Directory Server and IBM i IASP support

From i 7.1, the Directory Server on IBM i® begin to partly support Private IASP. Up to i 7.2, the Directory Server on IBM i® can fully support IASP including Private IASP and Switchable IASP.

An independent disk pool, or independent auxiliary storage pool (IASP), is a collection of disk units used by IBM i® that can be brought online or taken offline independent of the rest of the storage on a system, including the system ASP, user ASPs, and other independent disk pools.

An independent disk pool can be either:

  • Private: Privately connected to a single system, also known as stand-alone IASPs
  • Switchable: Switched between two systems or partitions in a clustered environment
In i 7.1, the Directory Server on IBM i® supports Private IASP:
  • Database library located in IASP
  • Change log library located in IASP

Because LDAP instance configuration files, schema files and configuration library cannot be located in IASP, an instance is not switchable in i 7.1. From i 7.2, all the data referred mentioned can be put into a single IASP, thus the whole LDAP instance is switchable. This is very important for applications that are based on HA(High Availability) technology.

You can follow the following procedures to create and configure LDAP server instance on IASP:
  1. Before creating instance on an IASP, the IASP must be configured and available.
  2. Use IBM® Navigator for i Create Instance Wizard to create a new instance:
    • On System i Navigator, the ASP number and IASP number are both listed in Disk pool for the user to choose.
    • On IBM Navigator for i, the ASP Name and IASP Name are listed for the user to choose.
You can also configure an existing instance to use IASP by changes the configuration file:
  • Change the value of attribute ibm-slapdDbName under cn=Directory, cn=RDBM Backends, cn=IBM Directory, cn=Schemas, cn=Configuration from *SYSTEM to an IASP device name.
  • Change the value of attribute ibm-slapdDbName under cn=CHANGE LOG, cn=RDBM Backends, cn=IBM Directory, cn=Schemas, cn=Configuration from *SYSTEM to an IASP device name.