Adaptec 39160 - SCSI Card Storage Controller U160 160 MBps Guía de usuario descargar pdf (Pagina 40)

A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02

PAGE 40 11/17/2005

• Table 6-1: Typical Storage Recommendation for Different Storage Applications

Application

Storage Recommendations

Servers Key Parameters RAID Level PV22xS Host Controller

Remarks

* Availability

* Performance

* Scalability

RAID10

Provides both

Availability and

performance

Cluster Topology

Scalable and

high availability

For added

performance

enable Write back

cache, if available

on PERC

Recommendation targets a

typical Enterprise Email

Server

Database

* Availability

* Performance

RAID10

Provides highest

availability of all

other RAID levels

Cluster Topology

Provides

availability of all

PV22xS

topologies

If added

performance is

required enable

Write back cache,

if available on

PERC

Performance requirements

for DB servers depend on

number of users

Web * Performance

RAID0 in Web

Server farms

Provides maximum

performance of all

RAID levels

Split Topology

Spanning RAID0

across channels

provides best

performance

PERC, with read

ahead capabilities

for added

performance boost

Web server farms, usually

have multiple servers

providing replicated web

data. Thus, data availability

is handled at server level

On-line

Transaction

* High

Availability

RAID10

Provides highest

availability of all

other RAID levels

Cluster Topology

Provides

availability of all

PV22xS

topologies

For added

performance

enable Write back

cache, if available

on PERC and data

protection at

PERC level

Recommendation targets

Enterprise applications

which require higher

availability than

performance.

In general for all OLT data

protection is of utmost

importance

File * Scalability

RAID5

Maximizing storage

with some data

protection

Joined Topology

Provides

maximum

scalability

PERC with Global

Hot Spare will

improve

availability for

RAID5

These servers usually have

data backed up periodically

and hence, require minimum

data protection from Storage

components

Streaming

Media

* Performance

RAID0

Provides maximum

performance of all

RAID levels

Split Topology

Spanning RAID0

across channels

provides best

performance

PERC, with read

ahead capabilities

for added

performance boost

Performance is of utmost

importance for Streaming

media servers. Data on

these servers is usually

backed up on external

medias such as Tape

libraries or optical medias -

CD/DVD

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