Users Guide

RAID Level Data Availability Read
Performance
Write
Performance
Rebuild
Performance
Minimum Disks
Required
Suggested
Uses
RAID 50 Good Very Good Fair Fair N + 2 (N = at
least 4)
Medium sized
transactional or
data intensive
uses.
RAID 6 Excellent Sequential reads:
good.
Transactional
reads: Very good
Fair, unless using
writeback cache
Poor N + 2 (N = at
least two disks)
Critical
information.
Databases and
other read
intensive
transactional
uses.
RAID 60 Excellent Very Good Fair Poor X x (N + 2) (N =
at least 2)
Critical
information.
Medium sized
transactional or
data intensive
uses.
N = Number of physical disks
X = Number of RAID sets
Supported controllers
Supported RAID controllers
The iDRAC interfaces support the following PERC10 controllers:
• PERC H740P Mini
• PERC H740P Adapter
• PERC H840 Adapter
The iDRAC interfaces support the following PERC9 controllers:
• PERC H330 Mini
• PERC H330 Adapter
• PERC H730P Mini
• PERC H730P Adapter
Supported non-RAID controllers
The iDRAC interface supports 12 Gbps SAS HBA external controller and HBA330 Mini or Adapter controllers.
Supported enclosures
iDRAC supports MD1400, and MD1420 enclosures.
NOTE:
Redundant Array of Inexpensive Disks (RBODS) that are connected to HBA controllers are not supported.
NOTE: For iDRAC version 3.00.00.00, daisy chain of enclosures is not supported for H840. Only one enclosure per port
is allowed.
Summary of supported features for storage
devices
The following table provides the features supported by the storage devices through iDRAC.
192
Managing storage devices