Hello everybody,
First, thank you for your input; I appreciate your help! I have the following question regarding space requirements for backups.
Here are the parameters:
- B&R Version: 12.1
- Performance Tier: Formatted with REFS, Cluster size 64KB
- Capacity Tier (Wasabi): Versioning and Object Lock enabled
- SOBR Configuration: Includes both the Performance and Capacity Tiers
- Daily Backup Job:
- Data size: 2 TB
- Compression Ratio: 50% (resulting in 1 TB Data on the SOBR)
- Daily Change Rate: 10% (resulting in 0.1 TB daily changed Data on the SOBR)
Case 1:
- Backup Job Data Retention: 21 Days
- Immutability: 10 Days
Space Requirement Calculation for Capacity Tier (Wasabi):
Backup blocks can be deleted after:
Retention Period(21 days)+Immutability Period(10 days)+Block Generation Period(10 days)=41
Space requirement: 1 TB+(40 days×0.1 TB/day)=5 TB
Case 2:
- Backup Job Data Retention: 10 Days
- Immutability: 3 Days
Space Requirement Calculation for Capacity Tier (Wasabi):
Backup blocks can be deleted after:
Retention Period(10 days)+Immutability Period(3 days)+Block Generation Period(10 days)=23
Space requirement: 1 TB+(22 days×0.1 TB/day)=3.1 TB
Is this calculation correct? Any input is highly appreciated! What are your settings / recommendations?
Thank you!
Andreas