User Guide

AMD-RAIDXpert2 User Guide
53987 Rev. 3.01 June 2016
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Arrays, Disks and RAID Levels
Chapter 3
3.6 Migrating RAID Levels Online: Using ORLM
(Supported by RAIDXpert2 Plus)
Online RAID Level Migration (ORLM) allows an array to move from one RAID level to almost
any other RAID level. This task includes migrating the array from a non-redundant RAID level to
a redundant RAID level.
Prior to starting a RAID level migration/transformation, make sure that the disks selected for the
destination array have sufficient capacity. RAID level migration/transformation can occur only
when the destination array has the same or larger capacity as the source array.
While the migration/transformation is taking place, data is accessible and protected to the lowest
protection of either the source RAID level or the destination RAID level.
The Transform task can also be used to expand the capacity of an array, by using OCE. It can also
be used as part of the system backup and recovery strategy through the use of the RAID1 and
RAID10 levels.
To perform this process, see Section 6.6.3, Transform Arrays (Supported by RAIDXpert2 Plus),
on page 73.
3.7 Array Tasks: Starting and Stopping Tasks
Tasks are started when one of the following actions are performed:
 Create a redundant array.
 Transform an array.
 Restore an array.
 Securely erase an array.
 Check for consistency on redundant arrays.
 Verify that data was not corrupted after a system crash (Check_Bitmap performed
automatically).
Full task control can be used on Create, Consistency Check and Bitmap Check tasks. On a
Transform or Restore task for dedicated and global spares, task control can only pause/resume, but
it cannot remove the task. To remove these types of tasks, pause and then remove them.
The tasks indicated in Table 10 on page 29, can be displayed for each array.