Promise Technology SuperTrack TX8658 Uživatelský manuál Strana 182

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SuperTrak TX Series User Manual
170
RAID 10 – Mirror / Stripe
Mirror/Stripe combines both of the RAID 0 and RAID 1 logical drive types. RAID
10 is similar though not identical to RAID 0+1. It can increase performance by
reading and writing data in parallel while protecting data with duplication. The
data on one drive pair is mirrored together, then striped over a second drive pair.
Figure 3. RAID 10 takes a data mirror on one drive pair and stripes it over a
second drive pair
The data capacity RAID 10 logical drive equals the capacity of the smallest
physical drive times the number of physical drives, divided by two.
In some cases, RAID 10 offers double fault tolerance, depending on which
physical drives fail.
RAID 10 arrays require an even number of physical drives and a minimum of
four.
Data Stripe
Data
Mirror
Physical Drives
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