Quantum DXi4701 User’s Guide
411
Glossary
B
Blockpool
A pool of all unique data blocks that were captured during
the data deduplication cycle. When backup jobs occur, the data
deduplication engine searches for new data entering the
DXi4701 and uses a variable length compression type algorithm
to compare this to existing data in the blockpool. Unique blocks
are added to the blockpool and all known blocks are indexed.
The basic unit of computer memory which is large enough to
hold one character.
C
Compress
A process of removing fine-grained redundancy from data
prior to storing or transmitting it. The granularity may vary, but
generally compression deals with redundancy in grains of a few
bytes.
D
Data Deduplication
A process of removing coarse-grained
redundancy from data prior to storing or transmitting it. The
granularity may vary, but generally data deduplication deals
with redundancy in grains of several kilobytes. When you select
Enable Data Deduplication
for a NAS share or VTL partition,
data deduplication is running all of the time. Backup data is
Summary of Contents for DXi4701
Page 1: ...User s Guide Quantum DXi4701 with DXi 2 3 4 Software 6 68106 01 Rev C...
Page 126: ...Chapter 4 DXi4701 Configuration Wizards Support Wizard 100 Quantum DXi4701 User s Guide...
Page 138: ...Chapter 5 DXi4701 Home Page Current Activity Overview 112 Quantum DXi4701 User s Guide...
Page 384: ...Chapter 9 DXi4701 Configuration Contacts 358 Quantum DXi4701 User s Guide...
Page 418: ...Chapter 10 DXi4701 Utilities Reboot Shutdown 392 Quantum DXi4701 User s Guide...
Page 436: ...Appendix B Troubleshooting Common Problems and Solutions 410 Quantum DXi4701 User s Guide...