic adapters are advised to upgrade the QLogic driver to 8.07.00.16-k or later. This driver upgrade enables the Linux client to handle correctly any warmstarts that occur in an Oracle FS System Controller.
QLogic adapters without this driver upgrade do not properly log out after a Controller warmstart. The improper logout requires the Oracle FS System software to recognize that condition and to force an explicit logout. Usually this handling succeeds. When this handling does not succeed, loss of I/O from the adapter to the LUNs on that Controller can result.
In order to ensure data availability, all SAN hosts must be equipped with a multipath driver.
FS1-2 LUNs are Asymmetric Logical Unit Access (ALUA) and require an ALUA-aware host.
In order to ensure continued data availability, SAN hosts must have at least two connections to the FS1-2, one to each Controller.
For complete information on SAN hosts requirements, refer to the Oracle Flash Storage System Support and Interoperability Guide.