NEC M100, User Manual

Page: 299 / 459

Release 6.0
299
User Guide Chapter 10 Troubleshooting
a. Checking the cable connection
Check whether the cable connection between the host and disk array, including switches is
correct.
b. Checking the IP address and other settings of the connected devices
Check the IP address and subnet mask settings of the connected devices including the host.
For the checking method, refer to the manual of the host.
c. Checking the connection devices such as switches
When the host and disk array are connected via a switch, check the switch settings. For the
checking method, refer to the manual of the switch.
2. Checking iSNS
When iSNS is used and the disk array and host information cannot be applied to the iSNS server,
check the following. When iSNS is not used, or the problem has been corrected, go to 3. “Checking
the LD Set settings of the disk array”.
Check items

Check whether the iSNS server-related connection between the host and disk array is correct.

Check whether the iSNS server-related IP addresses of the host and disk array are correct, and
whether the TCP port number is correct.
For how to change the iSNS settings of the disk array, refer to the manual of NEC Storage Manager.
3. Checking the LD Set settings of the disk array
Check the Access Control and CHAP authentication settings of the disk array. After checking and
changing the settings, go to 4. “Checking the host settings”.
LD Set log collection method
After collecting the LD Set information by using NEC Storage Manager, check the settings below.
For how to collect the LD Set information, refer to the manual of NEC Storage Manager.
(3)-1 Checking the settings related to Access Control
a. Check that the initiator name set to the LD Set is the same as that of the host.
b. Check that the IP address of the iSCSI port of the disk array, which has been set to the LD Set,
is correct.
c. Check that the logical disks assigned to the host as an LD Set is correct.
(3)-2 Checking the CHAP authentication settings
Check whether CHAP is enabled or disabled by referring to the CHAP authentication /
bidirectional CHAP authentication settings of the initiator (host) and NEC Storage Manager.
For how to change the settings of NEC Storage Manager, refer to the manual of NEC Storage
Manager.
Be sure to specify the number of the following registered ports for the port number.

iSCSI port: 3260 (The iSCSI port number of the M500 series disk array is defined to
this number.)

iSNS port: 3205 (Specify the iSNS port number from NEC Storage Manager.)