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The main differences between basic and dynamic disks are: [8] [9] Dynamic disks support multi-partition volumes; basic disks do not. Windows stores basic disk partition information in the registry and dynamic disk partition information on the disk; Dynamic disks allow more flexible configuration without the need to restart the system.
Dynamic drive overlay (DDO, also referred to as: software translation driver) is a software technique to extend a system BIOS that does not support logical block addressing (LBA) to access drives larger than 504 MiB. The technology was continued with similar types of problems up to the LBA-48 extension.
A disk array controller is a device that manages the physical disk drives and presents them to the computer as logical units. It often implements hardware RAID , thus it is sometimes referred to as RAID controller .
Fixed hard disk image: a file that is allocated to the size of the virtual disk. Fixed VHDs consist of a raw disk image followed by a VHD footer (512 or formerly 511 bytes). [2] Dynamic hard disk image: a file that at any given time is as large as the actual data written to it, plus the size of the header and footer.
Logical Disk Manager, introduced with Windows 2000, allows for the creation of RAID 0, RAID 1, and RAID 5 volumes by using dynamic disks, but this was limited only to professional and server editions of Windows until the release of Windows 8. [58] [59] Windows XP can be modified to unlock support for RAID 0, 1, and 5. [60]
When a disk fails, erased data is rebuilt using all the operational disks in the array, the bandwidth of which is greater than that of the fewer disks of a conventional RAID group. Furthermore, if an additional disk fault occurs during a rebuild, the number of impacted tracks requiring repair is markedly less than the previous failure and less ...
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The larger LBA size supports larger disks. Some BIOSes support GPT partition tables as well as MBR partition tables, in order to support larger disks than MBR partition tables can support. GPT uses universally unique identifiers (UUIDs), which are also known as globally unique identifiers (GUIDs), to identify partitions and partition types.