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IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
book

IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning

by Cathy Warrick, Craig Gordon, Benoit Granier, Keitaro Imai, Rosemary McCutchen, Brannen Proctor, Jim Sedgwick, Paulus Usong, Mary Ann Vandermark, John Wickes
December 2005
Intermediate to advanced content levelIntermediate to advanced
530 pages
18h 34m
English
IBM Redbooks
Content preview from IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
76 IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
To create the DS6000 logical volume, also known as a Logical Unit or LUN, extents from the
selected Extent Pool are concatenated to allocate the required LUN capacity. If an Extent
Pool is made up of several Ranks, a LUN can potentially have extents on different Ranks and
so be spread over those Ranks.
However, to be able to create very large logical volumes, you must consider having Extent
Pools that span more than one Rank.
Combining Extent Pools made up from one Rank and then utilizing an open systems
host-based Logical Volume Manager (LVM) to stripe a host Logical Volume ...
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ISBN: 0738494119Purchase book