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Posted by Anton Kolomyeytsev on April 12, 2016
ReFS: Log-Structured

Here is a part of a series about Microsoft Resilient File System, first introduced in Windows Server 2012. It shows an experiment, conducted by StarWind engineers, dedicated to seeing the ReFS in action. This part is mostly about the FileIntegrity feature in the file system, its theoretical application and practical performance under real virtualization workload. The feature is responsible for data protection in ReFS, basically the reason for “resilient” in its name. It’s goal is avoidance of the common errors that typically lead to data loss. Theoretically, ReFS can detect and correct any data corruption without disturbing the user or disrupting production process.

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Posted by Anton Kolomyeytsev on April 9, 2016
ReFS: Overview

This is a short overview of Microsoft Resilient File System, or ReFS. It introduces the subject and gives a short insight into its main characteristics and theoretical use. It is a part of a series of posts dedicated to ReFS and is, basically, an introduction to the practical posts. All the experiments that show how ReFS really performs, are also listed in the blog. ReFS seems to be a great replacement for the NTFS and its resilience is most convenient for cases, when data loss is critically unacceptable. The file system cooperates with Microsoft Storage Spaces Direct in order to perform automatic corruption repairs, without any attention of the user.

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Posted by Jon Toigo on April 7, 2016
Let’s Get Real About Data Protection and Disaster Recovery

Personally, I am getting rather tired of the dismissive tone adopted by virtualization and cloud vendors when you raise the issue of disaster recovery.  We previously discussed the limited scope of virtual systems clustering and failover:  active-passive and active-active server clusters with data mirroring is generally inadequate for recovery from interruption events that have a footprint larger than a given equipment rack or subnetwork.  Extending mirroring and cluster failover over distances greater than 80 kilometers is a dicey strategy, especially given the impact of latency and jitter on data transport over WAN links, which can create data deltas that can prevent successful application or database recovery altogether.

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Posted by Alex Samoylenko on April 6, 2016
Evaluation of Performance and Snapshot Consolidation Process Time in VMware vSphere

Snapshots in VMware vSphere often cause various problems with configurations and performance, unless they are properly used – for live backup of virtual machines and temporary keeping VM configuration before the update.

However, using them in large infrastructures is unavoidable. At some point you may need to delete/consolidate virtual machine snapshots (Delete All button in Snapshot Manager), which is quite time-consuming and demanding in terms of storage performance. Thus it would be a good thing to know in advance how much time it takes.

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Posted by Oksana Zybinskaya on April 6, 2016
NetApp dropped the ball by letting EMC gobble Data Domain

According to IDC quarterly report, EMC’s Data Domain leads in the purpose-built backup appliance market.

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Posted by Charbel Nemnom on March 28, 2016
Introduction to Microsoft Operations Management Suite (OMS) – Part IV

In part three of this multi-part blog series, we covered how to configure OMS to collect data through integration with System Center Operations Manager (SCOM), and through direct connections to individual servers. We also covered how Microsoft Operations Management Suite uses Solutions to deliver insights into your log data by providing a cost-effective, all-in-one cloud management solution so you can better protect guest workloads in Azure, AWS, Windows Server, Linux, VMWare, and Open Stack.

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Posted by Charbel Nemnom on March 24, 2016
Introduction to Microsoft Operations Management Suite (OMS) – Part III

In part two of this multi part blog series, we covered how to configure OMS to collect data through integration with System Center Operations Manager (SCOM), and through direct connections to individual servers. We also covered how Microsoft Operations Management Suite uses Solutions to deliver insights into your log data by providing a cost-effective, all-in-one cloud management solution so you can better protect guest workloads in Azure, AWS, Windows Server, Linux, VMWare, and Open Stack

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Posted by Didier Van Hoye on March 22, 2016
Need Hard Processor affinity for Hyper-V?

The need or perceived need for hard CPU processor affinity stems from a desire to offer the best possible guaranteed performance.  The use cases for this do exist but the problems they try to solve or the needs they try to meet might be better served by a different design or architecture such as dedicated hardware. This is especially true when this requirement is limited to a single or only a few virtual machines needing lots of resources and high performance that are mixed into an environment where maximum density is a requirement. In such cases, the loss of flexibility by the Hyper-V CPU scheduler in regards to selecting where to source the time slices of CPU cycles is detrimental. The high performance requirements of such VMs also means turning of NUMA spanning. Combining processor affinity and high performance with maximum virtual machine density is a complex order to fulfill, no matter what.

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Posted by Oksana Zybinskaya on March 18, 2016
Western Digital makes a $46, 314GB hard drive just for the Raspberry Pi

New, significantly improved Raspberry Pi 3 has been released this month. Improvements include a quad-core 64-bit ARM processor, an upgraded graphic processor, and a built-in wireless adapter. In order to meet the storage needs Western Digital has issued a new specialized low-profile hard drive called PiDrive.

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Posted by Charbel Nemnom on March 17, 2016
Introduction to Microsoft Operations Management Suite (OMS) – Part II

In part one of this multi-part blog series, we covered how to establish a Microsoft Operations Management Suite environment; in the second part, Part II, we will discuss how to get started with Microsoft Operations Management Suite and we will introduce OMS solutions. If you missed Part I, please make sure to check it here before you move on to Part II.

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