Dell Equallogic PS6010e User Manual

March 2013 Dell EqualLogic Configuration Guide v14.1 3-28
Table 9 RAID Level Characteristic Comparison Workload Requirement
Workload
Requirement
RAID 5 RAID 6 RAID 10 RAID 50
Capacity
Excellent
Good
Average
Good
Availability Poor Excellent Good Fair
Sequential reads
Excellent
Excellent
Excellent
Excellent
Sequential writes
Good
Good
Good
Good
Random reads
Excellent
Excellent
Excellent
Excellent
Random writes
Good
Fair
Excellent
Good
Performance impact
of drive failure or RAID
reconstruction
Longest Longest Shortest Medium
3.4 Supported RAID policy conversions
While a member remains online, you can convert it from one RAID policy to another only if the new
RAID policy provides the same or more space than the current policy.
The table below shows the supported RAID policy conversions. The first column lists RAID
configurations, and the second column lists supported RAID policy conversions for them.
Table 10 Supported RAID policy conversions
Current RAID policy
Supported conversion
RAID 10 All
RAID 50 RAID 5, RAID 6
RAID 5
None
RAID 6
None
RAID 6 Accelerated
None
If a RAID policy conversion is not supported, you can remove the member from the group and then
add it to the group again. You can then set the RAID policy.
Before changing a member's RAID policy, note the following:
• Single member groups: If you change the RAID policy in a single member group, all data on the
member will be lost.
• Multi-member groups: Before changing a group member's RAID policy, you must first vacate its
data to another member in the group, or all data on the member will be lost. When you vacate a
member, there must be sufficient available free space on another member to store the evacuated
data.

Dell Equallogic PS6010e Specifications

General

Brand	Dell
Model	Equallogic PS6010e
Category	Storage
Language	English