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ECB-870
ECB-870 User’s Manual 15
3.6.2 Promise FastTrak100 UltraATA/100 IDE RAID Interface (ECB-870R Only)
The board integrates with Promise FastTrak100 UltraATA/100 IDE RAID interface that
provides RAID 0 and 1 functions. The function can enable or disable by jumper JRAID and
the RAID level can be set on BIOS. The channel 1 in BIOS stands for IDE3, and the
channel 2 in BOIS stands for IDE4.
The integrated RAID function will offer the better reliability and flexibility to the system
applications. It offers RAID 1 mirroring (for two drives) to protect data. If a drive that is part
of a mirrored array fails, the system will use the mirrored drive (which contains identical
data) to assume all data handing. When a new replacement drive is later installed, it
rebuilds data to the new drive from the mirrored drive to restore fault tolerance.
With striping, drives can read and write data in parallel to increase the performance of the
system. Mirroring increases read performance through load balancing and elevator seek
while creating a complete backup of your files. Striped array can double the sustained
data transfer rate of Ultra ATA/100 drives. It fully supports Ultra ATA/100 specification of
up to 100 MB/sec per drive. The RAID levels perform with different functions integrated on
the board is as below.
RAID 0 (Striping):
The data is striped or overlapped across multiple HDD. It offers the more space of “single
disk” but no fault-tolerance. In the other words, if you use two 40 GB hard drives in RAID 0,
it will be the 80 GB (40 + 40 GB) of hard drive space and set as a single disk, like disc C.
RAID 1 (Mirroring):
Stores the data within two hard drives at least at the same time. It offers the fault-
tolerance storage of the system. The space of storage will be half of the original space. If
performing 1-to-1 mirroring with two 40 GB drives, the system only sees one 40 GB drive.
If the onboard IDE controller is installed with hard disk, enable support in the Motherboard
Standard CMOS Setup for the drives. Note that the onboard IDE hard drives will then be
the bootable hard disk. If you want to boot from RAID IDE, it is necessary to set the Boot
sequence to “SCSI, A:, C:” since the RAID IDE is identified as a SCSI card
Note:
Before installing the device. Backup any necessary data. Failure to follow this
accepted PC practice could result in data loss.