Abstract
Distributed computing architectures widely use
Cloud service datacenters to meet the performance of servers as many computing
applications are adopting a “cloud serviceâ€쳌 computing model. Typical examples
of such architectures include physical or logical separation of the computation
domain and the storage domain or the usage of distributed replicated storage,
where a host server replicates its data to remote servers. With these new
architectures, many high-performance servers in the datacenter either locally
cache, or store a copy of the data in a distributed storage system or, in the
case of a centralized storage system, locally cache the remotely-stored
persistent data. Such caching is performed in order to improve data access
performance. When an application using the cloud service needs to update the
data being used from a local cache or store, challenges can arise due to data
transfer latencies between the layers of a distributed architecture.FIU inventors have developed techniques and
systems for enabling local independent failure domains in a host server or data
center to address the challenges using a communications protocol between the
LA-IFD and its host server. These techniques include receiving a request to
write a data segment to persistent storage; synchronously storing the data
segment in a buffered data segment at the LA-IFD and initiating an asynchronous
update of the data segment at a remote storage system; sending a write
acknowledgement indicating completion to the requestor; and, after receiving a
completion notification from the remote storage system, removing the buffered
data segment from the LA-IFD. In some cases, techniques allow a host server and
LA-IFD pair to monitor one another for failures and implement a modified
protocol in the event of unavailability.
Benefit
Improves blocking performance on host serversMaintains scalability and data integrity levelsLess time spent in blocking can improve:performance for users of the application,resource management/utilization on the host server
Market Application
Scalable datacenter environments
Brochure
