Dell PowerVault MD1000 SAS Solution Manual - Página 34
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A REFERENCE GUIDE FOR OPTIMIZING DELL™ MD1000 SAS SOLUTIONS
Performance
Web
Performance
On-line
High Availability
Transaction
Scalability
File
Streaming
Performance
Media
PAGE 34
both availability
provides capacity
and performance
scalability
RAID 0 in Web
Split Topology
Server farms
spanning RAID 0
provides maximum
across channels
performance of all
provides better
RAID levels
performance if
daisy-chaining for
additional capacity
is not required
RAID 10
Daisy-chaining
provides highest
provides capacity
availability of all
scalability
RAID levels
RAID 5
Daisy-chaining
maximizing
provides capacity
storage with some
scalability
data protection
RAID 0
Split Topology
provides maximum
spanning RAID 0
performance of all
across channels
RAID levels
provides better
performance if
daisy-chaining for
additional capacity
is not required
VER A00
performance enable
requirements for database
Write back cache
servers depend on
number of users
Enable read ahead
Web server farms, usually
capabilities for
have multiple servers
added performance
providing replicated web
boost
data. Thus, data
availability is handled at
server level
For added
Recommendation targets
performance enable
Enterprise applications
Write back cache
which require higher
availability than
performance.
In general for all OLTP,
data protection is of
utmost importance
Enable Global Hot
These servers usually
Spare for improved
have data backed up
availability for RAID
periodically and hence,
5
require minimum data
protection from storage
components
Enable read ahead
Performance is of utmost
capabilities for
importance for Streaming
added performance
servers. Data on these
boost
servers is usually backed
up on external media such
as tape libraries or optical
media - CD/DVD
5/06/2005