Lenovo ThinkServer RD240 MegaRAID SAS Software User Guide - Page 169
Table 4.3, Additional Drives Required for RAID-Level Migration, From RAID Level to RAID, Level
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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. Table 4.3 Additional Drives Required for RAID-Level Migration From RAID Level to RAID Original Number of Drives Level in Drive Group Additional Drives Required RAID 0 to RAID 1 RAID 0: 1 drive 1 RAID 0 to RAID 5 RAID 0: 1 drive 2 RAID 0 to RAID 6 RAID 0: 1 drive 3 RAID 1 to RAID 5 RAID 1: 2 drives 1 RAID 1 to RAID 6 RAID 1: 2 drives 1 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 4-93
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