Published: Monday, 18 January 2016 18:57
Written by Filippo Moriggia
Backup & Replication allows to protect VMware infrastructures, it integrates with Amazon and vCloud and is ready for multi-tenancy
The most innovative backup and disaster recovery solutions of the last years are all related to the virtual sphere, also because nowadays the use of hypervisor is implied in the construction of whatever server infrastructure or server. Nakivo is certainly one of the youngest players in this sector and only offers -at the moment- a backup solution for the VMware platform, but in the last few years it has showed a dramatic growth in terms of available features.
We tried version 5.9 that goes well beyond the idea of simple backup of virtual machines, and offers a quite sophisticated infrastructure based on distinctive elements that can integrate on the local network or to connect different offices, branches or datacenters.
These elements are Director, Transporter and Backup Repository; they can talk amongst them also from distinct geographical positions.
Nakivo Backup offer the best flexibility in terms of installation: indeed it’s available as Windows or Linux installer, but it can be deployed also as a virtual appliance. In this case the choice is vast: the Full Solution appliance is suitable for smaller installations and offers all the elements of the architecture, while bigger and more demanding installations can leverage single components or a combination of them. The Director is also available in a multi-tenant version for those who provide Backup, Recovery or Disaster Recovery services to different clients.
Nakivo offers a complete scheduling of backup jobs
There are several advanced options available
Tenant configuration is immeadiate using the dedicated panel
You can manage several accounts from the dedicated dashboard
The dashboard shows the main information of backups status
Data traffic monitoring is available as well
You can also monitor the status of the storage devices used as repository
Appliances, which can be installed in a few minutes using the OVF deployment procedure in vSphere, are based on Ubuntu Linux and, by default, have 4 Gbyte of RAM, 2 vCPU and the disk takes a couple of Gbyte if configured in thin mode (almost 550 Gbyte if thick mode, 30 are for Director Multitenant). Nakivo’s official requirements ask of at least 4 Gbyte or RAM for Director and Transporter and 350 Mbyte for each additional job to execute simultaneously. Talking about operating systems, Nakivo Backup & Replication supports Windows Server 2008 R2, 2012 and 2012 R2 in addition to Windows 7 Professional and 8 Pro. Supported Linux platforms are Ubuntu 12.04 Server, Suse Linux Enterprise Server 11 SP3 and Red Hat Enterprise Linux 6.3..
Nakivo Backup & Replication also allow to retrieve single files inside VMs: supported file systems are Ntfs and Fat32 for Windows machines, Ntfs, Fat32, Ext3, Ext4 and Xfs for Linux machines. You can also restore single objects in Microsoft Exchange (versions 2007 and 2010) and Microsoft Active Directory (on Windows 2008, 2008 R2, 2012, 2012 R2).
A software for everybody
Despite the complexities at the basis of Nakivo naturally grew with the growth of its features, the product still remains one of the easiest to use on the market. The interface of the program is accessible via Web at the IP address assigned to the VM (port 4443, HTTPS of course).
The initial configuration procedure can set the vSphere server (or servers) to protect indicating the vCenter credentials, decide whether to use the integrated or an external transporter and specifically defined repositories to store backups.
Once completed this step you can create the first jobs, or switch to the advanced configuration to complete the system configuration. It’s a good habit to set the SMTP server to send reports, for instance: server with SSL certs with or without authentication are supported, and different email addresses can be set to send report abouts jobs, error or warnings and an overview report.
In the global configuration section you can modify the Web interface with a custom logo and background: resellers that want to offer the product with their brand can easily do that, they can also change the support email address and the name of the company. From the same section you can access to the Licensing management and to an useful Events section with the log of all the systems event, from complete backups to modified parameters.
Backup or Replication
Nakivo allows to create backup and replication jobs. The first step in the creation of a backup is to select the VM (or the VMs) to save, then select the backup repository: obviously the available ones are the ones defined according to the configuration of the program. If some backups are already present on the selected repository, you can choose whether to use the existing archive as destination or to create a new one. The third step is scheduling the time and the frequency of the backup, while the advanced options are specified in the final phase.
To identify modifications, Nakivo leverages VMware’s CBT (Changed Block Tracking) technologies or its own. VMware’ technology is the default and suggested one, but in the job it’s possible to define a behaviour to adopt if vSphere notices an error: the proprietary solution is a possible choice, alternatively a reset of the CBT configuration can be tried, or simply let the backup fail. In case of error you can also enable the “Double check changed blocks provided by CBT” option that performs a double check in order to prevent CBT from creating backups with an exaggerate dimension due to some problem. The technology by Nakivo to check changed blocks is used even if the VM is powered off: in this case VMware CBT is not available.
If the backup destination is not local, you can enable the network acceleration feature so that you can save traffic by using data compression and reducing the needed bandwidth. In these cases it’s useful to enable ciphering during transfers.
On Windows VMs that are being backed up, you can enable the application-aware mode that leverages VMware’s quiescing systems (based, on its turn, on Microsoft’s VSS) in order to avoid suspended writings, thus guaranteeing a consistent backup even if the operating system is still running.
Automated backups check
Nakivo Backup can automatically test backups immediately after the execution and provide as “evidence” of the test a screenshot of the restored VM. You just check the Run screenshot verification flag and compile the form that appears after the selection is active to define the test environment parameters: hosts or clusters and datastores on which perform it and number of VMs to test together, wait time before screenshot and RTO (Recovery Time Objective), that is, greatest time needed to restore that can be considered sufficient in order to talk about efficient restore.
Data retention options
As all backup softwares, Nakivo too allows to define a number of recovery points that establish the data retention level. You can keep only the last -nth recovery points and at least a point for each number of days, week, months and years defined in the options.
Repository backups of Nakivo store restore points in a single central archive, organized according to jobs, VMs and date.
Nakivo Backup & Replication can also run scripts before and after backups: it supports Windows scripts (if using a Windows VM) and Linux scripts (only if run in a Linux environment). It cans also wait until the end of scripts in the starting phase and mark the job as failed or successful according to the status of the script. If the machine to backup has Exchange running, Nakivo can truncate the logs of the Microsoft application to limit the dimension of the VM after the backup has been successful. Obviously, it requires a Windows user with administrative permissions.
Always ready replication
The procedure to create a replication is similar to a backup one: the main difference is, obviously, the choice of the destination. You don’t need to select just a repository, instead you need to specify the destination host or cluster for replication and the datastore and network configuration for the VM to be created. Replication too can be scheduled to be executed at certain times, and the same considerations about Block Tracking technologies, recovery points and screenshot verification still hold, as we’ve talked about backups. Among the specific options it’s worth to note you can use a different name for the created VM (for instance, appending “-replica” to the original name) and enable the use of only Thin disks.
Repository: internal or external
Nakivo Backup supports two kinds of backup repository: Windows network shares (based on CIFS, therefore compatible with Linux or dedicated NAS) and its proprietary repository based on a machine or an appliance with Transporter installed. Naturally the storage of such VMs can be then placed on any datastore supported by VMware.
The max limit of available space on a Nakivo repository is 128 Tbyte: the software itself compresses and deduplicates VMs on a block level. Data is then natively stored in terms of incremental data with respect to the first, complete backup: you don’t need a periodic “full” backup. Deduplication is enabled by default but is can be disabled should you use a storage that automatically deduplicates data. Storing backup on tapes is supported, but this operation must be performed with third-party software or with a simple script-based copy: the repository however must be “detached” in the copy towards tape by Nakivo using the scheduled linking and unlinking capabilities available.
A completely innovative feature introduced with Nakivo 5.9 is the chance of using the software itself inside a compatible NAS. This allows to make the backup procedures completely autonomous and independent from the main VMware infrastructure, thus saving precious VMware host resources. Naturally not every NAS is supported, but the list is ever growing and includes more than 20 different products by Synology and 2 models by Western Digital. The software can be easily uploaded using the Windows and Linux installer made available by Nakivo and it allows to leverage supported NAS as a complete backup solution that cover all the elements of an infrastructure. Nakivo can, indeed, run on a quite low-end NAS, as it requires just 2 cores (Intel CPU) and 1 Gbyte of RAM to work properly.
Easy recovery in the Cloud
Amongst the most advanced available features there’s the direct integration with the Amazon Web Services (AWS) and vCloud director cloud. You can enter, in the configuration section, the credentials of AWS and define the region and initial space to allocate. This way you can directly take advantage of the EBS (Elastic Block Cloud) space to store backups and replications, and be ready to restore a VM in Amazon’s cloud.
Backup in Amazon S3 (Simple Storage Service) is not supported at the moment, while you can use a service like vCloud Director setting the remote server in the Inventory of Nakivo Backup & Replication.
Ready to be multi-tenant
Those who have a cloud infrastructure, or even a small datacenter, and wants to provide backup service for clients will find in Nakivo a system easy to configure and capable of running with limited resources. The Director appliance for multi-tenant solutions indeed allows to create completely distinct environments for each client by directly associating licences for each of them, starting from at least one socket. The selection of host, backup repository and Transporter is set by the system administrator and can be hidden to single clients: each client can create and administer his/her own backups, replications and restore procedure if he/she is an administrative user. If needed, guest credentials can be created to see reports and dashboard and, optionally, restore files and objects from Exchange or Active Directory.
Licensing for everybody
Nakivo is sold in 4 different versions: the first one and cheapest (169 $ per socket, VAT excluded) is Pro Essentials, available in packages for 2, 4 and 6 sockets; it includes the backup and replication capabilities, including restore on Amazon, restore files and objects from Exchange and Active Directory. The only things missing are the Multi-tenancy features, Branding and License delegation and the local administration of remote branches. The Enterprise Essentials version (249€/socket) maintains only the purchase constraint of 2, 4 or 6 sockets packages, while the Pro (329€/socket) and Enterprise (509€/socket) have the features of the relative Essentials versions, but they can be also sold starting from a single socket, without any limitation, not even upper limits.
Nakivo Backup & Replication performed very well in our tests, proving to be reliable and quick, both as an integrated solution and using the separate architecture with Director, Transporter and Repository. The software is easy to manage and configure, the documentation (available in English language) is complete and easy to consult. Who would like a documentation in Italian can look at Avangate Italia (Nakivo Gold Partner), which also organizes Webinars periodically (like this one) to explain features.
We haven’t experienced any difficulties at all even in the most complex operations, like preparing a multi-tenant architecture: the use of the Web interface then allows you to easily interact with the system even if being out of the office or doing a remote intervention for a client.
Reporting features are good too, and we appreciated the notification messages via email that are clear and handy to keep under control the situation also when clients are many and infrastructures heterogeneous.
While not being one of the most complete solutions -in terms of features- available on the market yet, Nakivo Backup & Replication has a flexible and cheap licensing, thus making extremely interesting in an SMB sphere, where a light product, easy to configure and quite cheap guarantees a good level of protection even when resources are limited.