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Chapter C - Quick-Setup

C. Quick-Setup

C.1 What is the Aim of Quick-Setup ?

In the previous chapter we have installed the GDT controller in a PCI computer and co n-

nected the SCSI devices. Now these SCSI devices must be prepared in order to run with

your operating system. This

Quick-Setup

chapter should help you to get started quickly.

Quick-Setup shows with

four examples

how a single SCSI hard disk, a Mirroring Disk Array

(RAID 1), a RAID 5 Disk Array and a RAID 5 Disk Array with a Hot-Fix drive are in stalled:

Example 1:

Installing a single SCSI hard disk.

Example 2:

Installing a Mirroring Disk Array (RAID 1), consisting of two

SCSI hard disks.

Example 3:

Installing of a RAID 5 Disk Array, consisting of five identical

SCSI hard disks.

Example 4:

Installing of a RAID 5 Disk Array, consisting of four identical

SCSI hard disks, and adding one Hot-Fix SCSI hard disk.

Examples 3 and 4 are not applicable to GDT611y and GDT612y controllers without the

RAIDYNE upgrade. Even if you cannot practically carry out all the examples yourself, we sug-

gest reading them all the same because they will give you a better under standing of how

the controllers of the GDT-series work. The following table tells you which examples are

applicable to your type of GDT controller.

Example 1 Example 2 Example 3 Example 4

GDT611y/GDT612y

Yes Yes No(*) No(*)

GDT651y

Yes Yes Yes Yes

GDT652y

Yes Yes Yes Yes

GDT653y

Yes Yes Yes Yes

GDT655y

Yes Yes Yes Yes

y=0

FAST SCSI RAID controller;

y=5

Wide SCSI RAID controller;

y=7

Wide & Ultra SCSI RAID controller

(*) Yes, whenRAIDYNE Upgrade installed.

With examples 3 and 4 we shall briefly repeat the installation of the controller and the SCSI

devices, in particular with regard to disk arrays.

Some essential issues having direct impact on the structure and configuration of a disk

array with RAIDYNE will be discussed, too:

1. How many physical SCSI hard disks are to be integrated in the disk array ?

2. Which redundancy level ought to be achieved ?

3. Should RAIDYNE automatically recover redundancy in the event of a disk

failure ? Or, in other terms: Are hot-fix drives needed ?

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Adaptec GDT651y Manuale Utente Pagina 63

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