Dell PowerVault 221S (SCSI) - Manual (Page 5)

A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02
PAGE 5 11/17/2005
the server/storage solution and will determine what RAID configuration will be the most
optimal for the application. Table 2-2 outlines the recommended RAID solution based on
the usage of the server.
• Table 2-2: Application Vs RAID configurations
RAID Level Application
Concatenated 0 1 10 5 50
Email
Database
Web
On-line
transaction
File -
Archival
File - User
File stores
Streaming
Media
Recommended Not Recommended Possible
General RAID Configuration Guidelines
RAID 0
RAID 0 is generally not a recommended solution due to lack of redundancy and data
protection. However, it may be utilized in situations where these are not required and
maximum storage capacity and performances are essential.
RAID 1
A RAID 1 solution, while not ideal for most servers, could be utilized for small workgroup
servers or servers with low storage capacity and growth requirements. Any servers
beyond a small workgroup server are likely to need more storage and consequently, a
more efficient RAID solution.
RAID 10
RAID 10 has good I/O performance, excellent availability and redundancy. The biggest
drawback is the higher relative cost for significantly lower storage capacity. This RAID
configuration should be used in situations where the maximum availability, redundancy
and performance are the priority considerations.