User guide

• Special Notes for HP Data Protector backup/restore application:
For the Tape Pool encryption policy specification on Windows Systems, HP Data Protector
can be used with tape pool encryption specification only if the following pool label options
are used (for other options, behavior defaults to Tape LUN encryption policy):
◦
– Pick from Barcode
– User Supplied; no more than nine characters
◦ On HP-UX systems, HP Data Protector cannot be used with tape pool encryption
specification for any of the pool options. The behavior defaults to Tape LUN Encryption
Policy.
◦ For the Tape LUN encryption policy specification, no restrictions, tape LUN encryption
policy specification can be used with HP Data Protector on HP-UX and Windows systems.
• HP StorageWorks Encryption SAN Switch/HP StorageWorks DC Switch Encryption FC Blade
rejects the SCSI commands write same and extended copy, which are related to VAAI
(vStorage APIs for Array Integration) hardware acceleration in vSphere 4.1. This results in
non-VAAI methods of data transfer for the underlying arrays, and may affect the performance
of VM related operations.
FCIP (HP DC SAN Director Multiprotocol Extension Blade, HP 1606 SAN Extension Switch and
HP StorageWorks B-series Multi-protocol Router Blade)
• HP DC SAN Director Multiprotocol Extension Blade and HP StorageWorks B-series
Multi-protocol Router Blade blades cannot coexist in an HP StorageWorks DC SAN Backbone
Director Switch or an HP StorageWorks DC04 SAN Director Switch chassis.
• IPSec is supported on VE group 12 – 21 and not supported on VE group 22 – 31.
• IPSec is supported on FCIP tunnels that use only IPv4 connections.
• To enable IPSec, both ends of the tunnel must be running Fabric OS 7.0.0x.
• FICON networks with FCIP tunnels do not support DPS (aptpolicy 3) configurations. This applies
to both emulating and non-emulating FCIP tunnels.
• Both ends of FICON emulating tunnels must run Fabric OS 7.0.0x.
• The maximum supported MTU size for the Brocade HP 1606 SAN Extension Switch/HP DC
SAN Director Multiprotocol Extension Blade is 1500.
• FCIP connections are supported only between the HP 1606 SAN Extension Switch/HP DC
SAN Director Multiprotocol Extension Blade and another HP 1606 SAN Extension Switch/HP
DC SAN Director Multiprotocol Extension Blade. FCIP tunnels are not supported between the
HP 1606 SAN Extension Switch/HP DC SAN Director Multiprotocol Extension Blade and the
previous generation HP StorageWorks 400 Multi-protocol Router /HP StorageWorks B-Series
Multi-protocol Router Blade platforms.
• When multiple FCIP tunnels are present on a switch and additional circuits (and the network
bandwidth provided by those circuits) are added to an already active tunnel, there may be
a short time where some frame loss can occur due to the process to re-fresh the internal FC
frame routing tables in the switch. Therefore, additional circuits should be added only during
low I/O periods utilizing the FCIP Tunnel being modified. In addition, if the circuit operation
(addition/deletion) to the tunnel increases/decreases the total tunnel bandwidth, an FCIP
Tunnel (VE port) disable/enable sequence should be performed after the addition/deletion
of the circuit. This allows the switch to adjust the internal routes to utilize the new bandwidth
fully.
• Switching modes between 10 Gbps and 1 Gbps is disruptive for FCIP traffic.
• The FCIP Circuit Keep alive timeout has a Fabric OS default value of 10000 ms (10 seconds).
If FICON is configured, the recommended value is 1000 ms (1 second). The Keep Alive value
Important notes and recommendations 29