如果你之前有開快照，你所謂檔案都回復到，就係打開快照apps睇邊個快照入面檔案無問題就回復1分鐘內應該回復成tb
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問AI ，佢話揀 Basic , 唔好揀 Raid 1 ,
To achieve the fastest system recovery with the smallest possible space overhead using mixed 4TB and 8TB hard drives on a 2-bay Synology DS225+, you should avoid traditional full-disk mirroring (RAID 1). RAID 1 across a 4TB and 8TB setup would trap you at 4TB of total storage, wasting 4TB of your 8TB drive. [1, 2]
Instead, follow the strategic architecture below to optimize your space and secure instant system recovery.
Step 1: Storage Pool Architecture (Max Storage Space)
Configure your drives as two independent storage pools using the Btrfs file system. This releases 12TB of total usable space (4TB + 8TB) instead of restricting you to 4TB. [3]
Volume 1 (4TB Drive): Where you install the main DSM operating system, primary applications, and active configurations.
Volume 2 (8TB Drive): Used exclusively for cold data storage, multimedia, large files, and your automated system snapshots.
(Note: Synology installs a tiny, mirror-like system partition across both drives automatically at the root hardware level for core OS booting. This is handled by DSM out-of-the-box, requires no configuration, and uses negligible space).
Step 2: The "Zero-Space" Recovery System Setup
To return to your exact system status instantly after a crash, malware attack, or hack without mirroring your massive media files, you must separate System Configuration and App Data from raw storage.
1. Turn on Automatic Configuration Backup (Uses Kilobytes)
This saves your users, groups, network setups, firewall rules, and permissions automatically. [4, 5]
Go to Control Panel > Update & Restore > Configuration Backup.
Enable Automatic Backup to your Synology Account.
Alternative: Click Back up configuration to export a tiny .dss file manually to your local computer. [4, 5, 6, 7]
2. Schedule App Snapshots via Hyper Backup (Uses Minimal Space)
Instead of copying the full volume, you will use Synology Hyper Backup to capture the system apps (Docker/Container Manager, Plex, Synology Photos) and their operational states. [3]
Open Hyper Backup on Volume 1.
Create a new task and choose Local Folder & USB (set the destination path to Volume 2 on your 8TB drive).
In the application list window, check the boxes for your applications (e.g., DSM settings, Drive, Photos, etc.). Uncheck large data folders.
Enable Version Rotation (Smart Recycle). This only saves block-level incremental changes, costing almost no extra space. [3, 8, 9, 10]
3. Protect Critical Files via Snapshot Replication (Near-Instant Recovery)
For your absolute most critical data folders (documents, app configurations), install Synology Snapshot Replication. [3, 11]
It uses pointer-based tracking. If a hacker encrypts your NAS with ransomware, you can click "Rollback" and return the entire system to its status 1 hour ago in less than 30 seconds.
It takes up virtually 0 bytes initially, only growing slightly as you modify files over time. [12]
