Dell PowerVault 221S (SCSI) - Manual (Page 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
Email
* 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