Data Recovery Glossary

Gigabyte to GUID

Data Recovery Glossary home

List of pages

A - Access Rights to ASCII

B - Backup to BTRFS

C - CANON_DC to Cross-linked Files

D - DAS to Dynamic Disk

E - ECC to External Hard Drive

F - Failed Disk to fsck

G - Gigabyte to GUID

H - Hard Drive to Hybrid Disk

I - IDE to Internal Drive

J - JBOD to Jumper

L - LBA to LVM

M - Megabyte to Motherboard

N - NAS to Nuke & Pave

O - Operator Error to Overwritten Data

P - Parallel ATA to PSU

Q - QNAP to Quota

R - RAID to Resident File

S - SAS to Synology Hybrid RAID

T - Tailpacking to TrueCrypt

U - UDMA to USB Thumbdrive

W - WD to Write-Through Cache

X - X-RAID2

Gigabyte, GB

Gigabyte - 1 Gigabyte (GB) equals 1,024 Megabytes (MB), which equals 1,048,576 Kilobytes (KB). 1 GB = 1,073,741,824 bytes.

G-List

G-List (Grown defect List) - a list of defective sector reassignments which stores sector reassignments made during the disk operation. S.M.A.R.T. Reallocated Sectors Count attribute shows the size of the G-List as its raw value. See also P-List.

GPT

GPT (GUID Partition Table) - a format of partition table as it is stored on a disk.

GPU

GPU (Graphics Processing Unit) - a special-purpose computer chip which renders graphics, mostly 3D.

Group descriptor

Group descriptor - a filesystem structure used in traditional UNIX filesystems (e.g. UFS, ext). Group descriptor contains information on each group of blocks (called cylinder group) which in turn contains an i-node table, a free space bitmap, and user data.

GUID

GUID (Globally Unique Identifier) - a unique 128-bit identifier. It is written as a string of 32 hexadecimal numbers divided into groups and surrounded with braces. Using GUIDs it is possible to get about 2128 unique values.

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