HP StorageWorks Fabric OS 6.0.0b release notes (5697-7345, April 2008)

Topic Description
FC fast Write
• Only World Wide Name (WWN) zone (including normal zone and FC Fast
Write zone) is supported on FC Fast Write enabled port.
• Only single device loop port is supported.
• N_Port ID Virtualization (NPIV) (example Access Gateway) port is not
supported.
• FCR backbone devices are not supported. That is FC Fast Write should not
be enabled on backbone devices.
• FCR edge to edge support is limited by all the target devices on given edge
fabric th at host talks to should be connected to a 400 Multi-protocol Router
orFR4-18iinFCFastWritemode. FCFastWriteshouldnotbeenabledon
ports when testing the remote mirror application.
• When a very high volume of traffic is being sent by host, FC Fast Write IOs
may time out an d frame may be dropped.
• Within the context of FC Fast Write, L_Port is not supported.
iSC
SI
• Enterprise storage array targets may not show up consistently in the disk
manage
ment window of an iSCSI initiator when the same LUNs are mapped
to two different virtual targets ( VTs). When the initiator logs in to the V Ts, the
targe
ts keep disappearing from the disk m anagement window. If the session
to one of the VTs is disconnected, the remaining VT appears a nd stabilizes in
the disk management window.
• Under certain condit ions, hosts on an IP network may not be able to issue a
ping command to iSCSI gateway ports in another subnet. You can work
aro
und this problem by issuing a ping command from the iSCSI gateway
port. The hosts will then be able to successfully issue ping commands to the
iSCSI gateway port.
• An IP network disconnection lasting fivesecondsormoremaycauseCOPA
fa
ilure on the disconnected PC, which in turn may cause a loss of conn ection
t
oanenterprisestoragearray.
• I
ftraffic is run from hosts to certain targets with severe impairment conditions
in the IP network for hours at a time, throughput to the targets will drop,
and may take up to 10 minutes to recover after the impairment condition is
removed. Note that this problem is highly intermittent, and is u nlikely to be
seen in a customer environment. We believe that this issue is the result of
host/target interaction, and is not the result of action on the iSCSI gateway.
• A Microsoft windows PC host was unable to discover enterprise storage array
LUNs. The Microsoft iSCSI initiator is able to discover targets if the software is
uninstalled and reinstalled without the MPIO option.
Broadcast zones
In Fabric OS 5.3.x, a zone with the name “broadcast” (case sensitive) is a special
zone for setting up recipients of broadcast packets. In Fabric OS versions earlier
than 5.3.x, a zone named “broadcast” does not have special significance.
Therefore, you must make sure that if a broadcast zone is configured, then the
active and standby CPs should be running the same Fabric OS version. Otherwise
an HA failover might change the zone configuration.
Refer to the HP StorageWorks Fabric OS 6.x administrator guide for additional
information about broadcast zones.
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