Dell PowerVault 220S Handmatig - Pagina 40
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A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS
• Table 6-1: Typical Storage Recommendation for Different Storage Applications
Application
Servers
Key Parameters
* Availability
Email
* Performance
* Scalability
* Availability
Database
* Performance
Web
* Performance
On-line
* High
Transaction
Availability
File
* Scalability
Streaming
* Performance
Media
PAGE 40
Storage Recommendations
RAID Level
RAID10
Cluster Topology
Provides both
Scalable and
Availability and
high availability
performance
Cluster Topology
RAID10
Provides
Provides highest
availability of all
availability of all
PV22xS
other RAID levels
topologies
RAID0 in Web
Split Topology
Server farms
Spanning RAID0
Provides maximum
across channels
performance of all
provides best
RAID levels
performance
Cluster Topology
RAID10
Provides
Provides highest
availability of all
availability of all
PV22xS
other RAID levels
topologies
RAID5
Joined Topology
Maximizing storage
Provides
with some data
maximum
protection
scalability
Split Topology
RAID0
Spanning RAID0
Provides maximum
across channels
performance of all
provides best
RAID levels
performance
PV22xS
Host Controller
For added
performance
enable Write back
cache, if available
on PERC
If added
performance is
required enable
Write back cache,
if available on
PERC
PERC, with read
ahead capabilities
for added
performance boost
For added
performance
enable Write back
cache, if available
on PERC and data
protection at
PERC level
PERC with Global
Hot Spare will
improve
availability for
RAID5
PERC, with read
ahead capabilities
for added
performance boost
VER A02
Remarks
Recommendation targets a
typical Enterprise Email
Server
Performance requirements
for DB servers depend on
number of users
Web server farms, usually
have multiple servers
providing replicated web
data. Thus, data availability
is handled at server level
Recommendation targets
Enterprise applications
which require higher
availability than
performance.
In general for all OLT data
protection is of utmost
importance
These servers usually have
data backed up periodically
and hence, require minimum
data protection from Storage
components
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
11/17/2005