mirroring and alwayson

hi,

how mirroring and alwayson are diferent. What are various types of mirroring. what are advantages of each.

what i rpo and rpt and ms hcl means
please advise
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gudii9Asked:
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65tdRetiredCommented:
Mirroring "Database mirroring provides protection for a single-user database to one secondary mirror server."

AlwaysOn Failover Clustering Instances (FCI) are designed to provide server/instance level protection from both planned and unplanned downtime.

Two servers required regardless.

compare doc:
https://logicalread.com/sql-server-availability-technology/#.WjyLOh2nG00
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65tdRetiredCommented:
HCL - Hardware Compatibility List, also see :  Windows Compatible Products List :  https://sysdev.microsoft.com/en-us/hardware/lpl/

SQL
Recovery Point Objective(RPO)

Recovery Time Objective (RTO)

From:  http://sqlserver-dba.co.uk/sql-server-administration-basics/sql-server-rpo-rto
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Vitor MontalvãoMSSQL Senior EngineerCommented:
Mirroring is deprecated since SQL Server 2012 and it has been replaced by SQL Server AlwaysOn feature that really appeared on SQL Server 2012.
Maybe the biggest difference is that you can't access a mirrored database replica, thing that you can with AlwaysOn.
Other big difference is that you access an AlwaysOn database replica by using a listener and not direct SQL Server instance name.

what i rpo and rpt and ms hcl means
Did you try to google it before asking here?
I also don't think that you want to refer to rpt but rto, right?
So read this Wikipedia article: https://en.wikipedia.org/wiki/Recovery_point_objective

About MS HCL, as far as I know, they are 2 companies: Microsoft and HCL. Maybe if you contextualize us, we will help you better.
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Vitor MontalvãoMSSQL Senior EngineerCommented:
Recommendation to close this question by accepting the above comments as solution.
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