Configure Sybase hot standby in RedHatLinux5.4

CLVM (ClusterLogicalVolumeManager), cluster logical volume manager iSCSI, IP-based SAN (Storage Area Network) technology three optional component relationships: 1) storage devices can be accessed by other hosts through iSCSI. 2) use CLVM to dynamically manage shared Disks Based On iSCSI. 3) Use GFS2 to implement concurrent file systems based on CLVM. Example 1) server A shares/dev/sdb1 and/dev/sdb2 with iSCSI to server B and server C. 2)

CLVM (Cluster Logical Volume Manager), Cluster Logical Volume Manager
ISCSI, IP-based SAN (Storage Area Network) Technology
The relationship between the three optional components is:
1)
Enable storage devices to be accessed by other hosts through iSCSI
2)
Dynamic Management of Shared disks using CLVM Based On iSCSI
3)
Use GFS2 to implement concurrent File System Based on CLVM
Example:
1)
Server A shares/dev/sdb1 and/dev/sdb2 with iSCSI to server B and server C.
2)
After B accesses the shared storage of host A through iSCSI, CLVM enables host A to dynamically adjust the capacity of/dev/lv01 composed of sdb1 and sdb2 of host, the C machine obtains the latest LVM information through CLVM synchronization in the cluster.
3)
If both B and C need to read/dev/lv01 (such as Oracle RAC) at the same time, use GFS2 to achieve concurrent access to the file system and ensure data integrity.
2
Configure Sybase HA in RHEL 5.4
2.1
Target
Sybase Hot Standby is successfully implemented under RHCS.
Storage networks are built through iSCSI to achieve automatic switch of floating IP addresses, automatic mounting of storage devices, and automatic start of Sybase.

RedHat Linux 5.4 configuration Sybase dual-host Hot Standby PDF Version Download HERE http://www.linuxidc.net/thread-2277-1-1.html