A REFERENCE GUIDE FOR OPTIMIZING DELL™ MD1000 SAS SOLUTIONS VER A00
PAGE 32 5/06/2005
Recommended:
• RAID 5 – Recommended for file servers that require maximum storage capacity and
moderate data protection and performance.
• RAID 50 – Recommended for those solutions that require a balance between storage
capacity and performance.
Possible:
• RAID 1 – Possible solution for situations which do not require high storage capacity.
• RAID 10 – Possible solution for situations that require greater availability and redundancy
but not as much disk capacity.
• RAID 0 – While this solution is not redundant, RAID 0 may be useful for file servers that
require better performance and maximum storage capacity, for example, where backups
are expected to maintain data in the event of a failure.
• Concatenated – This solution could be used for situations that require maximum scalability
as physical disks could be added as storage needs grow. For file servers that can afford
some downtime and rely on backups to restore data, this could be a solution.
Streaming Media Servers
Streaming media servers are systems that provide web-casting, video conferencing, internet
entertainment (e.g. Internet TV or Internet radio), and multimedia services. These systems
generally require a balance between storage capacity, availability, redundancy, and performance.
Like web servers, they may also be part of a group of systems that work together to provide
content.
Table 16: Streaming Media IO profile
I/O Profile
(Read/Write)
I/O Profile
(Sequential/Random)
Bandwidth
I/O
Size
Latency
Sensitivity
Growt
h Rate
Criticality
98/2 Sequential Heavy >64k High High Varies
Table 17: Streaming Media RAID Guidelines
RAID Level
Application
Concatenated 0 1 10 5 50
Streaming
Media
Recommended Not Recommended Possible
Recommended:
• RAID 5 – Recommended for streaming media servers that require maximum storage
capacity and moderate protection and performance. This is the recommended RAID
configuration for stand alone streaming media servers.
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