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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
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• Confirm new Password (RA)
Specify the same password as that entered in the "New Password (RA)" field.
The following input conditions apply:
- 12 - 32 alphanumeric characters and symbols
- Space
• Header Digest
Select "OFF" to not add the Header Digest of the target port. Select "CRC32C" to add the Header
Digest. Header Digest is a check code to be added to the header part of the iSCSI port detailed
information.
Specify "CRC32C" when the host requests to add the check code. "CRC32C" is the algorithm that is
used to create a check code.
• Data Digest
Select "OFF" to not add the Data Digest of the target port. Select "CRC32C" to add the Data Digest.
Data Digest is a check code to be added to the data area of the iSCSI port detailed information.
Specify "CRC32C" when the host requests to add the check code. "CRC32C" is the algorithm that is
used to create a check code.
● 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.
Data transmission might fail when "Header Digest" or "Data Digest" is enabled. In this case, select
"OFF" for "Header Digest" and "Data Digest".
• When a line fails, the communication path is switched according to the REC line number of the
copy source storage system. For normal operation, set the same REC line number for the copy
source and the copy destination storage systems to recover data.
• If the port mode has been changed from "CA/RA" to "CA", the REC line number returns to the
default setting ("0"). When the port mode has changed from "CA/RA" to "RA", the current REC
line number setting is retained. Refer to "9.2.3.11 Modify Port Mode" (page 571)
for details.