Results tagged "Snapshot"
Total Search Results : 5
March 21, 2011 09:00 AMAs we discussed a few weeks ago, you can certainly argue that snapshots, when combined with replication, could serve as an adequate backup system. My biggest objection was that snapshots lack the catalog that conventional backup applications build as they back up data. Commvault's SnapProtect fills that gap by providing catalogs and a management console for snapshots across a variety of arrays and other snapshot providers.
February 24, 2011 09:00 AMI'm satisfied that snapshots and replication in conventional storage systems can serve the same function as more traditional backup schemes. While snapshots make satisfying the most common restore requests easy the limitations of most storage system's snapshot mechanism leave most organizations using snapshots as a supplement to, not a replacement for, backup copies. Does the cloud change the snapshot as backup calculus? Some cloud storage vendors say it does.
February 17, 2011 09:00 AMIn What Is A Backup?, I compared conventional backups to local snapshots, concluding that restoring data faster using backups is easier when you know where it was last. With conventional backups, an administrator, after cursing under his breath and wishing he could just say no to the CFO, could search the catalog database for *smith*.xls in Finance and locate the file. Since local snapshots don't include catalogs, it's harder to restore the data that disappeared sometime last summer. But there are more issues around using local snapshots for backup.
February 15, 2011 12:00 PMLast week EMC blogger Chuck Hollis started a bit of a firestorm when he questioned the marketing position some vendors are taking that local snapshots make traditional backups unnecessary. As we could expect, a series of EMC haters, employees of other vendors and industry analysts jumped in to add fuel to the fire. I think Hollis did ask a valid question: As technologies advance, what is a backup?
March 11, 2010 02:50 PMRedoLog corrupt errors are a common issue on VMware ESX/ESXi machines where machines are snapshotted and the datastore is allowed to run low on space. Use this step by step guide to get your machine back in business.