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VessRAID 1000i Series Product Manual
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RAID 6 – Block and Double Parity Stripe
RAID level 6 stores dual parity data is rotated across the physical drives along
with the block data. A RAID 6 logical drive can continue to accept I/O requests
when any two physical drives fail.
Figure 5. RAID 6 stripes all drives with data and dual parity
Hence, a RAID 6 logical drive with (7) 100 GB physical drives will have a capacity
of 500 GB. A RAID 6 logical drive with (4) 100 GB physical drives will have a
capacity of 200 GB.
RAID 6 becomes more capacity efficient in terms of physical drives as the
number of physical drives increases.
RAID 6 provides double fault tolerance. Your logical drive remains available when
up to two physical drives fail.
RAID 6 is generally considered to be the safest RAID level.
A RAID 6 on VessRAID consists of 4 to 16 physical drives.
Double Distributed (Wide-space Q+Q) Parity
Physical Drives
Data
Blocks
Summary of Contents for VessRAID 1720i
Page 1: ...VessRAID 1720i 1730i 1740i 1820i 1830i 1840i Product Manual Version 1 1 ...
Page 16: ...VessRAID 1000i Series Product Manual xvi ...
Page 114: ...VessRAID 1000i Series Product Manual 98 The changes take effect immediately ...
Page 126: ...VessRAID 1000i Series Product Manual 110 Figure 8 Disk Status LED Disk Status ...
Page 154: ...VessRAID 1000i Series Product Manual 138 ...
Page 165: ...Chapter 5 Management with the CLU 149 Figure 4 Controller Status LED Controller Status ...
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