Toshiba Magnia 560S - Manual (Page 28)

RAID Controller Kit-G – Host-Based RAID Solution 10
Introduction to RAID
Table 2.1 Topics in this Chapter (Continued)
Major Topic Subtopic Turn to
Disk striping page 13
Disk mirroring page 14
Disk spanning page 15
Parity page 16
Hot spares page 16
Hot swap page 16
Disk rebuilds page 17
Logical drive states page 18
SCSI drive states page 18
Disk array types page 19
Enclosure management page 19
RAID Controller Kit-G – Host-Based RAID
Solution
RAID products are either:
•
Host-based, or
•
External
The RAID Controller Kit-G controller is a host-based RAID solution. RAID Controller
Kit-G is a PCI adapter card that is installed in any available PCI expansion slot in a host
system.
Host-Based
A host-based RAID product puts all of the RAID intelligence on an adapter card that is
installed in a network server. A host-based RAID product provides the best
performance. RAID Controller Kit-G is part of the file server, so it can transmit data
directly across the computer’s buses at data transfer speeds up to 532 MB/s.
The available sequential data transfer rate is determined by the following factors:
•
The sustained data transfer rate on the motherboard PCI bus
•
The sustained data transfer rate on the GC80302 PCI-to-PCI bridge
•
The sustained data transfer rate of the SCSI controller
•
The sustained data transfer rate of the SCSI devices
•
The number of SCSI channels
•
The number of SCSI disk drives
Host-based solutions must provide operating system-specific drivers.