Dell PowerVault MD1120 - Manual (Page 37)

A REFERENCE GUIDE FOR OPTIMIZING DELL™ POWERVAULT™ MD1XXX FAMILY SAS SOLUTION VER A02
PAGE 37 6/16/2008
Streaming Media Servers
Streaming media servers are systems that provide web-casting, video conferencing, Internet
entertainment (for example, 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 23: 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 24: Streaming Media RAID Guidelines
Application
RAID Level
Concatenated 0
1 10 5 50 6 60
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.
• RAID 50 – Recommended for those solutions that require a balance between storage
capacity and performance. This solution provides greater availability and redundancy but
less storage capacity.
• RAID 6 – Recommended for streaming media servers that require maximum storage
capacity, enhanced protection, and moderate performance.
• RAID 60 – Recommended for those solutions that require a balance between storage
capacity and performance with maximum data protection. This solution provides greater
availability and redundancy but less storage capacity.
• RAID 0 – While not redundant, this solution may be useful for streaming media servers
that require better performance and are members of a cluster of servers where availability
and redundancy are handled at a higher level.
Possible:
•
RAID 1, RAID 10 – Possible in situations which do not require high storage capacity. In
general servers utilized for streaming media require large amounts of storage capacity
for content, especially uncompressed video.