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A little about Disk write cache on Windows VM
Posted by Bogdan Savchenko on March 9, 2017
5/5 (3)

Introduction

There are lots of great materials on optimization of virtualized environments that I think many of you will enjoy reading about. Such topics are all over the IT community and they cover a wide range of the technical questions. This article will focus on the matter which is not quite clear yet, especially when it comes from theory to practice. It’s about Windows Disk write cache feature and its implications for data consistency and performance of the virtual hard drives.

Test VM settings

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RAM Disk technology: Performance Comparison
Posted by Alex Khorolets on February 23, 2017
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Introduction

Since every computer now has a volatile amount of available storage located in the RAM, when compared to other direct-access memory used for data storage, for example, hard disks, CD-RWs, DVD-RWs and the older drum memory, the amount of time used to read/write the data differs in correspondence to the physical location and/or the medium used for reading/recording (rotation speeds and arm movement) the data.

The implementation of RAM as a storage provides a list of benefits over other conventional devices, due to the fact of the data being read or written in the same amount of time irrespective of the physical location of data inside the volume. Taken into consideration all the information mentioned above, it would be a crime not to take advantage of the provided conditions.

RAM

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Storage HA on the Cheap: Fixing Synology DiskStation flaky Performance with StarWind Free. Part 1 (Architecture)
Posted by Vladislav Karaiev on January 4, 2017
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Introduction

DiskStation DS916+ is a further improvement of DS415+ model. Storage capacity in DS916+ can be scaled using DX513 expansion units, making a total of nine 3.5 disk bays. Given the relatively small form factor and impressive capacity potential, such configuration may become a great solution for small businesses and enthusiasts.

Synology DS916+ StarWind

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Deploy VM Fleet to benchmark your storage system
Posted by Romain Serre on October 25, 2016
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VM Fleet is a collection of scripts that enables to deploy virtual machines which perform I/O to stress the underlying storage system. To achieve I/O, the VMs leverages DiskSpd which is a Microsoft tool.

When you implement an infrastructure based on Hyper-V, you usually want to get the maximum IOPS and MB/s that your storage can deliver. This tool helps you to get this information by stressing your storage. In this topic, we will see how to deploy a VM Fleet to benchmark the storage system.

windows server administrator

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WD exposes new SanDisk drives: Blue and Green
Posted by Oksana Zybinskaya on October 19, 2016
4.25/5 (4)

WD issued Blue and Green branded SATA SSDs, which are based on SanDisk technology for the first time.

The Green brand is for secondary storage, being reliable, cool and eco-friendly, whereas Blue ones are built for PC primary storage use. Other WD brand colours include Black for enthusiast products and Red for NAS and SOHO (small office, home office) use.

The Blue and Green SATA SSDs are designed to be used mainly in notebooks, PCs and workstations. The Blue product is optimized for multi-tasking and resource-heavy applications. Still, WD states that the Green SSDs deliver essential-class performance, and are a great option for every-day use.

Blue WD and Green WD

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Samsung reveals new super-fast 960 Pro and 960 Evo M.2 NVMe SSDs
Posted by Oksana Zybinskaya on September 23, 2016
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Samsung announced its 960 PRO and 960 Evo, the next generation M.2 PCIe SSDs. Like the 950 Pro, the 960 Pro and 960 Evo are PCIe 3.0 x4 drives using the latest NVMe protocol for data transfer. The 960 Pro offers a peak read speed of 3.5GB/s and a peak write speed of 2.1GB/s, while the Evo offers 3.2GB/s and 1.9GB/s respectively. The 950 topped out at a mere 2.5GB/s and 1.5GB/s.

The 960 Pro and the 960 Evo are planned for release in October. The Pro starts at $329 for 512GB of storage, rising up to a cool $1,299 for a 2TB version. The Evo price goes from $129 for a 250GB version to $479 for a 1TB version.

Samsung 960 Pro M.2 NVMe SSDs
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Musings on Windows Server Converged Networking & Storage
Posted by Didier Van Hoye on August 19, 2016
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Why you should learn about SMB Direct, RDMA & lossless Ethernet for both networking & storage solutions

fully converged Hyper-V Qos Courtesy of Microsoft

Server, Hypervisor, Storage

Too many people still perceive Windows Sever as “just” an operating system (OS). It’s so much more. It’s an OS, a hypervisor, a storage platform with a highly capable networking stack. Both virtualization and cloud computing are driving convergence of all the above these roles forward fast, with intent and purpose. We’ll position the technologies & designs that convergence requires and look at the implications of these for a better overall understanding of this trend.
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Seagate introduces 60TB SSD drive
Posted by Oksana Zybinskaya on August 16, 2016
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Seagate shows off two new SSD products: an 8TB NVMe drive and a spacious 60TB SSD prototype in a 3.5-inch form factor.

This 60TB consists of more than a 1,000 Micron 3D NAND dice fitted into a full-size, 3.5-inch disk form factor package. Apparently, it has dual port 12Gbit/s SAS interface and 150,000 random read IOPS, with undisclosed write IOPS. The sequential read/write numbers should be 1.5 and 1.0GB/sec.

Nytro XP7200

       Nytro XP7200  with heat sink on top

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ReFS: Performance
Posted by Anton Kolomyeytsev on June 23, 2016
4.75/5 (4)

ReFS (Resilient File System – https://msdn.microsoft.com/en-us/library/windows/desktop/hh848060%28v=vs.85%29.aspx) is a Microsoft file system, which ensures data integrity by means of resiliency to corruption (irrespective of software or hardware failures), increases data availability and scales to large data sets across various workloads. Its data protection feature is represented with the FileIntegrity option, which is responsible for file scanning and repair processes.

ReFS
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Manage storage QoS Policies from VMM 2016
Posted by Romain Serre on June 17, 2016
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The QoS policy was a feature included in Windows Server 2012 R2 that enabled to set a minimum and a maximum IOPS on a VHD(X). These policies were not centralized and you had to set the QoS policy on each VHD(X) independently.

In Windows Server 2016, Microsoft has improved this feature because the policy can now be stored in the cluster database. You can create a policy based on a minimum / maximum IOPS and/or a bandwidth. This policy can be applied to a VHD(X) (Dedicated Policy Type) or to a set of VHD(X) (Aggregated policy Type).

QoS policies
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