HP Dc5750 WebPAM User Manual - Page 101
Choosing a RAID Level, RAID 0
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Chapter 6: Technology Background Choosing a RAID Level There are several issues to consider when choosing the RAID Level for your logical drive. The following discussion summarizes some advantages, disadvantages and applications for each choice. RAID 0 Advantages Disadvantages Implements a striped disk logical drive, Not a true RAID because it is not fault- the data is broken down into blocks and tolerant each block is written to a separate disk The failure of just one drive will result in drive all data in an logical drive being lost I/O performance is greatly improved by Should not be used in mission critical spreading the I/O load across many environments channels and drives No parity calculation overhead is involved Recommended Applications for RAID 0 • Image Editing • Pre-Press Applications • Any application requiring high bandwidth RAID 1 Advantages Simplest RAID storage subsystem design Can increase read performance by processing data requests in parallel since the same data resides on two different drives Disadvantages Very high disk overhead - uses only 50% of total capacity Recommended Applications for RAID 1 • Accounting • Payroll • Financial • Any application requiring very high availability 95
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