Database Reference
In-Depth Information
Segment server RAID configurations
Each segment server in DCA has 12 disks that have two RAID groups of RAID 5
(5+1) attached. DCA maximizes the I/O performance by using the following RAID
controller policies:
• Disabled disk cache policy
• Write policy for write back
• Read policy for adaptive read ahead
The segment instances are equally spread across two file systems: /data1 and
/data2. The table below details the RAID configurations for the segment servers.
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