Microsoft Storage Spaces Direct

Posted by Anton Kolomyeytsev on November 20, 2015

To be fair, Microsoft Clustered Storage Spaces was not a true Software-Defined Storage solution, because it relied completely on hardware: SAS JBOD, SAS HBA, SAS HDD, SAS flash, SAS fabric. While okay for relatively small deployments like SMB or ROBO, such an approach made it useless for Enterprise. Now Microsoft has solved the problem by introducing Storage Spaces Direct.

(more…)

1 Star2 Stars3 Stars4 Stars5 Stars (5 votes, average: 3.60 out of 5)
Loading...

Here’s what LSFS (WAFL, CASL) is about. Where Log-Structuring concept came from, what it’s good for and why.

Posted by Anton Kolomyeytsev on October 26, 2015

Log-Structured File System is obviously effective, but not for everyone. As the “benefits vs. drawbacks” list shows, Log-Structuring is oriented on virtualization workload with lots of random writes, where it performs like a marvel. It won’t work out as a common file system for everyday tasks. Check out this overview and see what LSFS is all about.

Read more…

Related materials:

LSFS: Eliminating “I/O Blender”

LSFS Container Techinical Description

1 Star2 Stars3 Stars4 Stars5 Stars (6 votes, average: 3.50 out of 5)
Loading...

RAID 5 was great, until high-capacity HDDs came into play, but SSDs restored its former glory.

Posted by Anton Kolomyeytsev on October 2, 2015

Technology often becomes obsolete these days, but sometimes a single change in it revives the principle and makes it relevant again. As HDD capacity grew, some parameters, such as seek speed, had mechanical limits and couldn’t follow. This created a few issues, which almost rendered RAID 5 useless.

Read more…

Related materials: 

Fault Tolerance and High Availability

Hardware Agnostic and Commodity Hardware

 

1 Star2 Stars3 Stars4 Stars5 Stars (1 votes, average: 4.00 out of 5)
Loading...

Storage Area Network?

Posted by Anton Kolomyeytsev on June 15, 2015

I wonder what people have in heads when they pick up names for their businesses… (more…)

1 Star2 Stars3 Stars4 Stars5 Stars (No Ratings Yet)
Loading...

LACP vs. MPIO on Windows Platform – which one is better in terms of Redundancy and Speed in this case?

Posted by Anton Kolomyeytsev on March 31, 2015

LACP and MPIO solve the same problem in different ways. It would be a safe assumption to say that the results should also be different. This is actually a draft and we have no idea why it got posted. Well, the question still stands and the work is still in progress, so just stay tuned and do not overreact. The post will remain here so that you people don’t get dead links. Let’s see.

Read more…

Related materials:

Microsoft Windows Server 2012 R2: Deduplication, Backup & Primary VM Storage

Fault Tolerance and High Availability

1 Star2 Stars3 Stars4 Stars5 Stars (3 votes, average: 3.67 out of 5)
Loading...

Hyper-V VMs on NFS share? Why hasn’t anyone thought of that earlier? They did, in fact.

Posted by Anton Kolomyeytsev on January 14, 2015

This test has a defined reason – our own curiosity. Basically, we heard that someone presumably managed to store Hyper-V VMs on NFS share. The question really is “If it’s so convenient, why didn’t smart guys think of this in the first place?” We’ve answered it quite easily – they already did and probably got the same result as we did. Here’s how everything turned for us. (more…)

1 Star2 Stars3 Stars4 Stars5 Stars (3 votes, average: 4.00 out of 5)
Loading...

Soft Restart feature – the great idea from Microsoft. It’s a minor convenience to most, but a life-saver to some.

Posted by Anton Kolomyeytsev on December 9, 2014

Soft Restart is a grand feature and it’s a good thing that Microsoft came up with it. The idea itself is a solution for quite a serious problem, which may arise in some cases. You know how a minor, but unplanned issue can cause a chain reaction and crash everything? It happens, so why don’t we make such cases extremely rare? This is a test of Soft Restart in both virtual and physical environments. (more…)

1 Star2 Stars3 Stars4 Stars5 Stars (1 votes, average: 5.00 out of 5)
Loading...

Storage Replica with Microsoft Failover Cluster and Guest VM Cluster role (Windows Server Technical Preview)

Posted by Anton Kolomyeytsev on October 30, 2014

4th Test Scenario – This time we wanted to configure and run Storage Replica in Windows Server Technical Preview, using Guest VM cluster role. Sounds fine and dandy, but in fact everything got interesting right in the middle of the work. Behold the failure – to our mutual surprise. In any case, we’re quite sure that Microsoft people will fix it and in the final release, everything will work as planned. (more…)

1 Star2 Stars3 Stars4 Stars5 Stars (3 votes, average: 4.33 out of 5)
Loading...

Storage Replica with Microsoft Failover Cluster and Clustered Hyper-V VM role (Windows Server Technical Preview)

Posted by Anton Kolomyeytsev on October 29, 2014

3rd Test Scenario – Again we wanted to configure and run Storage Replica in Windows Server Technical Preview, but using Clustered Hyper-V VM role this time. Everything seems to be ok, but check out the next one! (more…)

1 Star2 Stars3 Stars4 Stars5 Stars (3 votes, average: 4.00 out of 5)
Loading...

Got brand new 56 Gb InfiniBand / 40 GbE Ethernet NICs and switch from Mellanox.

Posted by Anton Kolomyeytsev on October 28, 2014

Awesome! Got some new goodies from Mellanox – brand new 40 GbE & InfiniBand gear. We officially love these guys! Stay tuned for new performance tests.
(more…)

1 Star2 Stars3 Stars4 Stars5 Stars (No Ratings Yet)
Loading...

Copyright © StarWind Software Inc., 2009-2015. All rights reserved.