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cluster and hot stand by

Rahul Katta
Greenhorn

Joined: Jan 12, 2011
Posts: 12

Cade's deployment diagram shows DB cluster and a hot stand by, do we need a hot stand by when we have a cluster ?
and
any pointers on specifying the CPUs, RAM, Network and Storage Details ?
Rahul Katta
Greenhorn

Joined: Jan 12, 2011
Posts: 12

I read Cade's book, which says a two node cluster can be symmetric (both running at the same time) asymmetirc (one hot stand by) .
Does this mean the Database in Cade's deployment diagram is a three node cluster with two running at the same time and one hot stand by ?
appreciate your help ...
Rishi Shehrawat
Ranch Hand

Joined: Aug 11, 2010
Posts: 218

I read Cade's book, which says a two node cluster can be symmetric (both running at the same time) asymmetirc (one hot stand by) .
Does this mean the Database in Cade's deployment diagram is a three node cluster with two running at the same time and one hot stand by ?

Yes
Cade's deployment diagram shows DB cluster and a hot stand by, do we need a hot stand by when we have a cluster ?

Depends on the redundant capacity that is there on the cluster with 2 servers. In case there is enough redundant capacity that a single server will be able to serve users without impacting SLA's, then hot standby might not be required
any pointers on specifying the CPUs, RAM, Network and Storage Details

I had specified CPU, RAM & disk capacity.
Rahul Katta
Greenhorn

Joined: Jan 12, 2011
Posts: 12

Thanks Rishi, really appreciate it.

Did you specify just the number of CPUs or did you include clock rates as well ?
 
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