Rick Stevens wrote:
On Thu, 2007-08-09 at 15:26 -0500, Mike McCarty wrote:
Karl Larsen wrote:
[snip]
There are issues about how you partition a giant hard drive like
that. I forget just how many partitions your allowed but it is small
compared to the size. I guess your the IT expert and you have REAL
Experience to back your support for LVM.
Umm, AIUI the standard way of partitioning drives has no limit
on the number of extended partitions one may create.
Uhm, not exactly. You get up to four primary partitions, one of which
can be an extended partition. Inside that extended partition you can
have as many "logical" partitions as you wish.
That is indeed my understanding. What one gets is essentially
a linked list of Logical Volumes (correct terminology, but
in the present context confusing, so I avoided it). The Logical
Volumes have disc addresses which must be contained within
the range of disc addresses as that specified in the PT entry
corresponding to the extended partition. There is no essential
limit to the number of Logical Volumes, though there may be
only up to one extended partition. Floppy discs may have only one
Volume. Primary Partitions have up to one Volume per partition.
An Extended Partition has a number of Volumes which is limited
only by the space necessary to contain the BPB and overhead
per Volume. Otherwise, one may place as many Logical Volumes as
one wishes within the Extended Partition.
Mike
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