In Depth
In Depth
Flash storage and solid-state drives (SSDs)
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Pseudo-SLC flash storage: What is it, what’s it good for and what does it cost?
Pseudo-SLC takes MLC, TLC flash and changes data storage at cell level to get better endurance and performance, but it’s mostly aimed at edge applications and is costly Continue Reading
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French TV giant sticks with Dell NAS for channel upgrade
TF1 has the biggest market share in French TV, but plans for more. It has upgraded from Isilon to PowerScale scale-out NAS and saved 42% in energy costs, halving rackspace use Continue Reading
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Storage technology explained: Replication vs snapshots and backup
Are replication and snapshots the same? Can you replace backup with replication or snapshots? We look into the key planks of data protection strategy, including in cloud storage Continue Reading
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Storage technology explained: Flash vs HDD
In this guide, we examine the differences between flash storage and HDD, the rise of NVMe and much denser formats such as QLC, and whether or not flash will vanquish HDD in the all-flash datacentre Continue Reading
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Storage suppliers’ market share and strategy 2023
We look at the top suppliers in data storage by market share and run the rule over their storage offer, strategies for hybrid cloud, containerisation and as-you-go purchasing Continue Reading
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On-prem vs cloud storage: Four decisions about data location
Hybrid cloud is now a reality. But how to decide what data goes where? We highlight four key decision points to evaluate whether data should be stored on-premise or in the cloud Continue Reading
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Pure Storage: Flash ‘startup’ that brings late entrant advantage
Storage profile: We look at Pure Storage, the youngest of the array makers, which comes to market with well-developed flash, hybrid cloud and consumption purchasing models Continue Reading
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ERP’s storage requirements and options in the cloud
We look under the hood at ERP and its databases, the storage needed to support ERP’s I/O requirements, block, file and object storage and ERP in an era of hybrid cloud Continue Reading
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Dell EMC: Storage giant shifts gear to cloud operating models
Storage profile: We look at Dell EMC, the result of the biggest tech acquisition ever, and find a company well set for ubiquitous cloud operating models and as-a-service Continue Reading
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The all-flash datacentre: Mirage or imminent reality?
Some say disk is dead and we’re on the cusp of the all-flash datacentre. But when will flash capacity and cost hit a point where it is suited to more than just high-tier storage? Continue Reading
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DPU 101: What are DPUs, what do they do, and who supplies them?
We look at data processing units, the latest in a line of hardware offload devices that emerged in the era of composable infrastructure. They come as hardware and even in the cloud Continue Reading
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NetApp: NAS pioneer well set for the cloud revolution
In this storage profile, we look at NetApp, which built a reputation in file access storage but seems to be set fair to navigate a future of hybrid cloud, cloud-native and containerisation Continue Reading
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Will computational storage meet data processing demands?
Computational storage promises performance for workloads that can benefit from dedicated oomph, but it’s not a cure-all. It may come at a cost, and with added application complexity Continue Reading
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Cloud NAS, what is it good for?
We look at NAS file access storage, how it works, what it’s good for and the possibilities to access storage for files and unstructured data in the public cloud Continue Reading
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IBM reorients to offset historic storage hardware decline
Storage profile: We look at IBM and the strategic shifts it has made towards the cloud, cloud-native and as-a-service offerings that aim to reverse a long-term decline in revenues Continue Reading
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CXL in the datacentre: Boosting memory for hungry workloads
We look at CXL, how it revolutionises connectivity between memory components, potentially saves energy, and adds oomph to heavily memory-dependent workloads such as AI analytics Continue Reading
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HPE storage comes with full IT stack, hybrid cloud and as a service
Storage profile: We look at HPE, its Alletra storage refresh, and Greenlake and the ways the company is re-branding as a full-stack provider across on-prem and hybrid cloud Continue Reading
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Huawei a big storage hitter despite international troubles
Huawei is a leading storage player with an enterprise product offer across file, block and object storage, and the cloud, despite controversy and trading difficulties Continue Reading
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Hitachi Vantara: Small part of a big corp and analytics focus
We look at Hitachi Vantara, its storage, its cloud offer, the workloads it targets, and its efforts in containerisation and consumption models of storage purchasing Continue Reading
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Pure Storage: HDDs dead by 2028 and our flash will replace it
Pure Storage says spinning disk is doomed, and only it can provide a replacement. We look at the rationale behind its bold message, and the possible impacts of such a scenario Continue Reading
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Software-defined storage: What it is and variants available
SDS is available in numerous variants. It is usually cheaper, flexible to deploy and brings storage efficiencies, but there are pitfalls in complexity, management and performance Continue Reading
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PLC flash: The next generation or a mirage?
PLC could be productised within two years, but chip makers might not think it worth the effort. Will managing multiple voltages be more hassle than adding layers to existing flash? Continue Reading
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HDD specs: Assess SATA vs SAS, sustained data rates and block size
In part two of a two-part series, we look at sustained data rates in hard disk drive specs, SATA versus SAS, drive security, and how HDD makers pack density into products by shingling Continue Reading
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HDD specs: Assess MTTF, AFR and UER to get the drives you need
In part one of a two-part series, we look at key hard disk drive specs, including mean time to failure, annual failure rate and unrecoverable error rate, and how they relate to each other Continue Reading
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Vast Data’s ‘Act 2’ builds data management layer on QLC flash
Vast Data offers QLC flash bulk storage with a rapid cache I/O layer. Now, it has embarked on offering big data, analytics and application access to highly available data stores Continue Reading
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QLC edges into mainstream, but what are its advantages?
QLC flash offers high density but has lifecycle limitations. But what does it really cost compared with TLC and MLC, and how are suppliers implementing it and getting around durability issues? Continue Reading
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Unstructured data and the storage it needs
We look at unstructured and semi-structured data and find increasing amounts of production workloads that have their own storage hardware – file and object – needs, including flash Continue Reading
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Green storage: Savings to be made but tricky to achieve
Storage upgrades can bring energy savings. New hardware, the cloud and as-a-service procurement models all cut costs, but can need careful tweaking to get right Continue Reading
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Storage hardware shortage causes and how to mitigate them
We look at the IT supply chain shortages that have hit data storage equipment, their causes and what organisations can do to work more smartly to mitigate them Continue Reading
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Top 10 storage and backup customer stories of 2022
Here are Computer Weekly’s top 10 storage and backup customer stories of 2022 Continue Reading
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From capex to opex: Storage procurement options bloom
We look at the growing list of possibilities when it comes to paying for storage infrastructure, ranging from upfront purchases with upgrades to pure pay-as-you-go options Continue Reading
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The next decade in enterprise backup
Backup set to adapt to deliver more security, ransomware protection and flash-speed restores, and deal with the complexity of multi-, hybrid cloud and container-based operations Continue Reading
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Is object storage good for databases?
We look at object storage vs block access SAN storage and ask if object storage can be used for database workloads, or is it just good for bulk storage of analytics datasets? Continue Reading
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Edge storage: What it is and the technologies it uses
Storage is moving from the datacentre to the edge. We define edge storage, look at the characteristics of edge computing that shape it and the technologies it requires Continue Reading
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Bfloat16: What it is and how it impacts storage
Bfloat16 is an emerging way to handle very large numbers, developed by Google for its machine and neural learning and prediction. We look at what it means for IT and storage Continue Reading
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Huawei sets out its stall for a data-rich world
Businesses need to harness data effectively while keeping carbon emissions down. We see how Huawei is setting out to cope with the strains put on organisations, while mitigating the environmental impact Continue Reading
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Data gravity: What is it and how to manage it
Data gravity can attract increasing amounts of data, and brings with it onerous management overheads. We look at how to mitigate data gravity in datacentre and cloud Continue Reading
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Unified file and object storage: Three suppliers and their approaches
We look at unified file and object storage products from NetApp, Pure Storage and Scality, the differences, the workloads aimed at, and how unified they actually are Continue Reading
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Storage requirements for AI, ML and analytics in 2022
We look at what is needed for artificial intelligence and machine learning, and the pros and cons of block, file and object storage to store and access very large amounts of often unstructured data Continue Reading
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Storage suppliers put Kubernetes platforms centre stage
How to orchestrate the orchestrator? Storage suppliers’ Kubernetes management platforms aim to meet storage and data protection challenge in containerised application environments Continue Reading
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Storage and 5G: Big impacts likely as wide-area topologies evolve
Enterprise 5G will boost the need for storage generally. It will also push capacity needs closer to the edge and create new locations for processing and storage Continue Reading
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Posix vs object storage: How much longer for Posix?
We look at Posix compliance in storage and why it is being challenged by object storage and the need to scale much further than Posix-oriented storage was ever intended to Continue Reading
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How open source is shaping data storage management
Open source data storage offers a great deal of flexibility, but unlocking its benefits will require strong technical resources to meet requirements such as stability, high availability and security Continue Reading
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EDSFF brings built-for-NVMe connectivity to the datacentre
Aimed at enterprise use cases, EDSFF offers incredible flash density in shared storage and hyperscale deployments, but storage products that use it are still thin on the ground Continue Reading
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Scale-up vs scale-out: Horizontal vs vertical scaling for storage
We look at the differences between scale-up and scale-out in storage – or horizontal vs vertical scaling – and the key ways it can be carried out on-prem and in the cloud Continue Reading
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Edge storage: Four key points
Edge storage is driven by rapidly emerging edge computing and data gathering use cases. We look at why it makes sense to store data at the edge and the key challenges involved Continue Reading
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Five ways the hyper-converged infrastructure market is changing
We look at changes in the hyper-converged infrastructure market as suppliers go cool, go soft, disaggregate HCI nodes, provide as-a-service options and look to containers Continue Reading
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APAC expert guide to storage management
In this expert guide to storage management in Asia-Pacific, we unpack the developments shaping storage management and key strategies to extract business value from data Continue Reading
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NVMe-over-fabrics: Five need-to-knows
We look at five need-to-knows about NVMe-over-fabrics, such as its implementations – RDMA, Fibre Channel and TCP – use cases, hardware and operating system support Continue Reading
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HDD support and Zoned Namespaces: Key takeaways about NVMe 2.0
We look at new capabilities in the most recent iteration of the NVMe flash storage standard Continue Reading
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Dell, NetApp and Pure: Healthy results on Covid easing
Dell’s still top of the storage supplier pile with midrange arrays doing well, but meanwhile NetApp and Pure are making gains on the rise of public cloud Continue Reading
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DNA storage promises 10 million times storage capacity boost
A datacentre that fits in the palm of your hand? However, right now, DNA storage is an expensive chemical process that researchers are trying to make a practical proposal Continue Reading
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Storage-as-a-service: Consumption models from the big six
We look at the big six storage makers’ consumption model offers, which allow customers to pay for on-prem hardware and cloud storage capacity on a pay-per-use basis, within limits Continue Reading
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Briefing: Cloud storage performance metrics
We look at some of the key storage performance metrics that determine what your applications will get from cloud storage, plus cloud essentials that are beyond simple measurement Continue Reading
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Five things you need to know about NVMe over Fabrics
We look at NVMe-oF, which extends fast flash across the network – what it is, how it works, use cases, benefits and limitations, and the suppliers of NVMe-oF products Continue Reading
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Storage performance metrics: Five key areas to look at
We look at the essentials in storage performance metrics: capacity, throughput and read/write capability, IOPS and latency, and hardware longevity measured by failure rates Continue Reading
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What digital transformation means for data storage
We survey the key planks of digital transformation and look at the storage technologies emerging to support it, such as NVMe and QLC flash, hyper-converged infrastructure and cloud storage Continue Reading
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Container-native storage: A definition, and what to ask suppliers
We look at container-native storage – aka cloud-native storage – what defines it, and its benefits as a way of bringing persistent Kubernetes storage to containerised applications Continue Reading
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Computational storage: What is it? Why now, what for, who from?
Computational storage is an emerging architecture category, in which compute is put near storage to address I/O bottlenecks resulting from large volumes of data Continue Reading
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Five reasons to look at hyper-converged infrastructure
HCI promises easy setup, purchasing flexibility, low procurement and operation costs, reliability and all in one box – but there are challenges too Continue Reading
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Where now for storage? Hitachi, IBM and Pure Storage
Part II: Storage supplier strategy in the cloud era: Hitachi, IBM and Pure Storage. We snapshot the big six hardware makers, as they take things to the cloud and as-a-service models Continue Reading
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Where now for storage? Dell EMC, NetApp and HPE
Part I: Storage supplier strategy in the cloud era: Dell EMC, NetApp and HPE. We snapshot the big six hardware makers, as they take things to the cloud and as-a-service models Continue Reading
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QLC flash storage: What it costs and its best use cases
QLC flash brings high capacities at costs coming down close to spinning disk. So what are the use cases for QLC solid state, which make best use of its relatively low endurance Continue Reading
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RAID, flash and erasure coding: What works best with solid state?
We look at RAID and flash to highlight key choices when it comes to drive data protection. What RAID levels work best with solid state and when is erasure coding a good choice? Continue Reading
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IP surveillance: The storage it needs, on-premise and in the cloud
Surveillance is changing, with the evolution from simple streams of sequential images to the application of AI to video, as well as an increasing move to use of the cloud Continue Reading
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Brain researchers get NVMe-over-RoCE for super-fast HPC storage
French neurological researchers deploy Western Digital OpenFlex NVMe array for super-fast HPC storage with Ethernet-based NVMe-over-Fabrics connectivity across several floors Continue Reading
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Intel Optane Persistent Memory aims to fill the gap DRAM can’t
We look at Optane and its PMem product that Intel believes will fill a big gap between memory and storage that DRAM technology just cannot deal with Continue Reading
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Spinning disk hard drives: Good value for many use cases
When it comes to storage media, all talk is of flash, but there are plenty of use cases where – far less costly – spinning disk can do a perfectly adequate job in the enterprise Continue Reading
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NVMe-over Fabrics: How NVMe-oF revolutionises shared storage
NVMe brought super-fast flash storage to the datacentre, but it needs NVMe-oF to allow it to bring the benefits of rapid access and low latency to SAN and NAS shared storage Continue Reading
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A peek into the future of storage
Flash-based storage is here to stay and will continue to be enhanced, even as helium and DNA are being primed for use in the distant future Continue Reading
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Storage analytics: How AI helps storage management
We look at storage analytics products that measure key metrics in storage hardware, single-vendor and multi-vendor tools, and how AI-based storage management and AIOps is emerging Continue Reading
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Five on-premise and cloud options for network-attached storage
We look at five options for file access storage, from ‘traditional’ NAS in a standalone appliance to distributed hybrid cloud file storage and NAS cloud gateways Continue Reading
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Storage pros and cons: Block vs file vs object storage
Despite the many changes in storage, there are still some fundamentals that hold true. We look at the key defining characteristics and use cases of block, file and object storage Continue Reading
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Drive to improve flash reliability
Due to its limited write cycles, flash-based storage can corrupt data. Computer Weekly looks at how flash reliability is being addressed Continue Reading
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Decision points in storage for artificial intelligence, machine learning and big data
Artificial intelligence and machine learning storage is not one-size-fits-all. Analytics work differs, and has varied storage requirements for capacity, latency, throughput and IOPS. We look at key decision points Continue Reading
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Cloud flash storage: SSD options from AWS, Azure and GCP
We look at the flash storage options available from the big three cloud providers – Amazon Web Services, Microsoft Azure and Google Cloud Platform – that can help narrow the gap between on-site and cloud workloads Continue Reading
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Cloud storage 101: NAS file storage on AWS, Azure and GCP
We look at NAS file storage options in AWS, Azure and Google Cloud. All three offer native-based and NetApp-based file storage, with Azure adding single namespace cache services Continue Reading
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Mainframe storage: Three players in a market that’s here to stay
Far from disappearing, the mainframe market and the storage it needs is here to stay for some time. The three key array makers compete with high-end flash-equipped products Continue Reading
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High-performance object storage: What’s driving it?
Object storage is getting its performance on to meet the needs of content delivery, analytics and IoT use cases while enabled by rapid flash storage media and other tech advances Continue Reading
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Computational storage: What is it and what are its key use cases?
Computational storage brings the CPU to the storage and so boosts system performance by tackling processing tasks, such as near the edge or in AI/machine learning workloads Continue Reading
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How Oxeva delivered budget analytics with Pure Storage flash NAS
Web hosting provider Oxeva thought the consultants were mistaken and that what suited the web giants for analytics/big data wasn’t necessarily what was needed for enterprise customers Continue Reading
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Cache vs tier: What’s the difference between cache and storage?
We look at the key distinctions between cache and tiers of storage, and where the line has become blurred with fast flash, 3D Xpoint and storage class memory technologies Continue Reading
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Flash storage tiers: Performance, cost and use cases
We look at performance, cost and potential use cases for the key flash storage types available, such as Nand flash, 3D Xpoint and Intel Optane, plus SAS, SATA and NVMe connectivity Continue Reading
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Caribbean island hospital rebuilds after hurricane with DataCore
Hurricane Irma tore the roof off a server room and flooded IT hardware, but that was an opportunity to rebuild redundant IT using DataCore’s SANsymphony software-defined storage Continue Reading
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Big storage meets cloud in the datacentre 'as-a-service' revolution
Cloud is mainstream but the datacentre’s here to stay. This has resulted in a trend towards as-a-service in the datacentre where big storage array makers and the cloud giants meet Continue Reading
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Top 10 storage deployment stories of 2019
Here are ComputerWeekly’s top 10 storage deployment stories for 2019, which see quite a move away from traditional SAN and NAS to hyper-converged, software-defined storage and object storage Continue Reading
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Figeac Aero manages growth with DataCore software-defined storage
Global roll-out sees DataCore software-defined storage deployed on Huawei hardware to HQ and 14 worldwide sites as aero parts maker copes with acquisition and expansion Continue Reading
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NVMe-over-TCP brings super-fast flash over standard IP networks
TCP is the latest transport protocol that can be used to connect NVMe flash storage. We explain how NVMe-over-TCP works and the key advantages for datacentre customers Continue Reading
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What is QLC flash and what workloads it is good for?
QLC flash offers low per-gigabyte costs and lots of capacity, but can be limited by endurance and I/O performance. It can be a good disk replacement for several workloads, however Continue Reading
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Is NVMe flash the right choice for you?
NVMe flash storage boosts performance for I/O-hungry operations, but how does it work, where can organisations best deploy it, and what are the key uses cases where it can make a difference? Continue Reading
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Storage and DevOps: What is required for agile development?
DevOps brings continuous and agile application. Storage has to fit in and make itself just as responsive to development that does away with the inertia of stifling hierarchies Continue Reading
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How APAC firms can slay the storage management beast
The data deluge and compliance requirements are shaping how Asia-Pacific firms are approaching storage management issues in the age of cloud Continue Reading
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How to deploy NVMe flash storage for artificial intelligence
We run the rule over NVMe flash as a storage choice for AI applications and the key decision points in form factor and hardware specification Continue Reading
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Hop jumps to Pure Storage to avoid big storage complexity
Air France short-haul and regional brand Hop jumps to Pure Storage after coming up against Dell EMC, NetApp and HPE, which all tried to sell it solutions ill-suited to its needs Continue Reading
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Docker backup: Deciding what to protect and how
Docker is a simplified form of virtualisation whose popularity has rocketed. We look at the key decisions about what parts of Docker you need to backup and how to do it Continue Reading
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SAN vs NAS vs hyper-converged for virtual machine storage
The pros and cons of file and block access storage arrays vs the new breed of all-in-one server/storage architecture for storage of virtual machine systems and data Continue Reading
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Software-defined storage vs NAS/SAN: What are the options?
We look at the pros and cons of software-defined storage and weigh up when it’s a better option than buying NAS and SAN pre-built hardware shared storage arrays Continue Reading
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APAC buyer’s guide to NVMe storage
NVMe storage is becoming popular among Asia-Pacific enterprises that want to reduce latency and speed up application performance Continue Reading
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Scale-out NAS: File storage with cloud and flash from big five
We run the rule over scale-out NAS from the big five storage array makers to find all-flash and hybrid-flash commonplace and use of the cloud as a tier almost ubiquitous Continue Reading
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Enterprise and midrange SAN survey 2019: Hitachi, IBM and NetApp
Part two of two: While all-flash is mainstream, NVMe is an option as disk replacement for most suppliers, while NetApp leads the way with NVMe end-to-end to hosts Continue Reading