User's Manual

l Requires as much parity information as standard RAID 5.
l Data is striped across all spans. RAID 50 is more expensive in terms of disk space.
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Related Information:
l Organizing Data Storage for Availability and Performance
l Comparing RAID Level and Concatenation Performance
l Controller-supported RAID Levels
l Number of Physical Disks per Virtual Disk
l Maximum Number of Virtual Disks per Controller
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RAID Level 60 (Striping over RAID 6 sets)
RAID 60 is striping over more than one span of physical disks that are configured as a RAID 6. For example, a RAID 6 disk group that is implemented with four
physical disks and then continues on with a disk group of four more physical disks would be a RAID 60.
Figure 3-7. RAID 60
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RAID 60 Characteristics:
l Groups n*s disks as one large virtual disk with a capacity of s*(n-2) disks, where s is the number of spans and n is the number of disks within each
span.
l Redundant information (parity) is alternately stored on all disks of each RAID 6 span.
l Better read performance, but slower write performance.
l Increased redundancy provides greater data protection than a RAID 50.
l Requires proportionally as much parity information as RAID 6.
l Two disks per span are required for parity. RAID 60 is more expensive in terms of disk space.

Related Information:
l Organizing Data Storage for Availability and Performance
l Comparing RAID Level and Concatenation Performance
l Controller-supported RAID Levels
l Number of Physical Disks per Virtual Disk
l Maximum Number of Virtual Disks per Controller

NOTE: On the PERC 4/SC, 4/DC, 4e/DC, 4/Di, 4e/Si, and 4e/Di controllers, there are special considerations when implementing RAID 50 on a disk group
that has disks of different sizes. For more information, see Considerations for RAID 10 and 50 on PERC 4/SC, 4/DC, 4e/DC, 4/Di, 4e/Si, and 4e/Di.