Raid - Promise Technology VTRAK E610f 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 6
High Read data transaction rate
Medium Write data transaction rate
Good aggregate transfer rate
Safest RAID level, except for RAID 60
Recommended Applications for RAID 6
• Accounting and Financial
• Database servers
• Any application requiring very high availability
Advantages
Advantages
Advantages
Chapter 7: Technology Background
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
High disk overhead – equivalent of two
drives used for parity
Slightly lower performance than RAID 5
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