![background image](http://html1.mh-extra.com/html/ibm/xiv-gen3-series/xiv-gen3-series_planning-manual_4145274039.webp)
Note:
The modem is no longer supported as part of the rack configuration for
Indonesia and Brazil. For more information, contact your IBM planning
representative.
Capacity
Each data module and interface module contains twelve 1 TB limited capacity, 2
TB, 3 TB, 4 TB, or 6 TB disk drive modules (DDMs).
You can only order an XIV system with DDMs of the same capacity, either 1 TB
hard drive size, 2 TB, 3 TB, 4 TB, or 6 TB. You cannot order an XIV system with a
mix of DDM capacities.
Note:
Only the 4 TB and 6 TB DDM options are available for model 281x-314.
For data and interface modules with 1 TB limited-capacity, the modules contain
2 TB DDMs, but the usable capacity is limited to 1 TB by using the short-stroking
method. By short stroking the DDM, only the outer sectors of the disk platters are
used to store data. Head repositioning delays are minimized, which results in
shorter access times and increased I/O performance.
The following tables list the total capacity and usable capacity available in fully
populated and partially populated racks for each supported DDM capacity. The
usable capacity is the amount of space that can be used for data storage. The
remaining space is used for system activities, data redundancy, and spare capacity.
For usable capacity, the decimal is rounded down.
aaaa
aaaa
aa
aa
aaaa
aaaa
aa
aa
aaaa
aaaa
aaaa
aaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aa
aa
aa
aa
aaaa
aaaa
aaaa
aaaa
aaaa
aaaa
aa
aa
aaaa
aaaa
aa
aa
aaaa
aaaa
aaaa
aaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aa
aa
aa
aa
aaaa
aaaa
aaaa
aaaa
aaa
aaa
aaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
Front
Rear
xiv10651
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
Interface module 9
Interface module 8
Interface module 7
InfiniBand switch 2
InfiniBand switch 1
Maintenance module 1
Interface module 6
Interface module 5
Interface module 4
Data module 3
Data module 2
Data module 1
Modem
Uninterruptible power supply 3
Uninterruptible power supply 2
Uninterruptible power supply 1
Automatic transfer switch
Figure 4. Example of a minimally populated XIV system for model 281x-314
Chapter 4. Physical configuration and features
15
Summary of Contents for XIV Gen3 Series
Page 6: ...vi IBM XIV Gen3 281x 11x 281x 21x and 281x 314 Planning Guide...
Page 8: ...viii IBM XIV Gen3 281x 11x 281x 21x and 281x 314 Planning Guide...
Page 10: ...x IBM XIV Gen3 281x 11x 281x 21x and 281x 314 Planning Guide...
Page 16: ...xvi IBM XIV Gen3 281x 11x 281x 21x and 281x 314 Planning Guide...
Page 24: ...xxiv IBM XIV Gen3 281x 11x 281x 21x and 281x 314 Planning Guide...
Page 52: ...28 IBM XIV Gen3 281x 11x 281x 21x and 281x 314 Planning Guide...
Page 88: ...64 IBM XIV Gen3 281x 11x 281x 21x and 281x 314 Planning Guide...
Page 94: ...70 IBM XIV Gen3 281x 11x 281x 21x and 281x 314 Planning Guide...
Page 116: ...92 IBM XIV Gen3 281x 11x 281x 21x and 281x 314 Planning Guide...
Page 125: ......
Page 126: ...IBM Printed in USA SC27 5412 09...