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88 DS6000 Series: Concepts and Architecture
Figure 5-5 DS6800 switched disk expansion
When you add new DDMs into an enclosure or attach additional enclosures, you don’t need
disruptive maintenance. To add new DDMs into an existing enclosure, you have only to pull
out the dummy carriers and replace them with the new DDMs. To attach additional
enclosures, you only have to attach the new enclosures to the existing enclosures with Fibre
Channel cables.
1
16
FC switch
FC switch
1
16
FC switch
FC switch
16
1
FC switch
FC switch
16
1
FC switch
FC switch
Controller 0
16
1
FC switch
FC switch
1
16
FC switch
FC switch
Controller 1
L
o
o
p
1
L
o
o
p
0
First
expansion
enclosure
Server
enclosure
Raid controller
disk contrl ports
Raid controller
disk exp ports
Cables between
enclosures
Up to 16 DDMs
per enclosure
Third
expansion
enclosure
Fifth
expansion
enclosure
Second
expansion
enclosure
Fourth
expansion
enclosure
You can configure an
intermix configration
in a DS6800
73GB, 15k rpm
DDMs
145GB, 10k rpm
DDMs
300GB, 10k rpm
DDMs
EXP 1
EXP 5
EXP 3
- The IBM TotalStorage 1
- DS6000 Series: Concepts 1
- Contents ix 11
- LSS X'17' 100
- LSS X'18' 100
- DB2-test 100
- 4.2.7 Address groups 101
- 4.2.8 Volume access 101
- Host attachment 102
- Volume group 102
- 4.2.10 Placement of data 104
- Host LVM volume 105
- 5.1 DS6000 highlights 108
- 5.1.2 DS6000 Model 1750-EX1 109
- Loop 0) 111
- Loop 1) 111
- Controller 0 112
- Controller 1 112
- Copy Services 113
- 6.2 Copy Services functions 114
- Source Target 115
- 6.2.2 FlashCopy options 116
- Incremental FlashCopy 117
- Waiting write operation 119
- FlashCopy to 120
- PPRC Primary 120
- Persistent FlashCopy 121
- Global Copy (PPRC-XD) 122
- Server write 123
- Write to secondary 123
- (non-synchronously) 123
- Write acknowledge 123
- How Global Mirror works 124
- Global Mirror - How it works 125
- 127
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