HP StorageWorks Fabric OS 5.3.1a release notes (AA-RWEYJ-TE, May 2008)

ManualsBrandsHP ManualsStorageHP StorageWorks 4/256 SAN Director Switch Power Pack

Topic Description

iSCSI

• Enterprise storage array targets may not show up consistently in the disk

management window of an iSCSI initiator when the same LUNs are mapped

to two different virtual targets (VTs). When the initiator logs in to the VTs, the

targets keep disappearing from the disk management window. If the session

to one of the VTs is disconnected, the remaining VT appears and stabilizes in

the disk man agement window.

• Under cer tain conditions, hosts on an I P net work may not be able to issue

a ping command to iSCSI gateway ports in another subnet. You can work

around this problem by issuing a ping c omm and from the iSCSI gateway

port. The hosts will then be able to successfully issue ping commands to the

iSCSI gateway port.

• An IP network d isconnection lasting ﬁvesecondsormoremaycauseCOPA

failure on the disconnected PC, which in turn may cause a loss of connection

to an enterprise storage array

• If trafﬁc is run from hosts to certain targets with severe impairment conditions

in the IP network for hours at 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 unlikely 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 F

abric OS 5.3.0 and later, a zone with the name “broadcast” (case-sensitive)

is a

special zone for setting up recipients of broadcast packets. In Fabric OS

ver

sions earlier than 5.3.0, a zone named “broadcast” does not have special

gniﬁcance. Therefore, you must make sure that if a broadcast zone is conﬁgured,

entheactiveandstandbyCPsusethesameFabricOSversion.Otherwisean

failover might change the zone conﬁguration.

Faulty SFPs

External port with a faulty SFP will be disabled, then enabled once good SFP is

inserted. However, port will still show as faulty even though it is healthy. To get

the correct "healthy" indication, after enabling the port with the good SFP, remove

and re-insert it and the port will then show as healthy.

FC Fast Write

Note the following important information when using 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.

• 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 that host talks to should be connected to a 400 MP Router or B-Series

MP Router Blade in FC Fast Write mode. FC Fast Write should not be enabled

on 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 and frame may be dropped.

• Within the context of FC Fast Write, L_Port is not supported in Fabric OS

5.3.0 and later.

Web Tools

When th e regional language is set to anything other th an English, Brazilian

Portuguese,French,German,Italian,Japanese,Korean,TraditionalChinese,

Simpliﬁed Chinese or Spanish, Web Tools may not ﬁnish loading when

connecting to a switch running FOS 5.3.0, 5.3.0a or 5.3.0b. The Switch Explorer

progress bar hangs while initializing switch details. This problem is overcome by

changing the regional settings for th e operating system to English and re-loading

Web Tools or by upgrading to 5.3.0c or later.