IBM DevOps Code ClearCase vs. Percona XtraBackup

IBM Rational ClearCase might be better suited for a smaller / simpler code base. Larger code bases really slow it down... but then again there are better alternatives out there for source control

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Well suited to databases < 10TB. For larger than this, I would go with snapshots.

• Rational ClearCase is excellent for handling versioning and branching. No other tool I've used has the depth that ClearCase has when it comes to handling complex branching scenarios and identifying where certain versions of particular files are within a particular configuration.
• Rational ClearCase handles parallel development of many dependent applications really well.
• The use of ClearCase Views to switch between projects and configurations is extremely convenient as opposed to the local workstation model of the competitors.

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• Non-blocking backup : Backup process will not put any lock on the database.
• Fast recovery : As it's a file level backup so it's quite fast in both backup and recovery.
• Consistent backup : Xtrabackup always ensures consistent backup.
• Easy to configure and Use.
• Integration with clouds

• Extremely buggy.
• Sometimes the repository gets locked for no reason.
• Slow.

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• The only feature that could use some improvement is partial backup restores. For example, I have a multi-tenant database at the schema level running on a single Percona Server instance. As a tenant grows too large for the share instance or becomes a noisy neighbour we need to move a the tenants schema to its own instance with minimal downtime, meaning that we would run the new instance as a replica with replication filters until failover. In terms of doing a consistent backup, there may be challenges and it is currently possible with XtraBackup, but it would be great if the process was simplified and ensured to be consistent.

Takes a bit of getting used to when you first set it up.

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If you pay for support it is great, otherwise you have to google.

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If development is centrallized to one location and your company releases hundreds of customized versions of your software per year, then ClearCase is the best tool for managing the complexity of multiple versions of customized software. If your company has globally distributed development, then I'd recommend Team Foundation Server over ClearCase. If your organization uses Agile Methodologies, then I'd recommend TFS with GIT.

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We have evaluated Mysqldump and MySQL Enterprise backup. Mysqldump is not a scalable solution. MEB is a paid and closed source. As we are truly open-source, we were looking for an open-source solution that was reliable and scalable. Xtrbackup has all the required features to fulfill our requirements.

• Managed code versioning for many years.
• Only one person can edit code at a time - slows processing down.
• IBM is an expensive product to support.

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• Secure, reliable, fast and consistent backups. Open source with zero cost.
• We satisfy our regulatory requirements.