Chapter 3: About Your RAID Controller
●
16
Standard RAID Controller Features
●
Flash ROM for updates to controller firmware, BIOS, and the ICP RAID Configuration
utility
●
Disk drive hot-swapping
●
Event logging and broadcasting including email and SNMP messages
●
Multiple options for creating and managing RAID arrays—A full software application
(ICP Storage Manager), a BIOS-based utility, a command line utility, and a DOS utility.
See
Managing Your Storage Space
on page 60
for more information.
●
(SAS and SATA RAID controllers only)
Native command queuing (NCQ), which lets disk
drives arrange commands into the most efficient order for optimum performance
●
(
SATA and SCSI RAID controllers only
) Support for disk drive enclosures with SAF-TE
enclosure management hardware. Tagged Command Queuing (TCQ), which allows disk
drives to arrange commands into the most efficient order for optimum performance.
●
(
SAS RAID controllers only
) Support for disk drive enclosures with SES2 enclosure
management hardware
●
Some RAID controllers support adding a battery backup module (see
page 17
).
Array-level Features
Note:
For more information, refer to the ICP Storage Manager User’s Guide for Internal RAID
Storage
or online Help.
●
Support for RAID 0, RAID 1, RAID 5, RAID 10, RAID 50
*
, simple volumes, and spanned
volumes
●
Support for hot spares (global and dedicated)
●
Support for automatic failover, so arrays are automatically rebuilt when a failed disk drive is
replaced (applies to redundant arrays in SES2- or SAF-TE-enabled disk drive enclosures
only
)
●
Optimized disk utilization, which ensures that the full capacity of all disk drives can be
used, even if the disk drives vary in size
●
Online capacity expansion, so you can increase the capacity of an array without recreating it
●
Support for array migration from one RAID level to another
Advanced Data Protection Suite
●
Snapshots
—You can use this feature to move data from a hot spare back to its original
location after a disk drive failure.
●
Copyback Hot Spare
—You can use this feature to move data from a hot spare back to its
original location after a failed disk drive is replaced.
●
Striped Mirror (RAID 1E)
—A RAID 1 Enhanced array is similar to a RAID 1 array except
that data is both mirrored
and
striped, and more disk drives can be included.
●
Hot Space (RAID 5EE)
—A RAID 5EE array is similar to a RAID 5 array except that it
includes a distributed spare and must be built from a minimum of four disk drives.
*
The ICP9047MA RAID controller does not support RAID 50.