Advanced functions for storage subsystems: Supporting continuous availability

Azagury, Alain; Factor, Michael; Micka, W. F.

doi:10.1147/sj.422.0268

Cited by 14 publications

(7 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first kind of storage layer disaster recovery is implemented on top of specific physical storage devices, such as MirroView in EMC Clariion, SRDF in Symmetrix storage array [1] , IBM PPRC [2] and Hitachi TrueCopy [3] . The second kind of storage layer disaster recovery is based on storage volumes, like Veritas Volume Replicator [4] and Microsoft VSS.…”

Section: Conceptmentioning

confidence: 99%

“…(1) It is very difficult to share the disaster recovery infrastructure due to the deviceor application-dependent implementations of stateof-art DR techniques, which result in repeated DR system investments and expensive construction costs. (2) The recovery process is time-consuming. Previous studies mainly focused on the high efficiency of data backup, but partly ignored the recovery efficiency of archived data.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structure-independent disaster recovery: Concept, architecture and implementations

Zheng

Fang

2009

Sci. China Ser. F-Inf. Sci.

View full text Add to dashboard Cite

Disaster recovery (DR) techniques ensure the data safety and service continuity under different natural and human-made disasters by constructing a high reliable storage system. Traditional disaster recovery methods are structure-dependent. It is hard to share the DR resources between different DR systems, which made it expensive. We present a structure-independent disaster recovery theory and its implementation methods in this paper. By backup the whole system but not just the data, the goal of device and application-independent disaster recovery has been achieved. We further present a parallel recovery model and an on demand data retrieval method based on the theory. Some implementation details of prototype recovery system are also discussed. With the methods independent from specific devices or applications, the cost of disaster recovery infrastructure can be essentially reduced by resource sharing. Experiments show that the recovery time has also been greatly shortened with little service degradation. disaster recovery, parallel, virtualization

show abstract

Section: Conceptmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structure-independent disaster recovery: Concept, architecture and implementations

Zheng

Fang

2009

Sci. China Ser. F-Inf. Sci.

View full text Add to dashboard Cite

show abstract

“…The concept of backup is vital to improve reliability of data storage systems. Backup methods are usually based on data replication, also known as data mirroring [3][4][5]. In data mirroring, exact replicas of the original data are created to be sent to secondary storage systems in far locations.…”

Section: Introductionmentioning

confidence: 99%

A Mirroring Strategy for SANs in a Metro WDM Sectioned Ring Architecture under Different Traffic Scenarios

El-Gorashi

Pranggono²,

Mehmood³

et al. 2008

Journal of Optical Communications

View full text Add to dashboard Cite

SummaryIn this work, a novel data mirroring technique for storage area networks (SANs) is introduced in a metropolitan area wavelength division multiplexing (WDM) sectioned ring scenario. Simulation is carried out to evaluate the performance of the network with the proposed mirroring method for 16 and 24 nodes under two different traffic models-Poisson and self-similar. Simulation results show four network parameters including node throughput, queuing delay, transmission buffer packet dropping probability and receiver packet dropping probability. A modified version of the MAC protocol that improves mirroring time and bandwidth usage is also introduced and evaluated.

show abstract

“…It can be implemented at various levels, including the file system, the volume manager, the driver, the host bus adapter (HBA) and the storage control unit [1] [14]. In general, there are two locations at which mirroring are implemented: the storage control unit and the host.…”

Section: Introductionmentioning

confidence: 99%

“…IBM's Peer-to-Peer Remote Copy (PPRC) [1] and EMC's Symmetrix Remote Data FacilitySRDF[2] use a synchronous protocol at the level of the storage control unit. Today's storage control units contain general-purpose processors, in addition to special-purpose elements for moving and computing blocks of data.…”

Section: Introductionmentioning

confidence: 99%

An Implementation of Storage-Based Synchronous Remote Mirroring for SANs

Shu

Yan

Wen

et al. 2004

Lecture Notes in Computer Science

View full text Add to dashboard Cite

Abstract.Remote mirroring ensures that all data written to a primary storage device are also written to a remote secondary storage device to support disaster recoverability. In this study, we designed and implemented a storage-based synchronous remote mirroring for SAN-attached storage nodes. Taking advantage of the high bandwidth and long-distance linking ability of dedicated fiber connections, this approach provides a consistent and up-to-date copy in a remote location to meet the demand for disaster recovery. This system has no host or application overhead, and it is also independent of the actual storage unit. In addition, we present a disk failover solution. The performance results indicate that the bandwidth of the storage node with mirroring under a heavy load was 98.67% of the bandwidth without mirroring, which was only a slight performance loss. This means that our synchronous remote mirroring has little impact on the host's average response time and the actual bandwidth of the storage node.

show abstract

Advanced functions for storage subsystems: Supporting continuous availability

Cited by 14 publications

References 1 publication

Structure-independent disaster recovery: Concept, architecture and implementations

Structure-independent disaster recovery: Concept, architecture and implementations

A Mirroring Strategy for SANs in a Metro WDM Sectioned Ring Architecture under Different Traffic Scenarios

An Implementation of Storage-Based Synchronous Remote Mirroring for SANs

Contact Info

Product

Resources

About