ZFS Storage Appliance - Understanding How the 'USED' Space is Calculated for Block Devices ( LUN's) When Used With Snapshots
(Doc ID 2595089.1)
Last updated on JANUARY 30, 2025
Applies to:
Sun ZFS Storage 7120 - Version All Versions to All Versions [Release All Releases]Sun Microsystems > Storage - Disk > Unified Storage
Sun Storage 7110 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Sun Storage 7210 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Sun Storage 7310 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.
Purpose
The USED Space Associated With a 'Thick' LUN Appears to Grow Over Time , While Using Snapshots, However the Sum of the Snapshot Sizes Do Not Account For this USED Space.
Scope
This Document is Meant To Help ZFSSA System Administrators Understand how ZFS Allocates Space when Snapshots Are In Use With Block Devices.
Details
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In this Document
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