IBM Flex System V7000 Expansion Enclosure 4939H29 User Manual

Draft Document for Review January 29, 2013 12:52 pm

IBM Flex System V7000 Storage Node Introduction and Implementation Guide

external storage systems to IBM Flex System V7000 Storage Node are discovered as 
unmanaged MDisks. 

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Managed: The MDisk is assigned to a storage pool and provides extents to be used by 
volumes.

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Image: The MDisk is assigned directly to a volume with a one-to-one mapping of extents 
between the MDisk and the volume.

By adding 

 to a pool, their status changes to 

. Managed 

MDisks can belong to only one pool. Unmanaged MDisks can either be added to a new pool 
or to an existing pool to expand its capacity. Pools are commonly used to group MDisks from 
the same storage subsystem and with the same class of speed.

A new pool can be created in the MDisks by Pools window by clicking the New Pool icon. 
Assign a name to the pool and choose an icon, if wanted (Figure 8-26). 

The 

 window (Figure 8-27) lets you include unmanaged MDisks in the new pool. 

Several filter options at the top of the window allow you to limit the selection, for example, by 
storage subsystem, capacity, and so on. Several MDisks can be selected by pressing the Ctrl 
key while clicking the MDisks listed with the mouse. Also, the Detect MDisks icon initiates a 
SAN discovery for finding recently attached external storage systems.