HP 4400 HP B-series Fabric OS 6.4.1b Release Notes (5697-0886, March 2011-incl - Page 24

Scalability, Important notes and recommendations

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On the website: 1. Under Storage, select Storage Networking. 2. Select the link for the appropriate switch, select your product, and then select Cross operating system (BIOS, firmware, Diagnostics, etc.). 3. Select Firmware. 4. Select V6.x Firmware for HP StorageWorks B-series Fibre Channel Switches for Fabric OS 6.4.1b. • To download the firmware, click Download. • To read the release notes, click the Release Notes tab. To verify that the firmware download is complete, enter the firmwareDownloadStatus command on the switch, verify that the process is complete, and then proceed to the next switch. Scalability For details on supported scalability, see the HP StorageWorks SAN Design Reference Guide, available on the HP website: http://www.hp.com Important notes and recommendations This section contains additional information that you should consider before you use this Fabric OS release. Management Server Platform Capability support changes in Fabric OS 6.4 Fabric OS 6.4.x no longer automatically enables the Management Server (MS) Platform capability when a switch attempts to join a fabric that has these services enabled. This prevents a Fabric OS 6.4.x switch from joining such a fabric, and ISL is disabled with a RAS log message. To allow a Fabric OS 6.4.x switch to join such fabrics, you should use the msPIMgmtActivate command to enable the Management Server platform services explicitly. FCIP, FCIP Trunking and High Bandwidth (1606 Extension SAN Switch and DC SAN Director Multiprotocol Extension Blade) • The 1606 Extension SAN Switch/DC SAN Director Multiprotocol Extension Blade supports a maximum MTU size of 1500 with Fabric OS 6.4x. • FCIP connections are supported only between the 1606 Extension SAN Switch/DC SAN Director Multiprotocol Extension Blade and another 1606 Extension SAN Switch/DC SAN Director Multiprotocol Extension Blade. FCIP tunnels are not supported between the 1606 Extension SAN Switch/DC SAN Director Multiprotocol Extension Blade and the previous generation HP StorageWorks 400 Multiprotocol Router and HP StorageWorks Multiprotocol Router Blade platforms. • When additional circuits (and the network bandwidth provided by those circuits) are added to an already active tunnel, there is a short period where some frame loss can occur due to the process to refresh the internal FC frame routing tables in the switch. Therefore, additional circuits should be added only during low I/O periods using the FCIP tunnel being modified. In addition, if the circuit operation (addition/deletion) to the tunnel increases or decreases the total tunnel bandwidth, an FCIP tunnel (VE_Port) disable/enable sequence should be performed after the addition or deletion of the circuit. This allows the switch to adjust the internal routes to fully utilize the new bandwidth. • Switching modes between 10G and 1G is disruptive to FCIP traffic. • Keep Alive Timeout (ms). The valid range is 500 ms to 7,200,000 ms (inclusive). The default value is 10,000 ms (10 seconds). If FICON is configured, the recommended value is 1000 24

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On the website:
1.
Under Storage, select
Storage Networking
.
2.
Select the link for the appropriate switch, select your product, and then select
Cross operating
system (BIOS, firmware, Diagnostics, etc.)
.
3.
Select
Firmware
.
4.
Select
V6.x Firmware
for HP StorageWorks B-series Fibre Channel Switches for Fabric OS
6.4.1b.
•
To download the firmware, click
Download
.
•
To read the release notes, click the
Release Notes
tab.
To verify that the firmware download is complete, enter the
firmwareDownloadStatus
command
on the switch, verify that the process is complete, and then proceed to the next switch.
Scalability
For details on supported scalability, see the
HP StorageWorks SAN Design Reference Guide
,
available on the HP website:
h
t
tp://w
w
w
.hp
.co
m
Important notes and recommendations
This section contains additional information that you should consider before you use this Fabric
OS release.
Management Server Platform Capability support changes in Fabric OS 6.4
Fabric OS 6.4.x no longer automatically enables the Management Server (MS) Platform capability
when a switch attempts to join a fabric that has these services enabled. This prevents a Fabric OS
6.4.x switch from joining such a fabric, and ISL is disabled with a RAS log message. To allow a
Fabric OS 6.4.x switch to join such fabrics, you should use the
msPIMgmtActivate
command
to enable the Management Server platform services explicitly.
FCIP, FCIP Trunking and High Bandwidth (1606 Extension SAN Switch and DC SAN
Director Multiprotocol Extension Blade)
•
The 1606 Extension SAN Switch/DC SAN Director Multiprotocol Extension Blade supports
a maximum MTU size of 1500 with Fabric OS 6.4x.
•
FCIP connections are supported only between the 1606 Extension SAN Switch/DC SAN
Director Multiprotocol Extension Blade and another 1606 Extension SAN Switch/DC SAN
Director Multiprotocol Extension Blade. FCIP tunnels are not supported between the 1606
Extension SAN Switch/DC SAN Director Multiprotocol Extension Blade and the previous
generation HP StorageWorks 400 Multiprotocol Router and HP StorageWorks Multiprotocol
Router Blade platforms.
•
When additional circuits (and the network bandwidth provided by those circuits) are added
to an already active tunnel, there is a short period where some frame loss can occur due to
the process to refresh the internal FC frame routing tables in the switch. Therefore, additional
circuits should be added only during low I/O periods using the FCIP tunnel being modified.
In addition, if the circuit operation (addition/deletion) to the tunnel increases or decreases the
total tunnel bandwidth, an FCIP tunnel (VE_Port) disable/enable sequence should be performed
after the addition or deletion of the circuit. This allows the switch to adjust the internal routes
to fully utilize the new bandwidth.
•
Switching modes between 10G and 1G is disruptive to FCIP traffic.
•
Keep Alive Timeout (ms). The valid range is 500 ms to 7,200,000 ms (inclusive). The default
value is 10,000 ms (10 seconds). If FICON is configured, the recommended value is 1000
24