The Eduladder is a community of students, teachers, and programmers just interested to make you pass any exams. So we help you to solve your academic and programming questions fast.
In eduladder you can Ask,Answer,Listen,Earn and Download Questions and Question papers.
Watch related videos of your favorite subject.
Connect with students from different parts of the world.
Apply or Post Jobs, Courses ,Internships and Volunteering opportunity. For FREE
See Our team
Wondering how we keep quality?
Got unsolved questions? Ask Questions

SANSTORAGE-AREA-NETWORKS-06CS833-Unit-7-->View question

Explain storage array based replication technology full-volume mirroring.?

 Explain storage array based replication technology full-volume mirroring.

Asked On2017-05-16 16:52:19 by:neenu2

Taged users:

Be first to like this question

Be first to dislike this question
Talk about this  Like  Dislike
View all qusetions
Array-based replication for business continuity can incorporate the creation of local copies of data within the same array as the source data, as well as the creation of remote copies in an array situated elsewhere. The largest storage vendors provide sophisticated technologies that provide this functionality driven either from the arrays themselves -- via management hosts that control the direction and identity of replication -- or within a virtualisation layer that operates in the SAN fabric or IP storage network.

Creating local and remote replicas of data gives an organisation a form of limited business continuity as well as enhancing its operational readiness by creating copies that can be used for testing and development. Using storage technology, this is achieved at a volume level (often grouped) and with features such as quality of service (QoS), priority controls, data consistency, source-target identity swaps, duplex data flow, protected copies, data queuing/batching and full or pointer-based read/write.

The same functionality can be somewhat achieved at the host layer by using Logical Volume Manager (LVM) and plexes/mirrors as well as any inbuilt "snap" functionality that may exist in the host LVM software. However, the feature set tends to be limited and management more onerous due to the need to operate within LVM and in close logical proximity to the source data.

Creating local replicas for the purpose of business continuity is easily achieved using LVM when only one to three copies of that data are required. When four or more copies are required, and the business demands time-specific restore points, it's advisable to create replicas using the storage software. This is because there is a greater ability to create a large number of copies that can be synchronised and 'detached' at specific intervals using advanced algorithms for incremental and full data copy. This, combined with intelligent space management techniques such as copy on read/write, make the storage software offering pervasive.

Answerd on:2014-10-21 Answerd By:neenu2

Be first to like this answer

Be first to dislike this answer
Talk about this  Like  Dislike

You might like this video:Watch more here

Watch more videos from this user Here

Learn how to upload a video and start earning here

Lets together make the web is a better place

We made eduladder by keeping the ideology of building a supermarket of all the educational material available under one roof. We are doing it with the help of individual contributors like you, interns and employees. So the resources you are looking for can be easily available and accessible also with the freedom of remix reuse and reshare our content under the terms of creative commons license with attribution required close.

You can also contribute to our vision of "Helping student to pass any exams" with these.
Answer a question: You can answer the questions not yet answered in eduladder.How to answer a question
Career: Work or do your internship with us.Work with us
Create a video: You can teach anything and everything each video should be less than five minutes should cover the idea less than five min.How to upload a video on eduladder