vision dt solutions vmug leeds

Leaders Have Vision™ visionsolutions.com 1

Protecting Physical and Virtual

Machines with Double-Take

Virtual Recovery Assistant

Andy Ebbs

Solution Architect

[email protected]

+44 1905 728 023

+44 7917 326 602

mailto:[email protected]


WHO IS DOUBLE-TAKE SOFTWARE?

Since 2010 part of VISION SOLUTIONS

Founded 1991 as NSI Software

HQ in Irvine, California

Focused on

- High Availability

- Disaster Recovery

- Server Migration

- Systems Management

Worldwide 700 Employees (80 EMEA)

20.000 Customer with 190.000 Installations

Partnership with Microsoft, VMware, Dell, HP...

24/7 Support


Core Protection Products


Physical. Virtual. Cloud.

Solutions for availability, backup and migration in

physical, virtual, and cloud environments

Cloud

Virtual

Physical


Replicate anything to anything (hardware, application,

hypervisor independent)

Restart production in less than few

minutes // Restore Full Server or single

Object // Hardware migration

Replicate anywhere to anywhere (unlimited

distance, very low bandwidth consumption)

DOUBLE - TAKE SOFTWARE Solutions


Technologies to make Availability Work

• Real-time Replication – Data consistency

– Hardware & application independent

– Designed for WAN use


HOW DOES IT WORK?

Application layer

Operating system

Hardware layer

User application

Double-Take

driver

Application layer

Operating system

Hardware layer

Double-Take

driver

Double-Take

service

Double-Take

service

An initial mirror copies all

of the data to the target

HDD HDD


HOW DOES IT WORK?

Application layer

Operating system

Hardware layer

HDD

User application

Double-Take

driver

Application layer

Operating system

Hardware layer

HDD

Double-Take

driver

Double-Take

service

Double-Take

service

The Double-Take

driver sees bytes of I/O

en route to the file

system and copies

them into memory

As confirmation of the

write travels back to the

application, Double-Take

then sends the bytes to

the target


HOW DOES IT WORK?

Application layer

Operating system

Hardware layer

HDD

User application

Double-Take

driver

Application layer

Operating system

Hardware layer

HDD

Double-Take

driver

Double-Take

service

Double-Take

service

During high-latency

periods, Double-Take

will buffer changes to

memory Disk

Queue

If configurable memory

buffers are exceeded,

Double-Take will buffer

to disk for additional

latency tolerance


HOW DOES IT WORK?

Application layer

Operating system

Hardware layer

HDD

User application

Double-Take

driver

Application layer

Operating system

Hardware layer

HDD

Double-Take

driver

Double-Take

service

Double-Take

service

Once latency

improves, replication

resumes transmission,

preserving write-order

consistency

Disk

Queue


REPLICATION

• STAR Technology (Sequential Transfer Asynchronous

Replication)

• All changes are transmitted on Byte-Level

• Support of NTFS, FAT / EXT2/3/4, Reiser filesystems

• Only change- and write operations are monitored

• Granular selection of data (File/Folder/Partition, wildcard

support)

• Minimum performance loss on the source server

• Live filesystem on target server

• Multi-NIC support (dedicated replication NIC)

• Three levels of intelligent data compression

• Bandwidth management


P2V Failover Physical Many-to-One Single Server

VM Failover Physical One-to-Many Physical One-to-One

Fits Any Environment



• Application Management – Exchange, SQL, SharePoint

wizard configuration

– Supports cluster protection and

Geocluster solution

– Failover and Failback

DATA

APP

OS

DATA‘

APP

OS

Replication

Monitor



• Full Server Protection – OS + Application + Data

replication

– No application and maintenance

on target environment

– Failover & Failback

DATA

APP

OS

OS

Replication

Monitor

DATA‘

APP‘

OS‘


FULL SERVER PROTECTION

Production

Server Recovery Server Basic Windows file

server

DR_01 BES_01

Staging

Directory

BES_01

Staged information

overwrites system

configuration (non-

hardware)

Recovery Server Reboots and

becomes identical

to source server



• Server portability & On

demand DRP – Protect entire Windows servers

and failover to any platform

– Dissimilar hardware support

– ESX or Hyper-V VMs auto-

provisioning

– Efficient replication enables

remote VM availability

– P2P, P2V, V2P, V2V …


VIRTUAL RECOVERY ASSISTANT

Target VM is automatically provisioned

Real-time Replication

No OS/Application licensing on target

Supports Windows 2003-2008 R2 sources

Hyper-V or ESX

Replication

Monitor

source_d.vmdk

Source1_Replica (offline)

Source 1

Drive D

ESX / Hyper-V

source2_c.vmdk


Source 2

Drive c

VRA Helper

Drive C

source_c.vmdk

source2_c.vmdk

Source2_Replica - Online


MIXED PROTECTION – Physical & Virtual

Replication

Monitor

VRA Helper


ESX / Hyper-V

source2_c.vmdk


source_c.vmdk

source_d.vmdk

Source 3

Drive c

VRA Helper

source_d.vmdk


source_c.vmdk

source3_c.vmdk


Replication

Monitor

ESX / Hyper-V

source2_c.vmdk




• Host-Level Protection – Hyper-V host protection with

real-time replication

• Add remote availability to a

Hyper-V HA cluster

• Crossed Hyper-V High-

Availability

– ESX host protection with

• Host level management

• Guest installation


HOST-LEVEL Hyper-V

Replication of the complete VM

OS & hardware Independent

No software installation within the VM

Support of Microsoft Hyper-V (incl. core edition)

NEW: Support of Hyper-V Cluster-to-Standalone

Replication

Monitor


HOST-LEVEL ESX

vCenter

Double-Take

Service

Replication

Monitor

Snapshot based replication of the complete VM

OS & hardware Independent

No software installation within the VM

Support of VMware ESX (no ESXi)


Windows & Linux Comparison


Virtual Recovery Appliance

Windows_Replica

Linux_Replica

Virtual Recovery Appliance

Windows Server

Linux Server

ESX Host


Q&A


Thank you!