Raid 10; Raid 1E - Inspur 3008 Series Configuration Manual

1.2.5 RAID 10

RAID 10 is a combination of RAID 1 and RAID 0. RAID 10 requires at least 4 drives. It
delivers the best performance, protection, and capacity among all RAID levels. In
RAID 10, mirrored drives are in pairs, and their data is stripped on the entire array.
In most cases, RAID 10 can resist failures of multiple drives at the same time, and is
able to better ensure stable running of the system. Data loss is least likely to
happen in RAID 10. RAID 10 is a perfect choice for data protection because of the
same redundancy feature as RAID 1 (mirroring).
Figure 1-5 RAID 10

1.2.6 RAID 1E

RAID 1E is the enhanced version of RAID 1, which integrates data striping and
mirroring to enhance the data recovery capability. However, since all data gets
written at least twice, the load is increased in the RAID processor, thereby lowering
read/write speed of drives. Like RAID 1, RAID 1E data is mirrored, so the logical
drive capacity is half the total capacity of all member drives. RAID 1E requires at
least 3 drives.
Figure 1-6 RAID 1E
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