Active/Standby Scenario
The black arrows represent active symbolic links (i.e. the files on Server
1 are actively linked to the shared storage device after the resource is
created).
Configuration Notes
During the creation of the SAMS resource instance on the primary server
(i.e. Server 1), the Recovery Kit moves the /etc/md, /etc/mail, and
/var/md/store to the shared file system. It then creates a symbolic link on the
local server (Server 1) to the file on the shared device.
IMPORTANT: If your specific SAMS configuration requires any other files
to be LifeKeeper-protected (or shared between the two servers), these files
must be manually moved to the shared file system and linked back to their
original location on each server after the creation of the SAMS resource
hierarchy.
Figure 4 During Extension of the SAMS Resource Hierarchy
Server 1 Shared
Storage Server 2
etc/mail
etc/md
var/md/store
mqueue
/etc/mail
/etc/md
/var/md/store
/var/spool/mqueue* /var/spool/mqueue*
/etc/mail
/etc/md
/var/md/store
* The symbolic link /var/spool/mqueue/ must be created manually.
The gray files and directories are symbolically linked to files on the
shared storage device.
The black arrows represent active symbolic links (i.e. the files on Server
1 are still actively linked to the shared storage device after the resource
is extended).
14 SAMS Recovery Kit Administration Guide