Adaptec SAS/SATA/SCSI RAID Controllers Network Card User Manual


 
Chapter 3: About Your RAID Controller 16
Standard RAID Controller Features
Flash ROM for updates to controller firmware, BIOS, and the Adaptec 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
(Adaptec Storage Manager), a BIOS-based utility, a command line utility, and a DOS
utility. See Managing Your Storage Space on page 55 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
(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 Adaptec Storage Manager User’s Guide for Internal RAID
Storage
or online Help.
Support for RAID 0, RAID 1, RAID 5, RAID 10, RAID 50
1
, 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
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.
Dual Drive Failure Protection (RAID 6)—A RAID 6 array is similar to a RAID 5 array
except that it includes two independent sets of parity data instead of one.
1
The Adaptec 2420SA RAID controller supports RAID 0, 1, 10, 5, 50, simple, and spanned volumes.