Ramdisk Release Notes for HP-UX 11i v2

Benefits
Ramdisk offers the following benefit:
• Can operate at memory speed, which provides very high throughput. Applications
that require high throughput can use this feature.
• The swappable Ramdisk volume size can be bigger than physical system memory.
Installing Ramdisk
The system memory can be configured for use as a Ramdisk after installing the required
patches on the system.
This following sub-section provides information about the software requirements,
hardware requirements, and patch requirements for configuring Ramdisk.
Software Requirements
The following software must be installed on the system:
• PHKL_36321 and PHCO_34421
• HP-UX 11i v2 operating system
Hardware Requirements
The following minimum hardware is required to install the Ramdisk:
• Itanium-based and PA-RISC systems (Mid and High-end systems)
Installing the Ramdisk Patches
The patches PHKL_37170 and PHCO_37169 must be installed on the system. These
patches are available for download at:
http://h20293.www2.hp.com
For more information about installing the patches, deleting the patches, and verifying
the installation using the SD commands, see the Website at:
http://docs.hp.com/en/5992-2146/index.html
Creating and Deleting a Ramdisk Instance
You can create a Ramdisk instance after installing the Ramdisk patches.
To create a Ramdisk instance, enter the following command at the HP-UX command
prompt:
$ ramutil -c -v volume_number -s volume_size
Where:
-c Creates a Ramdisk volume
-v Associates a volume number with the Ramdisk
Installing Ramdisk 7