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Knowledge Base Articles

Cheat sheet : VCS Event Triggers

  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 reside...

VCS support for Oracle Solaris Kernel Zones

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 zon...

sudhir_h by Level 4
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Os novos caminhos da virtualização

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 rotinei...

MMartini by Level 3
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High Availability for converged infrastructure in data centres

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 Service Profil...

VVR - Sync e Async

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, p...

MMartini by Level 3
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Do you believe your DR will work in a case of a disaster?

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 ...

RAPHAEL_F_CARVA by Level 5
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Four principles for cost-effective disaster recovery

  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 is...

bruceparker by Level 3
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Avoiding Service Interruption with I/O Shipping Technology

One of the new features that has been introduced within Storage Foundation Cluster File System HA 6.0.1 is I/O Shipping. This new feature improves resiliency across Cluster File System nodes reducing downtime and improving resiliency. I/O Shipping is...

ccarrero by Level 4
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Passthru Mode - Verify if SRL Disk is faulty or not ?

I have faced Replication in Passthru mode twice, Once it happened at one of our client and then I faced it at my Internal office. Firstly I read in detail what is the root cause of replication to enter into Passthru mode. This is the summary of why t...

VxDMP: A storage device manager

Typically any storage device is accessed using a specific protocol (IDE/SCSI) device driver. The device driver deals with mechanisms to access the device and sending commands to it using the transport mechanism provided by the underlying transport or...

Diskgroup types in UNIX and Windows

  There are quite a few disk group types and some are similarly named between UNIX and Windows, but have different meaning, so this article aims to clarify the different types which are as follows: Root/Boot disk group (rootdg) in UNIX is an optional...

mikebounds by Level 6
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Announcing the Agenda for SAMG Customer Forum 2012

We are excited to announce the agenda for the Storage and Availability Management Group (SAMG) Customer Forum 2012. We have only limited seats available for this highly technical event run by the engineers for the engineers. If you have not done alre...

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