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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Fabric Security

Post bc Erwin van Londen (thank you)

This topic is hardly ever touched when fabric designs are developed and discussed among storage engineers but for me this always sits on my TODO list before hooking up any HBA or array port. It is as important in the storage world as it has been in the IP networking sector for decades. Historically the reasoning to not pay attention to this topic was that the SAN was always deeply embedded in tightly controlled data-centres with strict access policies. Additionally the use of fibre-optics and relatively complex architectures to the storage un-inaugurated even more, unfairly, devalued the necessity of implementing security policies.

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Interleave Archival Media Testing for LTO-6 Ultrium Data Cartridges

Post by Andrew Dodd (thank you)

Not just one extra mile, but hundreds

You probably know that some of the world’s biggest companies use HP StoreEver Tape as a major component of their archiving and long-term asset preservation strategy. This archiving role means the traditional usage model for HP tape media has changed. And consequently, how HP tests its LTO media for performance and reliability needs to change also.

Archiving brings new challenges for HP Storage Media

Today, customers are using so-called “green tape” media – brand new media that has never been used previously – for a larger part of their tape operations. This creates different challenges for the media, as well as the host tape device, primarily because of the higher abrasivity of green tape.

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Which All-flash Architecture do you prefer?

Good post by George Crump (thank you)

The title of this entry, “Which All-flash Architecture Do You Prefer?”, was actually a question asked on the LinkedIn group, “Storage: SAN, NAS“, a couple of days ago. It was in response to a recent post by Calvin Zito @HPStorageGuy that was also discussing the importance of good architecture design. It was a great question that I responded to right away and below is a more organized version of my response.

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DR options of VMware vSphere Data Protection (VDP)

Post by Vladan Seget (thank you)

In the past I have received few questions on VDP resiliency. Users usually like the “appliance” approach when it comes to backup software, but they want to be sure that they can take steps to get back in business if something gets wrong. Many things can happen to a VM don’t you think?

In addition, if you’re running your vCenter as a VM, I’ll also discuss an option when even if vCenter is unavailable, you can still use VDP to restore a VM from the backup repository.

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