Adaptec GDTSETUP Uživatelský manuál stáhnout pdf (Strana 63)

Before we go through these examples step by step, we would like to explain a few terms

and relations important for the basic understanding of the ICP Controller firmware. At the

end of example 4, we will try to answer the three questions above.

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We refer to firmware as the operating system which controls the ICP Controller with all its

functions and capabilities. The firmware exclusively runs on the ICP Controller and is

stored in the Flash-RAM on the ICP Controller PCB. The controlling function is entirely in-

dependent of the PCI computer and the host operating system installed (for example

UNIX), and does not "drain" any computing power or time from the PCI computer. Accord-

ing to the performance requirements needed, the ICP Controllers are available with two

firmware variants. The firmware is either already installed on the controller upon delivery,

or can be added as an upgrade: RAIDYNE upgrade.



Standard Firmware

(installed on the GDT6

x8RD controllers).

In addition to simple controlling functions regarding SCSI hard disks or removable

hard disks, this version allows disk chaining (several drives can be linked in order

to form a single "large" drive), and the configuration of Array Drives of the types

data striping (RAID 0) and disk mirroring or duplexing (RAID 1).



RAIDYNE Firmware

(installed on the GDT6

x8RD controllers). In addition to disk

chaining, RAID 0 and RAID 1, RAIDYNE allows you to install and control Array

Drives of the types RAID 4 (data striping with dedicated parity drive), RAID 5 (data

striping with distributed parity) and RAID10 (a combination between RAID 0 and 1)

RAIDYNE is the name of the ICP disk-array operating system for the ICP Controllers. Unlike

pure software solutions, RAIDYNE is totally independent of the host operating system, and

can therefore be accessed under MS-DOS, Windows, OS/2, SCO-UNIX, Interactive UNIX,

Novell NetWare, etc.. Special RAID drivers are not needed. The integration of a RAID Disk

Array into the host operating system is carried out with the same drivers used for the inte-

gration of a single SCSI hard disk. All ICP Controllers are equipped with a hardware which

is particularly well suited for disk arrays. RAIDYNE uses this hardware with extreme effi-

ciency and therefore allows you to configure disk arrays that do not load the host computer

(whereas all software-based RAID solutions more or less reduce the overall performance of

the host computer.).

The basic concept of the RAIDYNE is strictly modular, and consequently, in

its functioning it appears to the user as a unit construction system.

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Adaptec GDTSETUP Uživatelský manuál Strana 63