Fujitsu ETERNUS DX60 Pengenalan Produk - Halaman 8

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Halaman Cetak
Fujitsu ETERNUS DX60 Pengenalan Produk

High Availability

High Availability
Duplicated components
Basic configuration contains
always two Power Supplies
The Controller Module can be
optionally duplicated
Components are hot
swappable
Hot expansion of disk drives
Hot firmware upgrade
supported
Product Introduction
ETERNUS DX60 and DX80
Advanced Data Protection
Advanced Data Protection
Data Block Guard
Data Block Guard function saves additional 8-byte check code to every
512-byte of data to ensure data integrity both on the disk and in the
cache
A0
A0
CC
Product Introduction
ETERNUS DX60 and DX80
Write
User data
A1
A2
A1
CC
A2
CC
CC: Check Code
Written data
CM#0
SCU
SCU
NAND
LSI
Flash
Monitor
PLD
Expander
PSU
EXP#0
Monitor
PLD
Expander
PSU
PSU: Power Supply Unit , SCU: System Capacitor Unit, RoC: RAID-on-Chip
14
Copyright Fujitsu Technology Solutions, Release June 2009
Read
(1)
(3)
Controller Module
Cache
ECC Protected
(2)
(2)
DISK
A0
CC
A1
CC
A2
CC
15
Copyright Fujitsu Technology Solutions, Release June 2009
Base System
Panel
RoC
Cache
Cache
Expander
BP
Expansion Shelf
Panel
Expander
BP
User data
A0
A1
A2
A0
CC
A1
CC
A2
CC
(1)
Apply Check Code
(2)
Verify Check Code
(3)
Delete Check Code
CM#1
SCU
RoC
NAND
LSI
Flash
Monitor
PLD
PSU
EXP#1
Monitor
PLD
PSU