Selecting The Right Raid Type For Your It Infrastructure - HP HPE MR Gen11 User Manual

Feature Feature 200 series 200 series
Read cache policy
Write cache policy —
I/O policy
Drive caching
Strip size selection
RAID technologies RAID technologies
Subtopics Subtopics

Selecting the right RAID type for your IT infrastructure

Selecting the right RAID type for your IT infrastructure
Mixed mode (RAID and JBOD) Mixed mode (RAID and JBOD)
Striping Striping
Mirroring Mirroring
Parity Parity
Spare drives Spare drives
Drive rebuild Drive rebuild
Foreign configuration import Foreign configuration import
Selecting the right RAID type for your IT infrastructure Selecting the right RAID type for your IT infrastructure
The RAID setting that you select is based upon the following:
The fault tolerance required
The write performance required
The amount of usable capacity that you need
Subtopics Subtopics
Selecting RAID for fault tolerance Selecting RAID for fault tolerance
Selecting RAID for write performance Selecting RAID for write performance
Selecting RAID for usable capacity Selecting RAID for usable capacity
Selecting RAID for the storage solution Selecting RAID for the storage solution
Selecting RAID for fault tolerance Selecting RAID for fault tolerance
If your IT environment requires a high level of fault tolerance, select a RAID level that is optimized for fault tolerance.
This chart shows the relationship between the RAID level fault tolerance and the size of the storage array. The chart includes RAID 0, 5, 50, 10, 6, and 60. It also
shows the percent reliability in increments between 1 and one billion and the storage array drive increments between 0 and 96.
This chart assumes that two parity groups are used for RAID 50 and RAID 60.
This chart shows that:
RAID 10 is 30,000 times more reliable than RAID 0.
The fault tolerance of RAID 5, 50, 6, and 60 decreases as the array size increases.
400 series 400 series
HPE MR Gen11 Controller User Guide 11