Compaq StorageWorks 4000 - RAID Array Betriebsanweisung PDF herunterladen (Seite 152)

Hard Drive Arrays

Drive mirroring, also called RAID 1, is the highest performance fault-

tolerance method. RAID 1 is the only option offering fault-tolerance

protection if only two drives are installed or selected for an array. Drive

mirroring creates fault tolerance by storing two sets of duplicate data on a pair

of disk drives. Therefore, RAID 1 is the most expensive fault tolerance method

because 50 percent of the drive capacity is used to store the redundant data.

RAID 1 always requires an even number of drives. To improve performance in

configurations with more than two drives, the data is striped across the drives.

If a drive fails, the mirror drive provides a backup copy of the files and normal

system operations are not interrupted. The mirroring feature requires a

minimum of two drives and, in a multiple drive configuration (four or more

drives), mirroring can withstand multiple simultaneous drive failures as long

as the failed drives are not mirrored to each other.

DATA

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DATA

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WAR2-051.AI, 9-1.EPS

Figure E-7. Drive mirroring stores an identical copy of the data

RAID 0 provides no fault tolerance. This level of RAID stripes data across all

the drives of the array, but it does not incorporate a method to create redundant

data. Therefore, if you choose this RAID option for any of your logical drives,

you will experience data loss for that logical drive if one physical drive fails.

However, because none of the capacity of the logical drives is used for

redundant data, RAID 0 offers the best processing speed and capacity. For this

reason, you may consider assigning RAID 0 to drives that require large

capacity and high speed but do not contain critical data.

Before choosing the RAID 0 option, consider the following:

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Electrolux EOU5330W User Manual (40 pages)

Brand: Electrolux | Category: Kitchen & houseware accessories | Size: 0.55 MB |

English

Table of contents

Model EOU 5330

1

IMPORTANT SAFETY INFORMATION

2

CONTENTS

3

DESCRIPTION OF THE APPLIANCE

4

The Control Panel

5

CONTROL PANEL INDICATOR NEON

6

BEFORE USING THE APPLIANCE

7

COOKWARE

8

GRILL AND OVEN FURNITURE

8

THE ELECTRONIC TIMER

9

THE TIMER

9

TO CANCEL THE COUNTDOWN

10

AND OFF AUTOMATICALLY

10

6. THINGS TO NOTE

12

7. AUTOMATIC COOKING

12

THE DUAL GRILL

13

THE GRILL PAN AND HANDLE

14

GRILLING CHART

16

THE MAIN OVEN

17

TO FIT THE MAIN OVEN SHELVES

18

MAIN OVEN COOKING CHART

19

ROASTING CHART

20

USES OF DEFROST FEATURE

21

HOW TO DEFROST

21

HINTS AND TIPS

21

CARE AND CLEANING

22

CLEANING THE OUTER AND INNER

24

DOOR GLASS PANELS

24

TO REMOVE THE OUTER GLASS

24

TO CLEAN THE INNER GLASS DOOR

25

REPLACING AN OVEN LIGHT BULB

25

SOMETHING NOT WORKING

26

SERVICE AND SPARE PARTS

28

CUSTOMER CARE DEPARTMENT

28

Exclusions

29

European Guarantee

29

TECHNICAL DETAILS

30

WARNINGS:

31

THINGS TO NOTE

32

INSTALLATION INSTRUCTIONS

34

TO REMOVE COVER OF MAINS

35

TERMINAL

35

CONNECTING TO A HOB OR COOKER

37

CABINETS

38

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