Digital Equipment Corporation RAID Array 3000 storage subsystem Podręcznik Użytkownika Pobierz pdf (Strona 35)

Chapter 2. RAID Array Controller

EK–SMCPO–UG. A01 2–7

Figure 2–3 Controller Front Panel

2.4 Flexible RAID Set Configuration

In addition to its flexible hardware design, the controller’s firmware offers the

user the flexibility to configure RAID sets in several different ways:

•

RAID sets can comprise drives from any drive channel and SCSI ID.

•

A RAID set can contain all the drives connected to the controller, a single

drive, or any number of drives in between.

•

The controller supports RAID Levels 0, 1, 0+1, 4, and 5. It also supports

JBOD (Just a Bunch of Drives), allowing you to connect standalone disk

drives (such as a system disk) to the controller without making them mem-

bers of a RAID set.

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 93 94

RAID Array 3000 Storage 1
Subsystem 1
Contents 3
3 Maintenance 4
4 Expansion Pedestal Option 5
5 Second Controller Option 5
Figures (continued) 6
EK–SMCPO–UG. A01 vii 7
Revision Record 9
About This Guide 11
Associated Documents 12
Conventions 12
Conventions ( 13
Support and Services 13
Who to contact in Europe 14
Product Overview 15
1–2 EK–SMCPO–UG. A01 16
Chapter 1. Product Overview 17
1.2 Pedestal Features 18
1.3 Pedestal Cabinet 18
1.4 Pedestal Components 20
1.4.2 RAID Array Controller 20
EK–SMCPO–UG. A01 1–7 21
1–8 EK–SMCPO–UG. A01 22
1.4.6 UltraSCSI Buses 23
1–10 EK–SMCPO–UG. A01 24
1.5 Specifications 26
RAID Array Controller 29
2.2 Controller Features 30
EK–SMCPO–UG. A01 2–3 31
EK–SMCPO–UG. A01 2–5 33
2–6 EK–SMCPO–UG. A01 34
EK–SMCPO–UG. A01 2–7 35
2.5 Performance Enhancements 36
2.5.1 Custom Components 36
EK–SMCPO–UG. A01 2–9 37
2.6 RAID Levels Supported 38
2.6.1 RAID 0 39
2–12 EK–SMCPO–UG. A01 40
Figure 2–4 RAID 0 Write 40
2.6.2 RAID 1 41
2.6.3 RAID 0+1 41
2–14 EK–SMCPO–UG. A01 42
Table 2–5 RAID 0+1 Example 42
2.6.4 RAID 4 43
2.6.5 RAID 5 44
EK–SMCPO–UG. A01 2–17 45
2.6.6 JBOD 46
2.7 System Parameters 46
EK–SMCPO–UG. A01 2–19 47
Table 2–6 System Parameters 47
Parameter Description 47
2.8 Redundant Operation 48
2.8.1 Initialization 48
2.8.2 Message Passing 48
2.8.3 Failover 48
2.9 Environmental 49
2.9.2 Voltage Monitoring 50
EK–SMCPO–UG. A01 2–23 51
2.9.3 Temperature Monitoring 52
Maintenance 53
3.3 SBB Status LEDs 54
3.4 Controller LEDs 55
3.5 EMU Error Reporting 56
3.5.1 EMU Error Conditions 56
Chapter 3. Maintenance 57
EK–SMCPO–UG. A01 3–5 57
3.6.2 Replacing an SBB 58
EK–SMCPO–UG. A01 3–7 59
Figure 3–4 Replacing an SBB 59
3–8 EK–SMCPO–UG. A01 60
EK–SMCPO–UG. A01 3–9 61
3–10 EK–SMCPO–UG. A01 62
EK–SMCPO–UG. A01 3–11 63
3.6.14 Replacing the UPS 64
EK–SMCPO–UG. A01 3–13 65
3–14 EK–SMCPO–UG. A01 66
EK–SMCPO–UG. A01 3–15 67
3–16 EK–SMCPO–UG. A01 68
EK–SMCPO–UG. A01 3–17 69
3–18 EK–SMCPO–UG. A01 70
EK–SMCPO–UG. A01 3–19 71
3–20 EK–SMCPO–UG. A01 72
Expansion Pedestal Option 73
4–2 EK–SMCPO–UG. A01 74
EXPANSION PEDESTAL 75
4–4 EK–SMCPO–UG. A01 76
EK–SMCPO–UG. A01 4–5 77
4–6 EK–SMCPO–UG. A01 78
J16 (see Figure 4–7) 79
4–8 EK–SMCPO–UG. A01 80
Remove Knockout 81
4–10 EK–SMCPO–UG. A01 82
EK–SMCPO–UG. A01 4–11 83
4–12 EK–SMCPO–UG. A01 84
Figure 4–16 85
4–14 EK–SMCPO–UG. A01 86
Second Controller Option 87
5.2 Installation Procedure 88
EK–SMCPO–UG. A01 5–3 89
5–4 EK–SMCPO–UG. A01 90
EK–SMCPO–UG. A01 5–5 91
Reader’s Comments 93

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