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StarWind Maintenance Mode Overview
Posted by Ivan Talaichuk on October 19, 2017
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Howdy, folks! I would like to start my tale at a little backstory regarding usefulness which the “maintenance mode” brings to us. And in order to do that, I’ll start from the times when updates have led to the downtime for production.

That’s not a secret for anyone that any production environment sometimes needs to be maintained. It could either be a software update or a hardware reconfiguration. To do this, the administrator should stop the production server for a certain period of time, and this may affect the reliability of the production environment. For example, the fault tolerance level can be decreased, as well as the performance. This is especially critical for small infrastructures which consist of 2 nodes.

So, let’s take a closer look at StarWind maintenance mode and what it delivers to us. First of all, it eliminates the downtimes caused by the planned nodes shutdowns and thus, allows keeping nodes in the pre-synchronized state so that synchronization resumption would not be needed. As a result, the system doesn’t experience any performance and availability degradation.

Enable the maintenance mode on HAimage

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StarWind VVols for VMware vSphere Environment
Posted by Dmytro Malynka on June 16, 2017
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Introduction

VMDK file to LUN storage architecture has been the most usable scenario for years until VMware released Virtual Volumes in vSphere 6.0. In the case of an array with block access, own VMware file system – VMFS  – was used -, and NFS was used for file storage. The array capacity was divided into LUNs or NFS-shares and presented ESXi hosts in the datastore form. Frequently, datastore is a large capacity storage housing numerous VMs. In fact, allocating a separate datastore for each VM is quite inconvenient and time-consuming in terms of administration.

With this approach, the VM storage maintenance operations are at the datastore level, and not at the Virtual Machine level. The operations like snapshots, replication, deduplication, encryption, etc. are performed at the storage level, thus being implemented faster with no use of compute and networking resources. The traditional VM storage technology described in vSphere is still supported. At once, Virtual Volumes (VVols) is an object containing VM files virtual disks and their derivatives.

This handy and at the same time advanced technology was integrated with StarWind Products, that I am about to implement.

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