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Technology Background
Pegasus32 Product Manual
A RAID 6 on Pegasus R6 consists of four to six physical drives.
Recommended Applications for RAID 6:
•
Accounting and Financial
•
Database servers
•
Any application requiring very high availability
RAID 10 – Stripe
Stripe combines both of the RAID 1 and RAID 0 logical drive types. RAID
10 can increase performance by reading and writing data in parallel or striping, and duplicating the
data, or mirroring.
PROMISE implements RAID 10 by creating a data stripe over one pair of disk drives, then mirroring the
stripe over a second pair of disk drives. Some applications refer to this method as RAID 0+1.
PROMISE RAID 10 starts with a data stripe, then mirrors it
Advantages
Disadvantages
•
High Read data transaction rate
•
Medium Write data transaction rate
•
Good aggregate transfer rate
•
High disk overhead – equivalent of two
drives used for parity
•
Slightly lower performance than RAID 5
1. Data Stripe
2. Data Mirror
Disk Drives
Summary of Contents for Pegasus32 R4
Page 1: ...Pegasus32 R4 R6 R8 Product Manual Version 1 1 2020 Promise Technology Inc All Rights Reserved ...
Page 9: ...ix About this guide Pegasus32 Product Manual WARNING WARNING ...
Page 101: ...85 Managing the Pegasus32 Pegasus32 Product Manual Controller Settings ...
Page 201: ...185 Troubleshooting Pegasus32 Product Manual View NVRAM Events ...