Docker Containers Performance in VMware vSphere

Post by Qasim Ali,  Banit Agrawal, and Davide Bergamasco (thank you)

“Containers without compromise” – This was one of the key messages at VMworld 2014 USA in San Francisco. It was presented in the opening keynote, and then the advantages of running Docker containers inside of virtual machines were discussed in detail in several breakout sessions. These include security/isolation guarantees and also the existing rich set of management functionalities. But some may say, “These benefits don’t come for free: what about the performance overhead of running containers in a VM?”

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vMotion (Huge) Enhancements in vSphere 6

Good Post by Romain Decker (thank you)

My first contact with vMotion goes back to a demo in 2004. I can still remember how the presenter connected to a Windows VM in RDP, launched a movie, migrated the VM to another host and powered off the 1st ESX…and the movie was still running! :)

VMware vSphere live migration, or vMotion, allows you to move an entire running virtual machine from one physical server to another, without downtime.

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Gartner: Top 10 Technology Trends for 2015 IT can’t ignore

Post by Michael Cooney (thank you)

Gartner defines its Strategic Technology Trends as those technologies that have the most potential to drive great change in the enterprise IT arena in the next three years.

Indeed this year’s crop has that potential as trends like software-defined networks and 3D printing take center stage in Gartner’s list.

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HGST Helps ‘Drive’ VMware VSAN

Post by Pedro Hernandez (thank you)

VMware has lined up plenty of industry support for its Virtual SAN (VSAN) software-defined storage platform. Only one company offers a full line of certified enterprise hard disk drives (HDDs) and solid-state drives (SSDs), claims HGST.

VSAN, the EMC’s subsidiary’s first software-defined storage product, officially arrived in March after a six-month beta program. The storage software boasts seamless integration with VMware vSphere, allowing the company’s customers to extend storage virtualization capabilities to their virtualized server environments.

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VMware VVols is coming. Will your storage be ready for it? HP 3PAR StoreServ will be!

Good Post by Eric Siebert (thank you)

After more than three years in development, VMware Virtual Volumes (VVols) storage technology is set to ignite the storage array landscape. VMware VVols represents a major change in the vSphere storage architecture for shared storage arrays. It provides storage with VM-level granularity by introducing a 1:1 mapping of VMs to storage volumes as well as simplifies storage management through automated policy-based management. Prior to VVols, storage arrays primarily integrated with vSphere at a volume/datastore level using VMware’s Virtual Machine File System (VMFS). Moving forward, you can choose to use VMFS or VVols, with VVols offering more advanced capabilities as the preferred option.

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VMware Virtual SAN Operations: Disk Group Management

Post by Rawlinson Rivera (thank you)

This new blog series will focus on Virtual SAN day-to-day operations related tasks and their recommended operating procedures. I will start the series by covering one of the key and most important aspects of Virtual SAN, which is the management of disk groups.

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Facebook stores warm – nearline – data using dedicated disk stress and erasure coding

Good post by Chris Mellor (thank you) over at El Reg

Facebook has ditched RAID and replication for its nearline storage, using distributed erasure coding to isolate what it calls “warm BLOBs” instead.

Translation please:

  • BLOB — Binary Large OBject — Facebook user’s photos, videos, etc.
  • Warm — data that has to be kept and is accessed at a lower rate than hot data, but more than archived or cold data. Typically, it’s more than a week old. Hot BLOBs, of course, are accessed more frequently.
  • Erasure coding — the adding of calculated parity values (Reed-Solomon codes) to a string of bytes, such that the string can be recovered if an error deletes or distorts some of the complete string. Typically more efficient than RAID at protecting data as it uses less space.

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The Physics of Spinning Disk – How We Got To 10 TB

Post by Scott D. Lowe (thank you)

The year is 1956.  Computers are starting to take hold in businesses and IBM recognizes the need for a new kind of data storage.  The company succeeds in creating what is considered to be the world’s first hard drive.  Bigger than a refrigerator and weighing more than a ton, the RAMAC stored a whopping 5 megabytes of data.

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Catching up on Fibre Channel with HP and Brocade

Good post by Calvin Zito (thank you)

One of the conversations I had at the recent Nth Symposium was with AJ Casamento from Brocade.  HP and Brocade have partnered in storage networking for a long time – probably about as long as AJ and I have worked in the industry!

Here’s a summary of what AJ and I discussed:

  • Looking deeper into the storage network stack with Fabric Vision
  • 16Gb Fibre Channel – ideal for low latency and all-flash
  • Optical infrastructure with Clearlink
  • When is the right time to look at Gen5 16Gb FC?

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