Drive Capacities - HP xw4000 Service & Reference Manual

4.5 Drive Capacities

The combination of the file system and the operating system used in the computer determines the
maximum usable size of a drive partition. A drive partition is the largest segment of a drive that
may be properly accessed by the operating system. A single hard drive may therefore be
subdivided into a number of unique drive partitions in order to make use of all of its space. The
table that follows identifies the capabilities and restrictions imposed on the computer by the
combinations of file and operating systems.
Microsoft to Drive Manufacturer Size Conversion Table*
Drive Size as Identified by
Microsoft Operating System
2 GB
4 GB
32 GB
64 GB
128 GB
2 TB
*Drive size calculations by drive manufacturers are bytes to the base 10
while calculations by Microsoft are bytes to the base 2.
File
System
FAT 16 ATA or SCSI
FAT 16 ATA or SCSI
FAT 32 ATA or SCSI
FAT 32 ATA
FAT 32 SCSI
FAT 32 ATA
FAT 32 SCSI
NTFS ATA
NTFS SCSI
*For Windows 98/SE with QFE see www.microsoft.com, search for Q263044 for
details on how to expand partition size.
Service Reference Guide
Drive/Partition Capacity Limits
Controller
Type Operating System
DOS/Windows 95
Windows NT
Windows 98/SE
Windows 98/SE with
QFE* and Windows ME
Windows 98/SE with
QFE* and Windows ME
Windows 2000/ XP
Windows 2000/ XP
Windows NT/2000/XP
Windows NT/2000/XP
Ultra ATA Drive Guidelines and Features
Drive Size as Identified by
Drive Manufacturers
2.1 GB
4.3 GB
34.4 GB
68.7 GB
137 GB
2.199 TB
Maximum Size
Partition
2 GB
4 GB
64 GB
128 GB
2 TB
32 GB
32 GB
128 GB
2TB
Drive
128 GB
128 GB
128 GB
128 GB
2 TB
128 GB
2 TB
128 GB
2TB
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