A company uses an iSCSI storage area network (SAN). A 6-terabyte logical unit number
(LUN) is presented to a Windows Server 2008 R2 Datacenter host server. You open Disk
Management on the host server and find that the LUN contains only a fully allocated 2-
terabyte partition. You need to configure the environment to ensure that the partition can be
extended to 6 terabytes. What should you do?
A.
Change the disk to a Master Boot Record (MBR) disk.
B.
Change the disk to a dynamic disk.
C.
Change the disk to a GUID Partitioning Table (GPT) disk.
D.
Create a disk mirror.
Explanation:
MBR max out at 2Tb GPT disk starts at 2Tb to 9.4 zettabytes
GUID Partition Table In computer hardware, GUID Partition Table (GPT) is a standard for
the layout of the partition table on a physical hard disk. It forms a part of the Extensible
Firmware Interface (EFI) standard, which is Intel’s proposed replacement for the PC BIOS. It
is also used on some BIOS systems because of the limitations of MBR partition tables. GPT
allows for a maximum disk and partition size of 9.4 zettabytes (9.4 × 1021 bytes[1]). As of
2010, most current operating systems support GPT, although some operating systems
(including Mac OS X and Windows) require systems with EFI hardware to support booting
from GPT partitions.
Diagram illustrating the layout of the GUID Partition Table scheme. In this example, each
logical block (LBA) is 512 bytes in size, and each partition entry is 128 bytes. LBA addresses
that are negative indicate position from the end of the volume, with 1 as the last addressable
block. http://en.wikipedia.org/wiki/GUID_Partition_Table
