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VCS event triggers let you invoke user-defined scripts for specified events in a cluster. Triggers can be broadly categories into 2 categories: 1. Internal triggers: Internal triggers are non-configurable and always enabled. These triggers ...
Article by Sunil Yadav | 26 Jun 2015 | 0 comments
Oracle Solaris introduced kernel zones feature in Oracle Solaris 11.2, which provides the flexibility, efficiency and isolation of Oracle Solaris Zones while adding the capability for each kernel zone to run in an independent kernel.  Each kernel zone ...
Article by sudhir_h | 09 Jun 2015 | 0 comments
A cada dia que passa, mais temos visto os antigos ambientes complexos e custosos serem resumidos a um grande sistema virtual. Ambientes antes limitados a hardware físico tem sofrido o boom da virtualização. O que era incomum, agora se tornou ...
Article by MMartini | 29 Dec 2014 | 0 comments
Executive Summary I/O Fencing provides protection against data corruption and can guarantee data consistency in a clustered environment.  Data is the most valuable component in today’s enterprises. Having data protected and therefore consistent at ...
Article by AHerr | 10 Dec 2014 | 0 comments
Data Center Architecture In data centers like Cisco's UCS (Unified Computing System), every server be it blade or rack-mount, is provisioned through a Service Profile. Just the way a SIM card holds an identity of a mobile phone, the ...
Article by Kshitij_Korde | 31 Oct 2014 | 1 comment
The answer is almost! Even the smallest business, if relying on IT systems for critical operations like sales, production, industrial control system, tax processing or electronic receipt, some kind of DR capability should be in place. Depending on ...
Article by RAPHAEL F CARVALHO | 20 Jun 2014 | 0 comments
Sempre que falamos sobre alta disponibilidade, nos vem à cabeça redundância e DR. Particularmente, sempre que vou em um cliente, e desenhamos uma solução em conjunto, ao perguntar sobre RTO e RPO, temos uma pausa. Como ter um RTO e RPO consistente, ...
Article by MMartini | 12 Mar 2014 | 1 comment
As a Disaster Recovery and High-Availability Consultant, I've participated in several disaster recovery exercises, for different customers in different industries, most of them large financial institutions, that are severely regulated here in Brazil ...
Article by RAPHAEL F CARVALHO | 16 Dec 2013 | 0 comments
When evaluating a solution for high availability and disaster recovery, one should start with a few basic criteria.  Here are four. Principle #1:  An HA/DR solution should be simple. In the middle of the chaos of a disaster or outage, complexity ...
Article by bruceparker | 14 May 2013 | 0 comments
Storage Foundation Cluster File System (CFS) provides several advantages over a traditional file system  when running in a VMware guest OS.  The primary benefit is that multiple virtual servers (up to 64) using CFS can simultaneously access data ...
Article by ccarrero | 11 Feb 2013 | 5 comments