HP Surestore Disk Array 12h System Administrator's Guide for HP-UX, MPE, and W - Page 26

HP-UX Using the HP-UX System Administration Manager Managing LUNs (Logical Drives) Checking LUN Configuration Anytime you are managing LUNs, you may find it convenient to check the current LUN configuration and the available capacity. The current LUN definitions can be seen on the standard "Disk Devices" screen. The available capacity is displayed as "Unallocated" on the "View Array Status Information" screen. See "Checking Disk Array Status" in this chapter. Creating a LUN Only capacity assigned to LUNs is visible to the HP-UX operating system. When creating LUNs, consider the following factors: • Any size limitations imposed by the operating system, for example, LVM. • Your backup strategy. If you do unattended backup to a device such as tape, you may want to avoid creating a LUN that is larger than the capacity of the media. This allows you to backup an entire LUN without changing media. • Configuring the LUN into LVM for maximum performance as described in Table 2. NOTE! Before creating a LUN, check your operating system documentation for any additional information or steps that may be required to create a LUN. To create a LUN: 1. Select the desired disk array controller from the list on the screen. 2. Select "Actions" on the menu bar. 3. Select "Disk Array Maintenance." 4. Select "Bind LUN . . ." 5. Set the LUN size (not greater than unallocated capacity). 6. Select "OK." 7. Note the new LUN definition in the list of disks and arrays. 26