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Understanding and utilizing snapshot technology from qnap

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Understanding and utilizing snapshot technology from qnap

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Understanding and utilizing snapshot technology from qnap

  1. 1. Understanding and Utilizing Snapshot Technology from QNAP Omar Garcia
  2. 2. Agenda • What is Snapshot? • Snapshot on QNAP NAS • Snapshot Replica • Snapshot Vault
  3. 3. What is Snapshot? • A snapshot is a way to label a set of data as it existed at a point in time – Unexpected error occurs on current system • Revert it to the previous state that the snapshot has recorded
  4. 4. Misunderstanding • Snapshot is not backup • A snapshot depends on the original data set to exist and to function – System corrupted -> Data loss • A backup is an independent copy of your data
  5. 5. Snapshot on QNAP NAS • Whole Volume/LUN Snapshot • Copy-on-Write (COW) • Snapshot Clone • Snapshot Replica • Snapshot Vault
  6. 6. Snapshot Trends BTRFS Snapshot QNAP Snapshot BTRFS File System EXT4 File System RAID5/6 Testing Supports all RAID Sequential read speed unstable Stable read and write speed Might need change the file system to use Snapshot Easy upgrade path to use Snapshot Might need to purchase new hardware Supports Snapshots on current hardware https://www.phoronix.com/scan.php?page=news_item&px=CoreOS-Btrfs-To-EXT4-OverlayFS
  7. 7. Whole Volume/LUN Snapshot • Whole Volume/LUN Snapshot Technology - Copy on Write for really rapid recording & restoration - True Application Awareness Snapshot technology, including open files - Dramatically improves RPO/RTO (Recovery Point/Time Objective) - Block-level Snapshots reduce overall backup storage requirements *Currently supports 1024 snapshots in the whole device, 256 snapshots per Volume/LUN *Need at least 4GB RAM to support QNAP Snapshot *Currently supports devices: TS-x51+*, TS-x53A, TVS-x63, TVS-x71, TS-x79, TS-x80, TVS-ECx80 series *: x51+ series models only support up to 256 snapshots instead of 1024. The HS-251+ does not support snapsho
  8. 8. Block-Level Snapshot • Block-level Snapshot hugely increases RPO (Recovery Point Objective) and RTO (Recovery Time Objective) A B C Block Level File Level Modified Data C1 C1 Full duplication requires massive archive space An “only modified data” back up both reduces storage requirements A B C A B Snapshot1 Snapshot2
  9. 9. Easy to Use Interface • Enhanced interface reflecting hierarchical management and greatly simplifying Snapshot management
  10. 10. Easy to Use Interface • Access Snapshot Manager from any web browser to restore or arrange a Snapshot schedule
  11. 11. Snapshot Clone • Immediately accessible rapidly generated clones - Create backups with zero operational interference - Supports for both Volume and LUN Cloning - Create temporary clones for previewing
  12. 12. Demo
  13. 13. Rsync/RTRR Supporting Live File Backup. *System will not auto save any file that are still under writing. Volume Snapshot Volume Rsync / RTRR • True application consistency awareness - Rsync/RTRR automatically detects a NAS with Snapshot support - Create a Snapshot before backing up a volume - In-use files included in the backup process - Fully supported off-site Snapshot backup
  14. 14. Snapshot Vault Preserve Multiple NAS Snapshots • Directly restore a Snapshot on your remote NAS, or view and copy the Snapshot data - Preserve multiple Snapshots at the same time - Restore the Snapshot directly in the remote site - Use Rsync/RTRR or File Station to view or copy files Snapshot Vault Snapshot Volume1 Volume1 Snapshot Volume1 Snapshot
  15. 15. Extremely Efficient Remote Snapshot Replication • Only transfer the changed data to your remote device - Set up Snapshot Replica jobs in Backup Station - Block Level Snapshot significantly reduces network bandwidth usage - Native support for whole volume and block-level iSCSI LUN - Schedule controlled Snapshotting Volume/LUN Snapshots Snapshot Vault Snapshot Snapshot ReplicaSnapshot
  16. 16. Snapshot Agents for Windows/VMware • Windows Server Snapshot agent enhances communication between NAS, Windows Server and VMware vSphere enabling: - True “Application-Consistent” Snapshots - True “File-System Consistent” Snapshots - True “Crash-Consistent” Snapshots
  17. 17. Snapshot Agents for Windows/VMware
  18. 18. Thank you!

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