User manual

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Each layer is designed to cover an aspect of the storage system, and all four layers
combined can achieve total protection for your storage system.
This architecture supports four distinct types of volumes adapted by QNAP over the years,
and each volume type supports different storage features:
Features
Legacy
volume
Static
Volume
QTS 4.1 Storage
Pool Flexible
Volume
QTS 4.2 Storage
Pool Flexible Volume
Performance level
High
High
Medium
Medium
Online RAID
migration
●
●
●
●
Online RAID
expansion
●
●
●
●
File-based LUN
●
●
●
●
Block-based LUN
●
●
Thin provision
●
●
SSD cache
●
●
●
JBOD RAID
expansion
●
●
●
JBOD expansion
roaming
●
●
●
Snapshot
●
Snapshot Replica
●
Snapshot Vault
●