A partition is a contiguous space of storage on a physical or logical disk that functions as though it were a physically separate disk. Partitions are visible to operating systems as storage entities/disks.
A GUID Partition Table (GPT) disk allows up to 128 primary partitions and for a much larger volume size, up to 9.4 Zettabytes.
Master Boot Record (MBR), and Extended Boot Records (EBR), are constrained by supporting four primary partitions and allowing volume size less than 2 TB. This constraint, inhibits their use in solutions that need more primary partitions or larger volume size.
See the GPT White Paper for more information and Intel® RAID Controller installation details.
This applies to: