Logical Drives (Luns) - HP ML110 G1 User Manual

file system. The WebUI has two types of LUN presentation, basic disk and
dynamic disk. Each of these types of disk has special features that enable
different types of management.

Logical drives (LUNs)

While an array is a physical grouping of hard drives, a logical drive
consists of components that translate physical storage elements into file
system elements.
It is important to note that a LUN may extend over (span) all physical
drives within a storage controller subsystem, but cannot span multiple
storage controller subsystems.
L1
L2
Figure 6
over 5 physical drives
NOTE:
and serves only as an example.
Through the use of basic disks, primary partitions or extended partitions
can be created. Partitions can only encompass one LUN. Through the use
of dynamic disks, volumes can be created that span multiple LUNs. The
WebUI can be used to convert disks to dynamic and back to basic, and
manage the volumes residing on dynamic disks. Other options include
the ability to delete, extend, mirror, and repair these elements.
28 Storage Management Overview
A1
2 arrays (A1, A2) and 5 logical drives (L1 through L5) spread
This type of configuration may not apply to all storage servers
A2
L3
L4
L5