【白皮书】备份（第三章）：复制

瓶客

摘　要：
At the simplest level, all backups produce copies of valuable data that protect an organization against loss,theft, failure and other unforeseen calamities. But traditional “backups” are typically relegated to slow tape or optical media where data is not intended for ready access. “Copies” are a bit different, usually duplicating data to nearby disk and allowing quick restoration when the original data is compromised. Today, copies go far beyond simple disk-to-disk file transfers. There’s growing specialization and diversity in data copies ? allowing storage administrators to select copy platforms that meet specific requirements for performance and retention.


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