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Chapter 9: Technology Background
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
Data
Blocks
Double Distributed (Wide-space Q+Q) Parity
Physical Drives
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 ASUS Storage consists of 4 to 32 physical drives.
Содержание DS300f
Страница 1: ...ASUS Storage DS300f DS300i User Manual Version 1 0 ...
Страница 10: ...x Language 178 Closing Smart NAS Console 178 ...
Страница 27: ...8 Chapter 1 Introduction to ASUS Storage ...
Страница 57: ...3 8 Chapter 2 ASUS Storage Installation ...
Страница 73: ...54 Chapter 3 ASUS Storage Setup ...
Страница 164: ...14 5 Chapter 4 Management with ASUS Storage Management ...
Страница 221: ...202 Chapter 5 SmartNAVI ...
Страница 235: ...216 Chapter 6 Management with the CLU Figure 4 Controller Status LED Controller Status ...
Страница 337: ...318 Chapter 8 Maintenance ...
Страница 425: ...406 Chapter 11 Support ...
Страница 433: ...414 Appendix A Setting up NAS Network Drives ...
Страница 449: ...430 Index ...