Managing Serviceguard Extension for SAP Version B.05.10, September 2010

Table 4-4 General File System Layout for liveCache (Option 3) (continued)
Mount PointPackageStorage Type
/var/spool/sql/ini
sapnfsautofs shared
* only valid for liveCache versions lower than 7.6.
Option 4: Hot Standby liveCache
Two liveCache instances are running in a hot standby liveCache cluster during normal operation.
No instance failover takes place. This allows to keep instance-specific data local to each node.
The cluster design follows the principle to share as little as possible.
The following directories are relevant:
Table 4-5 File System Layout for Hot Standby liveCache
Volume ManagerMount PointPackageAccess Point
any
/sapdb/<LCSID>
nonelocal
any
/sapdb/programs
nonelocal
any
/sapdb/data
nonelocal
any
/var/spool/sql/ini
nonelocal
must be
LVM-based
/sapdb/<LCSID>/datan
nonelocal; with XP BCVs
between the nodes
must be
CVM-based
/sapdb/<LCSID>/logn
SG-CFS-DG-<LCSID>logn
SG-CFS-MP-<LCSID>logn
shared disk and CFS
MAXDB Storage Considerations
SGeSAP supports current MAXDB, liveCache and older MAXDB releases. The considerations
made below will apply similarly to MAXDB, liveCache and MAXDB clusters unless otherwise
indicated.
MAXDB distinguishes an instance dependant path /sapdb/<DBSID> and two instance
independent paths, called IndepData and IndepPrograms. By default all three point to a
directory below /sapdb.
The paths can be configured in a configuration file called
/var/spool/sql/ini/SAP_DBTech.ini. Depending on the version of the MAXDB database
this file contains different sections and settings.
A sample SAP_DBTech.ini for a host with a MAXDB 7.4 (LC1) and an APO 3.1 using a MAXDB
7.3 database instance (AP1):
[Globals]
IndepData=/sapdb/data
IndepPrograms=/sapdb/programs
[Installations]
/sapdb/LC1/db=7.4.2.3,/sapdb/LC1/db
/sapdb/AP1/db=7.3.0.15,/sapdb/AP1/db
[Databases]
.MAXDBLC=/sapdb/LC1/db
LC1=/sapdb/LC1/db
_MAXDBAP=/sapdb/AP1/db
AP1=/sapdb/AP1/db
[Runtime]
/sapdb/programs/runtime/7240=7.2.4.0,
/sapdb/programs/runtime/7250=7.2.5.0,
/sapdb/programs/runtime/7300=7.3.0.0,
/sapdb/programs/runtime/7301=7.3.1.0,
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