Efficient Backups, Quick Restores, and Maximized Storage
Santee backs up the city’s 150TB of data with daily incrementals, weekly fulls, and monthly fulls as well as an hourly log backup for its SQL data. After 30 days’ retention, the data is copied from the ExaGrid system and archived onto tape. Santee has found that using ExaGrid has made backups more manageable. “When we were using tape, we had backup windows that were running longer than a 24-hour period, so we had to stagger the jobs and even cut some of them. Since switching to ExaGrid, our backup windows have shrunk and now even making a disk-to-tape copy of our backups no longer affects the production system like it did in the past.”
In addition to keeping backup jobs running on schedule, switching to ExaGrid has also greatly improved how quickly data is restored. “The management of restores has been where we’ve seen our biggest gain, especially when it comes to restoring SQL data. If an end user accidentally deletes data from a file server, the total time it takes from receiving the ticket request to restoring the data is about half an hour, whereas with tape, it could take up to three days.”
According to Santee, ExaGrid’s data deduplication has allowed the city to buy less storage. ExaGrid writes backups directly to a disk-cache Landing Zone, avoiding inline processing and ensuring the highest possible backup performance, which results in the shortest backup window. Adaptive Deduplication performs deduplication and replication in parallel with backups for a strong recovery point (RPO). As data is being deduplicated to the repository, it can also be replicated to a second ExaGrid site or the public cloud for disaster recovery (DR).