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Difference between Storage Works Mirroring and Continuous Access

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Khurram Shahzad
Regular Advisor

Difference between Storage Works Mirroring and Continuous Access

Hi All,

What is the Difference between Storage Works Mirroring and Continuous Access?????????????
7 REPLIES
Bhavnish Kamboj (BK)
Trusted Contributor
Solution

Re: Difference between Storage Works Mirroring and Continuous Access

Hi Khurram,

If you are talking about Storage Mirroring software of HP which is OEM of Double Take company. This software works over LAN monitors any changes to the critical
data and sends the changes to the target server. By replicating only the file changes rather than copying an entire file.

Mirroring is for server to server replication. Snapshots and restore functionality is also available with this software.

Where as if you talk about CA in terms with EVA then it replicates the data from one storage array to another over fibre channel. And this is done at block level not at file level.


Hope the above info is helpful to you.
Sivaramakrishna_1
Honored Contributor

Re: Difference between Storage Works Mirroring and Continuous Access

Hi,

Storage Works Mirroring is a Software based file system volume replication solution which makes replication over network using TCP/IP.

Continuous Access feature which is builted in storage Controllers and it is a Storage based replication which uses a FC or FCIP to replicated the Storage Volumes irrespective of file system.
Bhavnish Kamboj (BK)
Trusted Contributor

Re: Difference between Storage Works Mirroring and Continuous Access

krusty
Honored Contributor

Re: Difference between Storage Works Mirroring and Continuous Access

Short answer is StorageWorks Mirroring is host based replication for Windows environments and CA is array based replication that is operating system agnostic.

Cheers,

Curt
"In Vino Veritas"
Khurram Shahzad
Regular Advisor

Re: Difference between Storage Works Mirroring and Continuous Access

Thanks
Khurram Shahzad
Regular Advisor

Re: Difference between Storage Works Mirroring and Continuous Access

By the way what are advantages of Block level replication we get over file level replication? except speed.
hvhari
HPE Pro

Re: Difference between Storage Works Mirroring and Continuous Access

When using storage mirroring software - the hosts are requried to monitor and copy data. Whereas in case of CA , EVA itself will manage the monitoring & copying of data without involvement of the host
Regards,
Hari

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