Additional Drives Required For Raid-Level Migration - Lenovo ThinkServer RD240 Software User's Manual

Table 4.3

Additional Drives Required for RAID-Level Migration

From RAID Level to RAID
Level
RAID 0 to RAID 1
RAID 0 to RAID 5
RAID 0 to RAID 6
RAID 1 to RAID 5
RAID 1 to RAID 6
Note: While you can apply RAID-level migration at any time, it is
recommended that you do so when there are no reboots.
Many operating systems issues I/O operations serially (one
at a time) during boot. With a RAID-level migration running,
a boot can often take more than 15 minutes.
Migrations are allowed for the following RAID levels:
•
RAID 0 to RAID 1
•
RAID 0 to RAID 5
•
RAID 0 to RAID 6
•
RAID 1 to RAID 0
•
RAID 1 to RAID 5
•
RAID 1 to RAID 6
•
RAID 5 to RAID 0
•
RAID 5 to RAID 6
•
RAID 6 to RAID 0
•
RAID 6 to RAID 5
Table 4.3 lists the number of additional drives required when you change
the RAID level of a virtual drive.
Original Number of Drives
in Drive Group
RAID 0: 1 drive
RAID 0: 1 drive
RAID 0: 1 drive
RAID 1: 2 drives
RAID 1: 2 drives
Follow these steps to migrate the RAID level:
Caution: Back up any data that you want to keep before you change
the RAID level of the virtual drive.
1. On the main WebBIOS CU screen, select a virtual drive.
Managing Configurations
Additional Drives Required
1
2
3
1
1
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