信息生命周期管理的D2D2T备份方式
白皮书 作者： CommVault 2006-11-10
摘 要：
Disk to disk (D2D) is a new trend. The cost of disk is diminishing quickly, especially with regard to the cost of tape. Is this good? Yes. Is it as good as the hype? Yes and No. D2D does not eliminate tape, but it does offer an additional method for taming your data management challenges.
I suggest everyone reading this paper first take a step back, widening your lens and taking a picture of your entire data/information landscape. You need answers for many of the following questions to properly assess the value of D2D for your company:
• What are my perceived data storage or access problems?
• Why do I think D2D will help me?
• What do I think D2D is good for?
• What do I think D2D is not good for?
• What about my previous storage investment?
• What about my previously stored data?
• How about my insurance costs and the effect of new regulations for distance between copies of data?
• How about regulation compliance for information retention?
• Does my data consist mainly of files and static data or is it dynamic and ever-changing like transactional databases?
• Do I favor one vendor or buy best of breed?
• Do I have enough personnel to do integration and testing for each best of breed solution?
D2D is more than just faster throughput versus current tape solutions. It’s still about the data. It’s not about backup to disk or backup to tape, it’s really about maximizing effective use of all storage types in all locations. Each storage solution is meant for a particular phase in the lifecyle of a piece of critical information.
Disk to disk (D2D) is a new trend. The cost of disk is diminishing quickly, especially with regard to the cost of tape. Is this good? Yes. Is it as good as the hype? Yes and No. D2D does not eliminate tape, but it does offer an additional method for taming your data management challenges.
I suggest everyone reading this paper first take a step back, widening your lens and taking a picture of your entire data/information landscape. You need answers for many of the following questions to properly assess the value of D2D for your company:
• What are my perceived data storage or access problems?
• Why do I think D2D will help me?
• What do I think D2D is good for?
• What do I think D2D is not good for?
• What about my previous storage investment?
• What about my previously stored data?
• How about my insurance costs and the effect of new regulations for distance between copies of data?
• How about regulation compliance for information retention?
• Does my data consist mainly of files and static data or is it dynamic and ever-changing like transactional databases?
• Do I favor one vendor or buy best of breed?
• Do I have enough personnel to do integration and testing for each best of breed solution?
D2D is more than just faster throughput versus current tape solutions. It’s still about the data. It’s not about backup to disk or backup to tape, it’s really about maximizing effective use of all storage types in all locations. Each storage solution is meant for a particular phase in the lifecyle of a piece of critical information.
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