Fujitsu DX440 S2 Computer Drive User Manual


  Open as PDF
of 1066
 
Chapter 9 Connectivity Management
9.2 Functions in the Action Area for Connectivity
ETERNUS Web GUI User’s Guide
Copyright 2013 FUJITSU LIMITED P2X0-1090-10ENZ0
564
Confirm new Password
Specify the same password as that entered in the "New Password" field.
The following input conditions apply:
- 12 - 32 alphanumeric characters and symbols
- Space
REC Settings
REC Line No.
Select the REC line number of the target port.
The REC line number is used to switch the communication path when a line fails. The REC line
number is used to recognize failed lines. Set different REC line numbers for each physical
communication path. When lines are in normal status, an REC can be performed regardless of the
REC line number (specifying the same REC line numbers is allowed) in the same way as
conventional REC operations. Note that no priority applies to REC line numbers.
REC Transfer Mode
Select which REC transfer mode is enabled or disabled for the target port.
When "Enable" is selected, an REC is performed in the selected transfer mode for the target port.
When "Disable" is selected, an REC is not performed in the selected transfer mode for the target
port.
To set the REC transfer mode for the specific port, enable the appropriate mode. For example,
specify different ports for Consistency and Stack to perform data transfers without any interference.
The current setting is retained even when an REC path is changed. When "Enable" is selected for all
of the REC transfer modes (default setting), a conventional REC is performed.
- Sync (REC in synchronous transfer mode)
- Async Stack (REC in asynchronous stack mode)
- Async Consistency (REC in asynchronous consistency mode)
- Async Through (REC in asynchronous through mode)
When a line fails, the communication path is switched according to the REC line number of the
copy source storage system.
The REC transfer mode can be changed without suspending a copy session even when an REC is
being performed in the target port. The changed settings are applied immediately to the
ETERNUS DX Disk storage system.
If specific REC transfer modes for all the RA ports and the CA/RA ports are disabled, a copy
session with a disabled REC transfer mode fails because the REC paths for all the RA ports and
the CA/RA ports are regarded as being blocked. When the REC transfer mode for a copy session
that is being performed is disabled, this copy session is halted.
When "Async Consistency" is disabled for all the RA ports and the CA/RA ports, the REC buffer
status changes to "INACTIVE".
The specified REC transfer mode is performed only when the target port is a copy source.