Promise Technology VTrack M-Class M200f Product Manual page 256

VTrak M-Class Product Manual
RAID 1E
Implemented as a mirrored disk array
whose segments are RAID 0 disk
arrays
High I/O rates are achieved thanks to
multiple stripe segments
Can use an odd number of disks
Recommended Applications for RAID 1E
• Imaging applications
• Database servers
• General fileserver
RAID 5
High Read data transaction rate
Medium Write data transaction rate
Good aggregate transfer rate
Recommended Applications for RAID 5
• File and Application servers
• WWW, E-mail, and News servers
RAID 10
Implemented as a mirrored disk array
whose segments are RAID 0 disk
arrays
High I/O rates are achieved thanks to
multiple stripe segments
Recommended Applications for RAID 10
• Imaging applications
• Database servers
• General fileserver
Advantages
Advantages
Advantages
Disadvantages
Very high disk overhead - uses only
50% of total capacity
Disadvantages
Disk failure has a medium impact on
throughput
• Intranet servers
• Most versatile RAID level
Disadvantages
Very high disk overhead - uses only
50% of total capacity
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