Please enable JavaScript.
Coggle requires JavaScript to display documents.
RAID - Coggle Diagram
RAID
Levels
RAID 0
Striping Only
R / W Performance :arrow_up:
High Throughput Applications
HA :red_cross:
RAID 1
Mirroring Only
HA :check:
Read Performance :arrow_up:
Nested
RAID
RAID 10
Striped Mirror
RAID 01
Mirrored Stripe
RAID 3
Striping + 1 Parity Disk
For large sequential access
Backup
Video Streaming
Falt Tolerance (1 Disk)
RAID 4
Same as RAID 3
Single Disk Read / Write :check:
Good Reads
Reasonable Writes
RAID 5
RAID 3 + Distributed Parity
Good random reads
Messaging, Data mining
RAID 6
RAID 5 + 2nd Parity Element
Survive 2 Disk Fails
R/W Slow than RAID 5
Techniques
Striping
Parallel R/W
Increased performance
Stripe = n* strips
Mirroring
Data Protection / Redundancy
Not suitable for Backups
Parallel Reads
Slower Write Performance
Parity
Data Protection
Bit-wise XOR
Time consuming
Write Panelty
2
RAID 1
Nested RAID
4
RAID 3
RAID 4
RAID 5
6
RAID 6
Types
Software
Implemented at OS Level
Uses host CPU
Affects System Performance
Does not support all RAID levels
Limited Compatibility (OS Versions)
Hardware
RAID Controller
Managing & Controlling Disk Aggregations
I/O Requests :left_right_arrow: logical & physical Disks
Data regeneration