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C122-B001-02EN
6-11
6.4 Redundancy of an HDD (Use of PRIMECLUSTER GDS)
6.4.1
Redundancy provided to system disk drives
PRIMEQUEST supports software mirroring of internal HDDs and system disks as an
option. To support this function, optional software is required. Linux supports
mirroring using PRIMECLUSTER Global Disk Services (GDS), which is provided as
an optional software product. For details, see the PRIMECLUSTER GDS manual.
Windows supports mirroring using external RAID or an ISV product.
Minimum configuration for HDD redundancy
shows the minimum configuration for HDD redundancy. In this
configuration, a redundant configuration of HDDs is implemented by connecting two
HDDs to one SCSI bus. Redundancy, however, is not applied to SCSI controllers, and
other I/O devices other than HDDs.
Figure 6.7 Minimum redundancy configuration
XAI
XAI
XDI
XDI
XDI
XDI
. . . .
Crossbar
SB#0
SB
SB MMB
#0
#1
#n
MMB
#1
LDX LDX LDX LDX
FLN
Memory
Memory
IOU#0
Manage-
ment
LAN
Manage-
ment
LAN
GbE SCSI
BMM#0
BMM#0
BMM#1
FLP#0
FLP#1
FLI
PXH#0
PXH#2
PXH#3
PXH#1
HDDx2
HDDx2
PCI card
PCI card
PCI card
PCI card
GbE SCSI
Private
LAN
Private
LAN
Mirror
Mirror
IOU#n
. . . .
Summary of Contents for PRIMEQUEST 440
Page 1: ...C122 B001 02EN Front Cover SYSTEM DESIGN GUIDE ...
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Page 16: ...viii C122 B001 02EN NOTE ON SAFETY Rear view Unit rear ...
Page 18: ...x C122 B001 02EN NOTE ON SAFETY PCI_Box Left side view Front view without cover ...
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Page 127: ...C122 B001 02EN 4 21 4 2 MMB Functions Figure 4 15 Console Redirection Switch screen ...
Page 178: ...5 34 C122 B001 02EN CHAPTER 5 Business LAN Management by GSWB ...
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Page 280: ...Back Cover ...