Dell PowerVault MD1000 SAS Solution Manual - Halaman 32
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A REFERENCE GUIDE FOR OPTIMIZING DELL™ MD1000 SAS SOLUTIONS
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)
98/2
Table 17: Streaming Media RAID Guidelines
Application
Streaming
Media
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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I/O Profile
(Sequential/Random)
Sequential
RAID Level
Concatenated
0
Recommended
I/O
Latency
Bandwidth
Size
Sensitivity
Heavy
>64k
High
1
10
Not Recommended
VER A00
Growt
Criticality
h Rate
High
Varies
5
50
Possible
5/06/2005