Tag Archives: system

NTFS vs. ReFS – How to Decide Which to Use

By now, you’ve likely heard of Microsoft’s relatively recent file system “ReFS”. Introduced with Windows Server 2012, it seeks to exceed NTFS in stability and scalability. Since we typically store the VHDXs for multiple virtual machines in the same volume, it seems as though it pairs well with ReFS. Unfortunately, it did not… in the beginning. Microsoft has continued to improve ReFS in the intervening years. It has gained several features that distanced it from NTFS. With its maturation, should you start using it for Hyper-V? You have much to consider before making that determination.

What is ReFS?

The moniker “ReFS” means “resilient file system”. It includes built-in features to aid against data corruption. Microsoft’s docs site provides a detailed explanation of ReFS and its features. A brief recap:

  • Integrity streams: ReFS uses checksums to check for file corruption.
  • Automatic repair: When ReFS detects problems in a file, it will automatically enact corrective action.
  • Performance improvements: In a few particular conditions, ReFS provides performance benefits over NTFS.
  • Very large volume and file support: ReFS’s upper limits exceed NTFS’s without incurring the same performance hits.
  • Mirror-accelerated parity: Mirror-accelerated parity uses a lot of raw storage space, but it’s very fast and very resilient.
  • Integration with Storage Spaces: Many of ReFS’s features only work to their fullest in conjunction with Storage Spaces.

Before you get excited about some of the earlier points, I need to emphasize one thing: except for capacity limits, ReFS requires Storage Spaces in order to do its best work.

ReFS Benefits for Hyper-V

ReFS has features that accelerate some virtual machine activities.

  • Block cloning: By my reading, block cloning is essentially a form of de-duplication. But, it doesn’t operate as a file system filter or scanner. It doesn’t passively wait for arbitrary data writes or periodically scan the file system for duplicates. Something must actively invoke it against a specific file. Microsoft specifically indicates that it can greatly speed checkpoint merges.
  • Sparse VDL (valid data length): All file systems record the amount of space allocated to a file. ReFS uses VDL to indicate how much of that file has data. So, when you instruct Hyper-V to create a new fixed VHDX on ReFS, it can create the entire file in about the same amount of time as creating a dynamically-expanding VHDX. It will similarly benefit expansion operations on dynamically-expanding VHDXs.

Take a little bit of time to go over these features. Think through their total applications.

ReFS vs. NTFS for Hyper-V: Technical Comparison

With the general explanation out of the way, now you can make a better assessment of the differences. First, check the comparison tables on Microsoft’s ReFS overview page. For typical Hyper-V deployments, most of the differences mean very little. For instance, you probably don’t need quotas on your Hyper-V storage locations. Let’s make a table of our own, scoped more appropriately for Hyper-V:

  • ReFS wins: Really large storage locations and really large VHDXs
  • ReFS wins: Environments with excessively high incidences of created, checkpointed, or merged VHDXs
  • ReFS wins: Storage Space and Storage Spaces Direct deployments
  • NTFS wins: Single-volume deployments
  • NTFS wins (potentially): Mixed-purpose deployments

I think most of these things speak for themselves. The last two probably need a bit more explanation.

Single-Volume Deployments Require NTFS

In this context, I intend “single-volume deployment” to mean installations where you have Hyper-V (including its management operating system) and all VMs on the same volume. You cannot format a boot volume with ReFS, nor can you place a page file on ReFS. Such an installation also does not allow for Storage Spaces or Storage Spaces Direct, so it would miss out on most of ReFS’s capabilities anyway.

Mixed-Purpose Deployments Might Require NTFS

Some of us have the luck to deploy nothing but virtual machines on dedicated storage locations. Not everyone has that. If your Hyper-V storage volume also hosts files for other purposes, you might need to continue with NTFS. Go over the last table near the bottom of the overview page. It shows the properties that you can only find in NTFS. For standard file sharing scenarios, you lose quotas. You may have legacy applications that require NTFS’s extended properties, or short names. In these situations, only NTFS will do.

Note: If you have any alternative, do not use the same host to run non-Hyper-V roles alongside Hyper-V. Microsoft does not support mixing. Similarly, separate Hyper-V VMs onto volumes apart from volumes that hold other file types.

Unexpected ReFS Behavior

The official content goes to some lengths to describe the benefits of ReFS’s integrity streams. It uses checksums to detect file corruption. If it finds problems, it engages in corrective action. On a Storage Spaces volume that uses protective schemes, it has an opportunity to fix the problem. It does that with the volume online, providing a seamless experience. But, what happens when ReFS can’t correct the problem? That’s where you need to pay real attention.

On the overview page, the documentation uses exceptionally vague wording: “ReFS removes the corrupt data from the namespace”. The integrity streams page does worse: “If the attempt is unsuccessful, ReFS will return an error.” While researching this article, I was told of a more troubling activity: ReFS deletes files that it deems unfixable. The comment section at the bottom of that page includes a corroborating report. If you follow that comment thread through, you’ll find an entry from a Microsoft program manager that states:

ReFS deletes files in two scenarios:

  1. ReFS detects Metadata corruption AND there is no way to fix it. Meaning ReFS is not on a Storage Spaces redundant volume where it can fix the corrupted copy.
  2. ReFS detects data corruption AND Integrity Stream is enabled AND there is no way to fix it. Meaning if Integrity Stream is not enabled, the file will be accessible whether data is corrupted or not. If ReFS is running on a mirrored volume using Storage Spaces, the corrupted copy will be automatically fixed.

The upshot: If ReFS decides that a VHDX has sustained unrecoverable damage, it will delete it. It will not ask, nor will it give you any opportunity to try to salvage what you can. If ReFS isn’t backed by Storage Spaces’s redundancy, then it has no way to perform a repair. So, from one perspective, that makes ReFS on non-Storage Spaces look like a very high risk approach. But…

Mind Your Backups!

You should not overlook the severity of the previous section. However, you should not let it scare you away, either. I certainly understand that you might prefer a partially readable VHDX to a deleted one. To that end, you could simply disable integrity streams on your VMs’ files. I also have another suggestion.

Do not neglect your backups! If ReFS deletes a file, retrieve it from backup. If a VHDX goes corrupt on NTFS, retrieve it from backup. With ReFS, at least you know that you have a problem. With NTFS, problems can lurk much longer. No matter your configuration, the only thing you can depend on to protect your data is a solid backup solution.

When to Choose NTFS for Hyper-V

You now have enough information to make an informed decision. These conditions indicate a good condition for NTFS:

  • Configurations that do not use Storage Spaces, such as single-disk or manufacturer RAID. This alone does not make an airtight point; please read the “Mind Your Backups!” section above.
  • Single-volume systems (your host only has a C: volume)
  • Mixed-purpose systems (please reconfigure to separate roles)
  • Storage on hosts older than 2016 — ReFS was not as mature on previous versions. This alone is not an airtight point.
  • Your backup application vendor does not support ReFS
  • If you’re uncertain about ReFS

As time goes on, NTFS will lose favorability over ReFS in Hyper-V deployments. But, that does not mean that NTFS has reached its end. ReFS has staggeringly higher limits, but very few systems use more than a fraction of what NTFS can offer. ReFS does have impressive resilience features, but NTFS also has self-healing powers and you have access to RAID technologies to defend against data corruption.

Microsoft will continue to develop ReFS. They may eventually position it as NTFS’s successor. As of today, they have not done so. It doesn’t look like they’ll do it tomorrow, either. Do not feel pressured to move to ReFS ahead of your comfort level.

When to Choose ReFS for Hyper-V

Some situations make ReFS the clear choice for storing Hyper-V data:

  • Storage Spaces (and Storage Spaces Direct) environments
  • Extremely large volumes
  • Extremely large VHDXs

You might make an additional performance-based argument for ReFS in an environment with a very high churn of VHDX files. However, do not overestimate the impact of those performance enhancements. The most striking difference appears when you create fixed VHDXs. For all other operations, you need to upgrade your hardware to achieve meaningful improvement.

However, I do not want to gloss over the benefit of ReFS for very large volumes. If you have storage volume of a few terabytes and VHDXs of even a few hundred gigabytes, then ReFS will rarely beat NTFS significantly. When you start thinking in terms of hundreds of terabytes, NTFS will likely show bottlenecks. If you need to push higher, then ReFS becomes your only choice.

ReFS really shines when you combine it with Storage Spaces Direct. Its ability to automatically perform a non-disruptive online repair is truly impressive. On the one hand, the odds of disruptive data corruption on modern systems constitute a statistical anomaly. On the other, no one that has suffered through such an event really cares how unlikely it was.

ReFS vs NTFS on Hyper-V Guest File Systems

All of the above deals only with Hyper-V’s storage of virtual machines. What about ReFS in guest operating systems?

To answer that question, we need to go back to ReFS’s strengths. So far, we’ve only thought about it in terms of Hyper-V. Guests have their own conditions and needs. Let’s start by reviewing Microsoft’s ReFS overview. Specifically the following:

“Microsoft has developed NTFS specifically for general-purpose use with a wide range of configurations and workloads, however for customers specially requiring the availability, resiliency, and/or scale that ReFS provides, Microsoft supports ReFS for use under the following configurations and scenarios…”

I added emphasis on the part that I want you to consider. The sentence itself makes you think that they’ll go on to list some usages, but they only list one: “backup target”. The other items on their list only talk about the storage configuration. So, we need to dig back into the sentence and pull out those three descriptors to help us decide: “availability”, “resiliency”, and “scale”. You can toss out the first two right away — you should not focus on storage availability and resiliency inside a VM. That leaves us with “scale”. So, really big volumes and really big files. Remember, that means hundreds of terabytes and up.

For a more accurate decision, read through the feature comparisons. If any application that you want to use inside a guest needs features only found on NTFS, use NTFS. Personally, I still use NTFS inside guests almost exclusively. ReFS needs Storage Spaces to do its best work, and Storage Spaces does its best work at the physical layer.

Combining ReFS with NTFS across Hyper-V Host and Guests

Keep in mind that the file system inside a guest has no bearing on the host’s file system, and vice versa. As far as Hyper-V knows, VHDXs attached to virtual machines are nothing other than a bundle of data blocks. You can use any combination that works.

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Author: Eric Siron

ZF Becomes a Provider of Soft

“In the future, software will have one of the largest impacts on automotive system development and will be one of the key differentiating factors when it comes to realizing higher levels of automated driving functions. We want to help drive this trend forward. The collaboration with Microsoft will enable us to accelerate software integration and delivery significantly. This is important for our customers who appreciate agile collaboration and need short delivery cadences for software updates. Moreover, software will need to be developed when hardware is not yet available,” explained Dr Dirk Walliser, responsible for corporate research and development at ZF. ZF will then combine its enormous know-how as a system developer for the automotive industry with the added advantage of significantly higher speeds for software development.

“Digital capabilities will be key for automotive companies to grow and differentiate from their competition. DevOps empowers development and operations teams to optimize cross-team collaboration across automation, testing, monitoring and continuous delivery using agile methods. Microsoft is providing DevOps capabilities and sharing our experiences with ZF to help them become a software-driven mobility services provider”, said Sanjay Ravi, General Manager, Automotive Industry at Microsoft.

“cubiX”: Chassis of the Future from Code

At CES 2020, ZF will showcase its vision of software development with “cubiX”: It is a software component that gathers sensor information from the entire vehicle and prepares it for an optimized control of active systems in the chassis, steering, brakes and propulsion. Following a vendor-agnostic approach, “cubiX” will support components from ZF as well as third-party components. “cubiX creates networked chassis functions thanks to software: By connecting multiple vehicle systems such as electric power steering, active rear axle steering, the sMOTION active damping system, driveline control and integrated brake control, ‘cubiX’ can optimize the behavior of the car from one central source. This enables a new level of vehicle control and thus can increase safety – for example in unfavorable road conditions or in emergency situations,” said Dr Dirk Walliser. ZF plans to start projects with first customers in 2020 and will offer “cubiX” from 2023 either as part of an overall system or as an individual software component.

ZF at CES 2020

In addition, ZF will present its comprehensive systems for automated and autonomous driving at CES. They comprise sensors, computing power, software and actuators.

For passenger cars, Level 2+ systems pave the way for a safer and more comfortable means of private transportation. New mobility solutions like robo-taxis are designed to safely operate with ZF’s Level 4/5 systems. Additionally, ZF’s innovative integrated safety systems will be on display, like the Safe Human Interaction Cockpit. Innovative software utilizing artificial intelligence to provide new features and further-developed mobility offerings will also be highlighted.

Join ZF in Las Vegas

Press Conference: Monday, January 6, 2020, 8 AM (PST): Mandalay Bay, Lagoon E & F. Alternatively, you can watch the livestream at www.zf.com/CESlive

ZF Booth: LVCC, North Hall, booth 3931

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Author: Microsoft News Center

For Sale – Surface Pro 6 i5 256gb pen, cover, warranty

Selling my surface pro 6 as have switched to a 2-1 for travel.
absolutely fantastic system and I’ve only really used it for Netflix and one note however ran MSSQL and node stuff for development absolutely fine

Includes:
Surface Pro 6 i5 (4 core version) 256gb 8gb
Windows 10 pro upgrade
Type Cover
Surface Pen
Pen Tips
ProCase (perfect fit and holds the pen a
Boxed with charger
Warranty to 2021 (linked to the device)

It’s in very good condition with just some minor marks on the back as you’d expect from normal use.

Collect from devon or Sheffield or I can post RMSD at cost.

77FABDE1-A94E-4333-A19B-E54731F4A555.jpegDE811DF0-F331-4FFA-93B8-4B3205519C6F.jpegB65E1673-6217-4C8C-A076-2D3EC93FA84F.jpegA7D2ED82-3734-4B72-A247-803024B9EE63.jpegB6808DB2-3451-4209-A847-52991883A511.jpeg9A76EA8B-864E-46E6-8F22-ED0C92AD188A.jpeg33C3EE55-2B14-4875-9356-D194ED8C46D2.jpeg

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Author:

CyberX launches partner program in IoT security market

CyberX, a Boston-based company that focuses on IoT and industrial control system cybersecurity, has unveiled a channel partner program.

The company’s Xcelerate program includes technical support, online training, deal registration, not-for-resale software, marketing development funds and a partner portal. The program’s scope encompasses managed service providers (MSPs), systems integrators, consulting firms, distributors, value-added resellers and technology alliance partners.

Service provider partners include Dimension Data, DXC Technology, NTT Security, Tata Consultancy Services and Wipro. Technology partners include IBM, ServiceNow and Splunk. CyberX also partners with industrial automation vendors such as Schneider Electric and Siemens.

CyberX provides a network security and monitoring system that covers IT and operational technology (OT) devices. The company has customers in the energy utilities, chemical and pharmaceutical markets. Vendors such as Cisco have advised channel partners to sell IoT services to OT and line-of-business executives, who direct much of the buying in that market.

The global IoT security market is forecast to grow from $18.82 billion in 2019 to $51.42 billion by 2024, according to BIS Research Inc., a market research company based in Fremont, Calif. The market will grow at a compound annual growth rate of 22.26% during that period, the company said.

The worldwide industrial control systems security market, meanwhile, is projected to grow at a 6.5% compound annual growth rate through 2023, when the market is expected to reach $18.05 billion, according to MarketsandMarkets.

Chart of IoT data breaches and cyberattacks.
IoT security is gaining visibility as threats against IoT devices and applications grow.

Berkshire bid boosts Tech Data deal to $6B

Berkshire Hathaway Inc. launched a competitive bid to acquire Tech Data Corp., compelling suitor Apollo Global Management to sweeten the deal.

Berkshire’s offer surfaced in a Tech Data filing with the Securities and Exchange Commission. When Apollo’s $130/share, $5.4 billion agreement to acquire Tech Data was revealed in November, the deal included a “go shop” provision that allowed the Clearwater, Fla., distributor to entertain alternative proposals until December 9. Hathaway presented a $140/share offer during that period. Apollo responded with a $145/share offer, which has cleared the path for the acquisition to proceed. Apollo’s new offer will boost the acquisition’s value to $6 billion.

Vendors launch cybersecurity integrations

Cybersecurity vendors this week revealed new integrations between their technology and MSP management tools. 

Bitdefender integrated its GravityZone MSP security suite with Datto’s remote monitoring and management (RMM) software. Bitdefender said the integration enables Datto RMM users to automate deployments of Bitdefender antivirus, antimalware and advanced endpoint layers via an OS-agnostic kit.

Meanwhile, Netsurion linked up its EventTracker security operations center service with IT Glue’s documentation platform. The combination lets Netsurion MSPs access reports designed to demonstrate security and compliance posture to clients, Netsurion said.

Barracuda Networks integrated two of its own products: Barracuda Content Shield and the Managed Workplace RMM platform. Barracuda’s RMM users can now tap Content Shield’s cloud-based web filtering and malware protection. 

Other news

  • Atos, an IT services and consulting firm based in Bezos, France, said it signed a distributor deal with Ingram Micro, headquartered in Irvine, Calif. Under the agreement, Atos will provide its cybersecurity offerings, including Atos Evidian identity and access management products, to Ingram Micro’s U.S. channel partners.
  • D&H Distributing, a distributor based in Harrisburg, Pa., has identified five main areas of opportunity for 2020: cloud, commercial audio/visual and collaboration, esports, infrastructure/security and build-to-order compute and storage offerings.
  • KORE, an IoT solutions provider based in Alpharetta, Ga., has acquired Integron, an IoT-oriented MSP. Integron has offices in Rochester, N.Y. and Ulestraten, Netherlands.
  • SolarWinds said its remote monitoring platforms now include cryptographic algorithms for managing Windows systems that meet Federal Information Processing Standard 140-2. SolarWinds RMM and SolarWinds N-central adhere to the federal encryption standard.
  • Veeam Software enhanced its Veeam Accredited Services Partner (VASP) program. New VASP benefits include access to additional dedicated internal resources at Veeam, the company said.
  • Nuspire, a managed security services provider, has hired Lewie Dunsworth as its CEO. Saylor Frase vacated the CEO slot to become chairman of the board. Dunsworth was previously CISO and executive vice president of global security services at Herjavec Group.
  • Managed services automation company BitTitan named James Clifford as its new EMEA sales director.

Market Share is a news roundup published every Friday.

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Author:

For Sale – Surface Pro 6 i5 256gb pen, cover, warranty

Selling my surface pro 6 as have switched to a 2-1 for travel.
absolutely fantastic system and I’ve only really used it for Netflix and one note however ran MSSQL and node stuff for development absolutely fine

Includes:
Surface Pro 6 i5 (4 core version) 256gb 8gb
Windows 10 pro upgrade
Type Cover
Surface Pen
Pen Tips
ProCase (perfect fit and holds the pen a
Boxed with charger
Warranty to 2021 (linked to the device)

It’s in very good condition with just some minor marks on the back as you’d expect from normal use.

Collect from devon or Sheffield or I can post RMSD at cost.

77FABDE1-A94E-4333-A19B-E54731F4A555.jpegDE811DF0-F331-4FFA-93B8-4B3205519C6F.jpegB65E1673-6217-4C8C-A076-2D3EC93FA84F.jpegA7D2ED82-3734-4B72-A247-803024B9EE63.jpegB6808DB2-3451-4209-A847-52991883A511.jpeg9A76EA8B-864E-46E6-8F22-ED0C92AD188A.jpeg33C3EE55-2B14-4875-9356-D194ED8C46D2.jpeg

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Author:

For Sale – Surface Pro 6 i5 256gb pen, cover, warranty

Selling my surface pro 6 as have switched to a 2-1 for travel.
absolutely fantastic system and I’ve only really used it for Netflix and one note however ran MSSQL and node stuff for development absolutely fine

Includes:
Surface Pro 6 i5 (4 core version) 256gb 8gb
Windows 10 pro upgrade
Type Cover
Surface Pen
Pen Tips
ProCase (perfect fit and holds the pen a
Boxed with charger
Warranty to 2021 (linked to the device)

It’s in very good condition with just some minor marks on the back as you’d expect from normal use.

Collect from devon or Sheffield or I can post RMSD at cost.

77FABDE1-A94E-4333-A19B-E54731F4A555.jpegDE811DF0-F331-4FFA-93B8-4B3205519C6F.jpegB65E1673-6217-4C8C-A076-2D3EC93FA84F.jpegA7D2ED82-3734-4B72-A247-803024B9EE63.jpegB6808DB2-3451-4209-A847-52991883A511.jpeg9A76EA8B-864E-46E6-8F22-ED0C92AD188A.jpeg33C3EE55-2B14-4875-9356-D194ED8C46D2.jpeg

Go to Original Article
Author:

For Sale – Surface Pro 6 i5 256gb pen, cover, warranty

Selling my surface pro 6 as have switched to a 2-1 for travel.
absolutely fantastic system and I’ve only really used it for Netflix and one note however ran MSSQL and node stuff for development absolutely fine

Includes:
Surface Pro 6 i5 (4 core version) 256gb 8gb
Windows 10 pro upgrade
Type Cover
Surface Pen
Pen Tips
ProCase (perfect fit and holds the pen a
Boxed with charger
Warranty to 2021 (linked to the device)

It’s in very good condition with just some minor marks on the back as you’d expect from normal use.

Collect from devon or Sheffield or I can post RMSD at cost.

77FABDE1-A94E-4333-A19B-E54731F4A555.jpegDE811DF0-F331-4FFA-93B8-4B3205519C6F.jpegB65E1673-6217-4C8C-A076-2D3EC93FA84F.jpegA7D2ED82-3734-4B72-A247-803024B9EE63.jpegB6808DB2-3451-4209-A847-52991883A511.jpeg9A76EA8B-864E-46E6-8F22-ED0C92AD188A.jpeg33C3EE55-2B14-4875-9356-D194ED8C46D2.jpeg

Go to Original Article
Author:

For Sale – Surface Pro 6 i5 256gb pen, cover, warranty

Selling my surface pro 6 as have switched to a 2-1 for travel.
absolutely fantastic system and I’ve only really used it for Netflix and one note however ran MSSQL and node stuff for development absolutely fine

Includes:
Surface Pro 6 i5 (4 core version) 256gb 8gb
Windows 10 pro upgrade
Type Cover
Surface Pen
Pen Tips
ProCase (perfect fit and holds the pen a
Boxed with charger
Warranty to 2021 (linked to the device)

It’s in very good condition with just some minor marks on the back as you’d expect from normal use.

Collect from devon or Sheffield or I can post RMSD at cost.

77FABDE1-A94E-4333-A19B-E54731F4A555.jpegDE811DF0-F331-4FFA-93B8-4B3205519C6F.jpegB65E1673-6217-4C8C-A076-2D3EC93FA84F.jpegA7D2ED82-3734-4B72-A247-803024B9EE63.jpegB6808DB2-3451-4209-A847-52991883A511.jpeg9A76EA8B-864E-46E6-8F22-ED0C92AD188A.jpeg33C3EE55-2B14-4875-9356-D194ED8C46D2.jpeg

Go to Original Article
Author:

For Sale – Surface Pro 6 i5 256gb pen, cover, warranty

Selling my surface pro 6 as have switched to a 2-1 for travel.
absolutely fantastic system and I’ve only really used it for Netflix and one note however ran MSSQL and node stuff for development absolutely fine

Includes:
Surface Pro 6 i5 (4 core version) 256gb 8gb
Windows 10 pro upgrade
Type Cover
Surface Pen
Pen Tips
ProCase (perfect fit and holds the pen a
Boxed with charger
Warranty to 2021 (linked to the device)

It’s in very good condition with just some minor marks on the back as you’d expect from normal use.

Collect from devon or Sheffield or I can post RMSD at cost.

77FABDE1-A94E-4333-A19B-E54731F4A555.jpegDE811DF0-F331-4FFA-93B8-4B3205519C6F.jpegB65E1673-6217-4C8C-A076-2D3EC93FA84F.jpegA7D2ED82-3734-4B72-A247-803024B9EE63.jpegB6808DB2-3451-4209-A847-52991883A511.jpeg9A76EA8B-864E-46E6-8F22-ED0C92AD188A.jpeg33C3EE55-2B14-4875-9356-D194ED8C46D2.jpeg

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