AMCC SIDECAR 3 Manual do Utilizador descarregar pdf (Página 13)

Putting the Pieces Together

Advanced 3ware RAID Features and Performance Architecture

StorSwitch

™

maximizes controller throughput — StorSwitch is a unique non-blocking switch

fabric architecture that allows 3ware controllers to concurrently communicate to all attached SATA

drives through a pool of 32 direct memory access (DMA) channels for unparalleled performance

and data availability. The result is superior overall system performance compared to non-scalable

hub-based systems that share the bandwidth of a single DMA channel.

StorSave optimizes data protection and performance — StorSaves’s revolutionary combination

of powerful reliability enhancements and a battery backup unit (BBU) maximize data protection

and system reliability without sacricing controller performance. StorSave permits 3ware controllers

to use both controller cache and disk cache during SATA RAID operations. This strengthens array

performance during optimal usage, as well as during degraded RAID 5 operations which means

faster rebuild times. StorSave Proles allow user-specied levels of protection vs. performance

(9650SE, 9590SE and 9550SXU only).

StreamFusion maximizes application performance under multiple loads — An intelligent

cache algorithm dynamically optimizes RAID 5 and RAID 6 disk accesses and eciently manages

data through controller cache for guaranteed bandwidth. As the number of data streams increases,

the total bandwidth is divided equally among them. Application performance will not suer

during heavy trac or when multiple applications are accessing data simultaneously. 3ware RAID

controllers are not the performance bottleneck, as is often the case with software RAID and

other hardware RAID controllers.

Hard

Drive

Hard

Drive

Hard

Drive

Hard

Drive

Up to

1.5 Gb/sec

per port

3ware SATA Hardware

RAID Controller

Advanced

StorSwitch

Architecture

• Protects drive and controller cached writes in the event of a power loss

• Uses controller and drive write cache in all modes

• Dual caching for faster rebuild times

Block 10

Block 7

Block 4

P1 Parity

Disk #1

Block 11

Block 8

P2 Parity

Q1 Parity

Disk #2

Block 12

P3 Parity

Q2 Parity

Block 1

Disk #3

Q4 Parity

Block 9

Block 6

Block 3

Disk #5

Striped Data with Distributed Double Parity —

RAID 6

Host Data

P4 Parity

Q3 Parity

Block 5

Block 2

Disk #4

RAID 0 “Striping”

ETC. . .

RAID 1 “Mirroring”

RAID 5 “Rotational Parity”

3 Parity

2 Parity

0 Parity

1 Parity

Drive 1

Drive 0

Drive 3Drive 2

Stripe

RAID 10 "Striped Mirror"

SATA Disk

Mirror

I/O

120

100

1 2 4 8 16

StreamFusion Performance

vs. Competition

StreamFusion assures scalable high performance

Iometer 2004.07.30dual Xeon 2.6 Ghz/1GB system/WinXP SP2/HDS7222525VLSA80/fw

V36OA60A/64KB stripes/RAID 5/all other settings at default

# Streams

AMCC

Competition 1

Competition 2

StreamFusion in Action

120

100

1 2 4 8 16

StreamFusion Performance vs. Competition

StreamFusion assures scalable high performance

Iometer 2004.07.30dual Xeon 2.6 Ghz/1GB system/WinXP SP2/HDS7222525VLSA80/fw

V36OA60A/64KB stripes/RAID 5/all other settings at default

# Streams

AMCC

Competition 1

Competition 2

StreamFusion in Action

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19

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