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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 Disk IOPS Comparison IOPS vs Software

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Storage HA on the Cheap: Fixing Synology DiskStation flaky Performance with StarWind Free. Part 3 (Failover Duration)
Posted by Vladislav Karaiev on February 17, 2017
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We are continuing our set of articles dedicated to Synology’s DS916+ mid-range NAS units. Remember we don’t dispute the fact that Synology is capable of delivering a great set of NAS features. Instead of this, we are conducting a number of tests on a pair of DS916+ units to define if they can be utilized as a general-use primary production storage. In Part 1 we have tested the performance of DS916+ in different configurations and determined how to significantly increase the performance of a “dual” DS916+ setup by replacing the native Synology DSM HA Cluster with StarWind Virtual SAN Free.

Synology DS916 and StarWind

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Setting yourself up for a success with virtualization
Posted by Michael Ryom on February 16, 2017
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I am going to try to address a few issues I have seen quite a lot in my virtualization career. It is not that you have to take extra care when virtualizing, but your virtual environment will never be better than the foundation you build it on. The reason you do not see that many people fuss about it in non-virtualized environments (anymore). I believe, that resources are in abundance today. Well, they were so ten years ago as well, but since then we have only seen higher and higher specification on server hardware. It was the reason for starting to virtualize. Do not get me wrong – Lots of people care about the performance of their virtual and physical environments. Yet some have not set them self up for a successful virtualization project. Let me elaborate…

Mind the gap of virtualization

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Storage HA on the Cheap: Fixing Synology DiskStation flaky Performance with StarWind Free. Part 2 (Log-Structured File System)
Posted by Alex Bykovskyi on February 13, 2017
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Introduction

In this article, we are going to continue testing Synology DS916+ with StarWind Virtual SAN. Our main goal today is to improve the performance of Synology boxes specifically on random patterns. Randoms were chosen for a reason. SQL and OLTP workloads tend to cause huge stress, especially, to spindle arrays, generating a heavily randomized I/O. Patterns we are choosing for today’s benchmark are common for such environments. There are different approaches, which can handle these workload types, such as caching and tiering. Our approach is to build environment with StarWind Log-Structured File System. LSFS was created exactly for this type of environments to improve the performance.

We will compare the results we receive to the ones from Part 1 of our research.

Synology DS916+ StarWind

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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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The unknown microwave networks
Posted by Oksana Zybinskaya on November 17, 2016
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Recently, it became known that there is a private, mysterious network stretching between London and Frankfurt that is twice as fast as the normal Internet. The connection, provided by a series of microwave dishes on masts, was completely secret to anyone but one company. Only when a competitor completed its own microwave link between the two cities, the first company revealed that it too had a link between the cities in order to get a share in this potential market.

Similar stories can be found all over the world, but because these networks are privately owned, and because they are often used by financial groups trying to find an edge on the stock market and eke out a few extra billions, you have to investigate hard to find them.

The BridgeWave FP80-3000, capable of up to 3Gbps over 80GHz.

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Back to basics – RAID types
Posted by Askar Kopbayev on November 8, 2016
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If you ever worked in IT, you have heard the acronym RAID.  RAID stands for Redundant Array of Independent (some call it Inexpensive) Disks. So, it basically refers to a group of disk logically presented as one or more volumes to the external system – a server, for instance.

The main two reasons to have RAID are Performance and Redundancy.  With RAID, you can minimize the access time and increase the throughput of data. RAID also allows one or more disks in the array to fail without losing any data.

hot spare disk

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WD exposes new SanDisk drives: Blue and Green
Posted by Oksana Zybinskaya on October 19, 2016
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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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Manage VM placement in Hyper-V cluster with VMM
Posted by Romain Serre on September 23, 2016
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The placement of the virtual machines in a Hyper-V cluster is an important step to ensure performance and high availability. To make a highly available application, usually a cluster is deployed spread across two or more virtual machines. In case of a Hyper-V node is crashing, the application must keep working.

But the VM placement concerns also its storage and its network. Let’s think about a storage solution where you have several LUNs (or Storage Spaces) according to a service level. Maybe you have a LUN with HDD in RAID 6 and another in RAID 1 with SSD. You don’t want that the VM which requires intensive IO was placed on HDD LUN.

Storage Classification in Virtual Machine Manager

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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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