Cloud vs. Virtual Machine Data Recovery

Cloud Virtual Machine is released, virtual machine snapshot deleted, Alibaba Cloud disk file deleted by mistake, enterprise WeChat chat history lost-cloud data is not "manufacturer responsible" everything is fine. We help you to use all the recovery channels available in the cloud platform.

Three myths about cloud data Manual for Actual Measurement of Recovery Channels of Each Platform (How do we handle cloud data incidents?real case price reference FAQ

Three mistakes about cloud data, all of which make people lose data

Myth 1:"If you go to the cloud, you won't lose data.". The SLA of cloud vendors guarantees "service availability", not "your data will not be deleted by yourself". A console error (deleting snapshots, releasing instances, emptying object storage), the vendor is not responsible for recovery. In 2026, many major downtime events of cloud service providers around the world also remind us that the cloud platform itself will have an accident.
Myth 2:"If the recycling bin is deleted, look for the manufacturer". The cloud disk recycling bin has a retention period (generally 10-30 days), expired automatic physical removal, manufacturers cannot save. But within the retention period you can save yourself, many people do not know where the entrance is.
Myth 3:"Virtual machine snapshots are foolproof". Snapshots will be invalidated if the snapshot chain breaks (an error occurs when deleting intermediate snapshots), the snapshot storage pool is damaged, and the host hardware fails. Snapshots are insurance, not universal insurance. Critical businesses still need independent backup.

Manual for actual measurement of recovery channel of each platform (save yourself first if you can)

We have sorted out the official recovery channels of mainstream platforms. In many cases, you can save them by yourself:

Aliyunpan: Recycle Bin keeps for 10 days (longer membership); File Recovery function can recover partially overwritten versions. There is no official channel for expired files, but if files have been synchronized on multiple devices, there are often remnants in the synchronization cache directory (.alicloud) of the local device.
Baidu network disk: Recycle Bin 10 days; Hidden space checked separately; Historical version feature works for document classes.
Tencent Cloud COS/Alibaba Cloud OSS: Buckets with version control enabled can be rolled back to any version; if not enabled, delete marker can be removed to restore; if life cycle rules are mismatched, check the rules before operating.
Cloud Virtual Machine ECS/CVM: Check snapshot chain before instance release; system disk snapshot can create new disk mount rescue;"released instance" supports work order recovery within 7 days in some areas (to submit immediately, expired physical removal).
Corporate WeChat/WeChat: Chat records are not retained in the cloud (Tencent official clear), recovery can only rely on local: mobile phone local database (professional tools + success rate to see coverage), computer backup, migration records.So the habit of "backing up important chats to your computer regularly" is worth a fortune.
nail/fly book documentation: Document history version can be rolled back more than 30 days; enterprise version can find administrator to check audit log recovery deleted sharing.
VMware/Hyper-V/PVE Native Virtualization: Virtual machine disk files (vmdk/vhdx/qcow2) damaged can be extracted by bottom analysis; snapshot delta chain fracture can manually rebuild chain relationship; we have mature tool chain for this type, and the recovery rate is higher than ordinary files.

How do we handle cloud data incidents?

Stop Loss Step 1: Stop all write operations (don't refresh and retry deletion and recovery repeatedly, don't continue to transfer new files to the cloud disk to occupy space). Cloud resource accidents,Time is success rate.- The countdown to the retention period is ticking.
channel inventory: Official recycle bin/version/snapshot/work order channel item by item inspection, can go official first go official (free and lossless).
Local Residual Excavation: Sync disk cache, browser cache, mobile phone local library, old device remnants — cloud deleted, local copy is often still there.
Virtual Disk Bottom Layer Recovery: vmdk/vhdx/qcow2 Corrupted, the underlying parsing file system extracts data after mirroring.
Vendor Work Order Assistance: If you need the intervention of the manufacturer (such as the released instance recovery), we will help you write the ticket with clear technical details, and the pass rate is much higher than that of the ordinary user description.
Reconstruct the backup system: After rescue, with "cloud + local" double backup, avoid gambling luck next time.

⚠️ Two "immediate" cloud data incidents:If you find any mistakes, immediately take screenshots to retain evidence (recycle bin status, operation time) and immediately stop all writing on the platform. In addition, be wary of online paid advertisements for "professional recovery of cloud data"-Baidu network disk/Alibaba cloud disk data is in the manufacturer's server room. Anyone who claims to "remotely help you recover overdue cloud disk files" is a liar.

real case

This is how we help our clients solve problems.

Company Alibaba Cloud ECS was released by interns, rescued within a single window in 7 days

In May 2026, interns from an e-commerce company in Panyu mistakenly released ECS instances of production environment (running order database) while cleaning resources. It was 5 hours after discovery, and the whole company was fried. After we took over: ① Submit Alibaba Cloud work order application instance data immediately to retrieve (This area supports recovery of the bottom layer within a certain period after release, and emergency channels are required);② At the same time, it is found that there was an automatic snapshot (configured in the retention policy) three days ago for this instance. First, a new disk was created and mounted, and the data of three days ago was recovered;③ 48 hours after the work order, the manufacturer recovered the bottom layer data of the disk at the time of release, and merged and recovered the incremental orders of the remaining three days. The final data loss is basically zero. The customer then turned on the "release protection" switch on all production instances (a console setting that many people don't know) and signed up for our standard file maintenance.

PVE virtual machine snapshot chain fracture, qcow2 bottom analysis to save the design file

August 2026, self-built server of a design studio in Nansha (Proxmox VE) Error deleting old snapshot, snapshot chain of a Windows virtual machine broke and failed to start, containing project files in progress (No backup, bloody lessons). Processing: mirror the underlying storage → analyze the backing chain relationship of qcow2 → find that the base disk is intact and the metadata of one of the two deltas is damaged → manually rebuild the chain reference + parse the valid cluster from the damaged delta → extract the NTFS file system in the virtual disk → export the project file completely and deliver it to the new NAS in the studio. At the same time, I helped them re-plan the PVE backup plan (daily proxim-backup-server increment to independent machine). The recovery cost is RMB 4500, which is much less than the cost of losing the project and redoing it.

price reference

Test first, quote later, repair later

Item	Reference Price	Notes
Cloud disk error deletion recovery guide	Free – RMB 200	Self-rescue guidance during retention period; extended assessment of residues
Object Store Version Rollback	RMB 300–800	COS/OSS/BOS Configuration and Recovery
Cloud Virtual Machine Instance Recovery Assistance	RMB 800–2000	Including emergency work order technical assistance
Virtual Machine Disk Repair (vmdk/vhdx/qcow 2)	RMB 1500–6000	By Degree of Damage and Disk Size
WeChat/Qiwei local record rescue	RMB 500–2000	Assessment by equipment and coverage
Cloud + local backup system construction	RMB 800	Including scheme + configuration + drill

* The above is the reference price, the specific price after inspection/survey shall prevail; batch/enterprise customers can negotiate discounts. Final pricing is subject to the actual on-site inspection.

FAQ

About cloud and virtual machine data recovery, people often ask

Cloud disk files beyond the recycle bin retention period can also be restored?

The official channel is gone. The only possibility is local residue: synchronized computer cache directory, mobile phone local copy, browser download record. Whether there is rescue depends on your use trace, send us account situation (no password) to help you evaluate. Third parties claiming to be able to "restore overdue files in the background" are all frauds.

Can WeChat chat records be deleted and restored?

To be honest: Tencent servers do not save chat content, and "recovery" can only rely on local database remnants. If the phone is not rooted/backed up, the success rate depends on the intensity of use after deletion (the more used, the more severe). We have professional tools to analyze the local database, and we will truthfully inform you after evaluating how much can be saved. We do not promise "100%". Daily prevention: important chats are saved to the computer regularly with "migration and backup".

Cloud Virtual Machine data lost manufacturers do not compensate?

Liability: The SLA has compensation clauses for data damage caused by vendor infrastructure failure (usually multiple of the service fee, not the value of the data); your own human error (deletion/release/reconfiguration) is not covered by compensation. This is why "you have to backup yourself when you go to the cloud"-the responsibility for backup is always on the data owner.

Can you log in to my cloud account?

Yes, there are two ways: you stare at our operation on the spot (recommended), or open RAM sub-account for us (only authorized with necessary permissions, disabled immediately after operation). All operations are recorded, and we do not touch data unrelated to recovery. Enterprise customers can sign confidentiality agreements.