Hardware requirements for independent disk pools

 

Depending on how you plan to use independent disk pools, have specific hardware and operating system releases.

Environments
independent disk pool use Requirements
Single system Stand-alone independent disk pool One system running OS/400® V5R1M01 or later.
Multiple systems

Use either multiple systems or multiple partitions, by doing one of the following:

  • Two or more systems.

  • One system running with logical partitions.

The version of i5/OS® or OS/400 must be compatible.

Switchable independent disk pools One or more switchable device, do one of the following:

  • One or more expansion units (frame/units) residing on a high-speed link (HSL) loop.

  • One or more IOPs on a shared bus or an IOP that is assigned to an I/O pool2.
Geographic mirroring3 Two or more systems each with sufficient disk space to create the independent disk pools of similar, but not necessarily matching, capability.

Consider including hardware for the IP connections. See Communications requirements for more details.

Notes:

  1. OS/400 V5R1M0 only provides independent disk pools containing user-defined file system (UDFS). OS/400 V5R2M0 and later supports library-based objects.

  2. In an LPAR environment, you can switch the IOP that contains the independent disk pools between system partitions without having an expansion unit. The IOP must be on the bus shared by multiple partitions or assigned to an I/O pool. All IOAs on the IOP will be switched.

  3. OS/400 V5R3M0 and later provides support for geographic mirroring.

 

Parent topic:

Planning for independent disk pools

Related concepts
Communications requirements