Data Disaster Recovery charges for backup storage based on the total volume of data backed up each month. Choose a backup schedule specification that matches your estimated monthly backup volume to minimize costs.Backup storage costs support two billing methods: pay-as-you-go and subscription (upfront).
Subscription (upfront) billing
Charges are calculated using this formula:
Monthly charge = Base fee + (Actual data volume - Free quota) x Overage rate
If your actual data volume stays within the free quota, you pay only the base fee with no overage charges. If your actual data volume exceeds the free quota, the excess data is charged at the corresponding overage rate.
Pricing by specification
| Specification | Time to back up 100 GB | Free quota (GB/month) | Chinese mainland base fee (USD/month) | Chinese mainland overage rate (USD/GB) | China (Hong Kong) and regions outside China base fee (USD/month) | China (Hong Kong) and regions outside China overage rate (USD/GB) |
|---|---|---|---|---|---|---|
| micro | 20 hours | 40 | 5 | 0.117 | 7 | 0.175 |
| small | 5 hours | 400 | 22 | 0.055 | 33 | 0.083 |
| medium | 2.5 hours | 800 | 35 | 0.039 | 53 | 0.059 |
| large | 1.5 hours | 1,600 | 56 | 0.024 | 84 | 0.036 |
| xlarge | 1 hour | Unlimited | 140 | Free | 209 | Free |
The fees displayed on the purchase page take precedence. Higher specifications deliver better backup and restoration performance at lower overage rates. For performance benchmarks, see Performance tests on backup and restoration.
Choose the right specification
The best specification is the one whose free quota covers or just exceeds your estimated monthly backup volume.
Estimate your monthly backup volume:
Estimated monthly backup volume = Database size x Number of full backups per month
Example: A 150 GB database with 4 full backups per month produces an estimated 600 GB per month (150 GB x 4). For Chinese mainland pricing:
micro (Entry-level) cost = CNY 30 + (600 GB - 40 GB) × CNY 0.75/GB = CNY 450
small (Low-spec) cost = CNY 140 + (600 GB - 400 GB) × CNY 0.35/GB = CNY 210
medium (Mid-spec) cost = CNY 224 (No overage fees are charged because the actual data volume is less than the free quota.)
| Specification | Calculation | Monthly cost |
|---|---|---|
| micro | USD 5 + (600 GB - 40 GB) x USD 0.117/GB | USD 70.52 |
| small | USD 22 + (600 GB - 400 GB) x USD 0.055/GB | USD 33 |
| medium | USD 35 (no overage fees, actual volume is less than the free quota) | USD 35 |
In this example, the small specification is the most cost-effective. The medium specification is a reasonable choice if better backup and restoration performance is a priority.
Usage notes
Free quota resets at the start of each calendar month. Unused quota does not roll over.
Backup schedules can only be upgraded, not downgraded. For upgrade steps, see Upgrade a backup schedule.
Databases with large tables, large fields, or complex table schemas may exceed the capacity of lower-spec backup schedules and trigger backup exceptions. If this happens, upgrade the backup schedule to a higher specification and retry. If the issue persists, join the DBS DingTalk group (ID: 35585947) for technical support.
|
Backup schedule specifications |
Backup time for 100 GB database (reference) |
Free quota (GB/month) |
Chinese mainland region configuration fees |
Hong Kong and overseas region configuration fees |
Finance cloud configuration fees |
|||
|
Basic fee (CNY/month) |
Excess fee (CNY/GB) |
Basic fee (CNY/month) |
Excess fee (CNY/GB) |
Basic fee (CNY/month) |
Excess fee (CNY/GB) |
|||
|
serverless |
5 hours |
0 |
20 |
0.45 |
30 |
0.675 |
38 |
0.855 |
|
micro |
20 hours |
40 |
30 |
0.75 |
45 |
1.13 |
57 |
1.43 |
|
small |
5 hours |
400 |
140 |
0.35 |
210 |
0.53 |
266 |
0.67 |
|
medium |
2.5 hours |
800 |
224 |
0.25 |
336 |
0.38 |
426 |
0.48 |
|
large |
1.5 hours |
1600 |
359 |
0.15 |
539 |
0.23 |
683 |
0.29 |
|
xlarge |
1 hour |
No limit |
900 |
Free |
1350 |
Free |
1710 |
Free |
Pay-as-you-go
When you use Data Archiving in DMS, the system creates a pay-as-you-go backup plan. You are charged based on the actual backup data size.
Region | Backup storage costs (CNY/GB) |
The Chinese mainland | 0.75 Note If you initiate a cross-region backup from the RDS console, you are charged for the network traffic that is generated. For more information, see Network traffic costs. |
The Chinese mainland (Finance Cloud) | 1.43 |
China (Hong Kong) and regions outside China | 1.13 |
Reduce backup storage costs
To keep costs down, consider these approaches:
Match your specification to your backup volume. Overpaying for a large free quota you don't use adds unnecessary cost. Use the estimation formula above to size your specification accurately.
Avoid over-scheduling full backups. Each full backup counts toward your monthly data volume. Schedule full backups only as frequently as your recovery objectives require.
Upgrade proactively. Higher specifications have lower overage rates. If you consistently generate overage charges, upgrading your specification often reduces the total monthly cost.