Invention Grant
US08954673B1 Using a conditional read request and a hash to determine synchronization of data in a cache at a host with data in storage array
有权
使用条件读取请求和散列来确定主机中缓存中数据与存储阵列中数据的同步
- Patent Title: Using a conditional read request and a hash to determine synchronization of data in a cache at a host with data in storage array
- Patent Title (中): 使用条件读取请求和散列来确定主机中缓存中数据与存储阵列中数据的同步
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Application No.: US13424402Application Date: 2012-03-20
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Publication No.: US08954673B1Publication Date: 2015-02-10
- Inventor: Assaf Natanzon , Zvi Gabriel BenHanokh , Felix Shvaiger
- Applicant: Assaf Natanzon , Zvi Gabriel BenHanokh , Felix Shvaiger
- Applicant Address: BM Hamilton
- Assignee: EMC International Company
- Current Assignee: EMC International Company
- Current Assignee Address: BM Hamilton
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- Main IPC: G06F13/00
- IPC: G06F13/00
Abstract:
In one aspect, a method includes sending a conditional read request from a host to a storage array requesting data in a data block stored at the storage array. The conditional read request includes a first hash of data in the data block at the host. The method also includes determining a second hash of the data in the data block stored at the storage array, comparing the first hash and the second hash, sending a reply from the storage array to the host with the data in the data block stored at the storage array if the first hash and the second hash differ and sending a reply from the storage array to the host without the data in the data block stored at the storage array if the first hash and the second hash are the same.
Information query
