How to add an iSCSI SAN drive to Linux

969  cd /dev/mapper
970  ls
971  ifconfig
981  iscsiadm -m discovery -t st -p -l eth1
982  iscsiadm -m discovery -t st -p -l eth2
983  ls
984  cd /dev
985  ls
986  ls -l
987  multipath -ll
988  (cd /dev/disk/by-path; ls -l *nimble* | awk ‘{FS=” “; print $9 ” ” $10 ” ” $11}’)
989  multipath -ll
990  vi /etc/multipath.conf
991  service iscsid restart

service multipathd reload
974  fdisk /dev/mapper/vol9000
992  partprobe

How to Troubleshoot SAN, iscsi problems with Windows Server 2003, 2008

1.  Boot server in safe mode to see if it is a network/iSCSI/3rd party service or driver issue.

2.  Disable the iSCSI NICs from within safe mode and see if the server will boot into normal mode.

3.  Enable one iSCSI NIC at a time to see if there is a possible hardware issue.

4.  Remove MPIO and Present iSCSI disks down one path.

5.  Remove any newly presented iSCSI disks to see if it is an issue with new storage.

6.  Configure machine to manually generate a system crash and collect a complete memory dump using CTRL+Scroll+Scroll durring the slow boot period.

972110 How to generate a kernel dump file or a complete memory dump file in Windows Server 2003

If the issue happens even though the iSCSI NIC’s are disabled, you can use MSConfig to disable 3rd party services and startup applications to isolate the service causing the issue