Datasheet

12
Local Snapshot and Remote
Snapshot Replica
Block-based snapshot technology
Snapshot Replica RTRR Rsync NAS to NAS
*Data backup scope
Volume/LUN Shared Folder Shared Folder Shared Folder
Transmission mode
Block-based File-Level File-based File-Level block-based File-Level block-based
Backup scheme
Transmit only modified blocks Transmit new files Transmit new files but only with modified blocks
Backup schedule
Scheduled Immediate/Scheduled Scheduled Scheduled
Encryption
Support Support Support Support
Compression
Support Support Support Support
Memory requirement
At least 4GB RAM Unlimited Unlimited Unlimited
Remote system
QNAP NAS QNAP NAS Rsync Server QNAP NAS
Application scenario
• A large number of files with
various file sizes
• Large files with frequent
modifications such as virtual
machine images or backup
images.
• Real-time file replication
• File synchronization
• Fast transmission on local
network
• Transmits large files with minor modifications
• Transmit to a remote site over the Internet
A B C
Block Level
Snapshot 1
Snapshot 2
Only modified data is backed up to
save space and increase efficiency.
File Level
A B C
A B C1
C1
Whole data backup (higher
space requirement and reduced
efficiency)
Snapshot requires a minimum of 4GB RAM.
Snapshot advantages
QNAP uses block-based snapshot technology to support up to 32 snapshots for each volume or LUN, up to 256 snapshots. Schedule snapshots
hourly, daily, weekly, monthly, or yearly to assist in saving space and reserve snapshots for future use. Additionally, Snapshot Agent ensures
data integrity on locked or open files while taking snapshots.