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== Content Addressed Storage(CAS) - An Archival Solution ==

ISM Day 3

Backup & Recovery

  • 单纯以恢复已丢失或损坏的数据为目的而另外创建并保留的生产数据的拷贝。

NDMP

  • 备份数据直接从NAS发送到备份设备（不再需要通过应用程序程序服务器来传输数据）。
  • 在NAS客户端不需要安装NDMP客户端。

NDMP Client

  • installed as add-on software on backup server.

NDMP Server

  • NAS 机头用作执行备份并将数据发送到备份设备的NDMP服务器(NAS机头使用其数据服务器从存储中读取数据，然后直接发送到备份设备）
  • Only backup metadata is transferred over production LAN

VMAX 直接主存储备份方法

  • 无需额外的备份软件，将数据直接从主存储系统备份至备份存储。

deduplicate

File based

Segment Fixed

  1. VNX 8K
  2. ABC|EFG|HIG
  3. aAB|CEF|GHI|G

Variable Fixed

  1. Data Domain 4k-12K
  2. Avarma 1k-64K
  3. ABC|EFG|HIG
  4. aABC|EFG|HIG

Content Addressed Storage(CAS) - An Archival Solution

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