In the sense that your backups are a surviving copy of your data, sure. That said, an argument such as "system is down while we restore from backup; some recen

In the sense that your backups are a surviving copy of your data, sure. That said, an argument such as "system is down while we restore from backup; some recent data may be lost" will not go over as well as "the system remains available, but performance will be negatively impacted while the array rebuilds; no data has been lost at this time". In the former, you're in crisis mode. In the latter, you'll probably be under some stress, but you're still in the clear. Edit: But we're all on the same page when it comes to backups. They're a necessity.