What Is Cloud Storage?

Cloud storage is a model of online storage (English: Cloud storage), that is, data is stored on multiple virtual servers usually hosted by a third party, rather than a dedicated server. A hosting company operates a large-scale data center, and those who need data storage hosting need to purchase or lease storage space to meet the data storage needs. The data center operator prepares storage virtualized resources at the back end according to the customer's needs and provides them as a storage resource pool. The customer can use this storage resource pool to store files or objects. In fact, these resources may be distributed across numerous server hosts.

Cloud storage

Cloud storage is a kind of online

I believe everyone is right

I. Development of Broadband Networks

Real cloud

Architectural methods are divided into two categories: one is to build through services; the other is to build through software or hardware devices.

Traditional system utilization

Cloud storage provides many features and capabilities designed to meet the storage challenges that accompany the growth of massive inactive data:

· As capacity grows, linearly scale performance and access speed.

· On-demand migration of data stores to distributed physical sites.

· Ensure the high adaptability and self-healing ability of data storage, which can be stored for many years.

· Ensuring privacy and security in a multi-tenant environment.

· Allow users to scale performance and capacity as needed based on policies and service models.

· Changed the storage purchase model, charging only the actual storage costs, rather than charging all storage systems including unused storage capacity.

· End disruptive technology upgrades and

(1) Storage management can be automated and intelligent, all storage resources are integrated together, and customers see a single storage space;

(2) Improved storage efficiency, solved the waste of storage space through virtualization technology, can automatically reallocate data, improve the utilization of storage space, and have load balancing and fault redundancy functions;

(3) Cloud storage can achieve scale effects and elastic expansion, reduce operating costs, and avoid waste of resources;

Problems in the application of cloud storage technology in the field of security

Limited by the characteristics of security video surveillance's own business, surveillance cloud storage is different from existing Internet cloud computing models, such as security users tend to store video information locally, government video surveillance applications are more sensitive, video information privacy issues, Monitoring consumes a lot of network bandwidth.

Cloud storage usually means putting primary or backup data in an uncertain storage pool outside the enterprise, rather than in a local data center or a dedicated remote site. Proponents believe that if cloud storage services are used, enterprises can save investment costs, simplify complex setup and management tasks, and place data in the cloud to facilitate access to data from more places.
Data backup, archiving, and disaster recovery are three possible uses of cloud storage.
"The advent of the cloud is mainly used for any kind of large-scale storage needs of any kind of static type data." "You don't want to store a database in the cloud, but you might want to store a historical copy of your database in the cloud, and Not storing it in expensive SAN or NAS technology. "
"A good approximation is to think of the cloud as cloud storage that can only be used for deferred applications." "Backup, archive, and batch file data can be handled well in the cloud because it can allow a few seconds of delayed response Time. "On the other hand, she pointed out that due to latency, the database and any of its data that is" performance sensitive "are not suitable for cloud storage.
But before moving data to the cloud, whether it's a public or private cloud, users need to solve a more fundamental problem.
"If you go into cloud storage, can you understand where the growth of storage space is out of control, or why is it out of control, and what is the value point when storing a special set of data throughout the end-to-end business process? Just Migrating technology to the cloud is not the best solution. "
Reducing work and costs is one of the main reasons why cloud services are expected to continue to grow over the next few years. According to research firm IDC, 4% of global IT spending is spent on cloud services; by 2012, this proportion will reach 9%. Due to cost and space pressures, data storage is very suitable for cloud solutions; IDC predicts that during this same period, the proportion of cloud storage in cloud service spending will increase from 8% to 13%.

According to the survey results, it was found that 50% of the respondents said that they use the cloud as the main storage method for production data, but a larger number, that is, 63% of IT departments said that they use the cloud as data backup. At the same time, 43% of users use cloud for data archiving.

Enterprises starting to cloud storage, backup and long-term data archiving are usually the best starting points for this conversion, noting that the operating costs of these initial use cases are also easier to see for enterprises adopting cloud storage.

However, many survey respondents stated that one reason for using the cloud for data backup is the market share of cloud storage services, from more traditional products, such as products from CommVault, to cloud gateways, and even the emerging cloud Disaster recovery, such as data protection as a service.

Although more organizations are experimenting with cloud storage, whether it is through backup services, archiving, or using the cloud to save production data, not all companies are beginning to do so. Concerns about security, regulatory compliance, and vendor lock-in around cloud services continue to be the main reasons why some IT departments have not started.

There are many more cloud storage options than ever before. Google's near-line cold storage and data archiving services correspond to Glacier of Amazon Web Services. These two are new businesses that can be considered.

Service model: In the most common case, when you consider cloud storage, you will think of the service products it provides. This model is easy to start and its scalability is almost instantaneous. By definition, you have a backup of offsite data. However, bandwidth is limited, so consider your recovery model. You have to meet the needs of data outside your network.

HW mode: This deployment is behind a firewall and provides better throughput than a public internal network. It is very convenient to purchase an integrated hardware storage solution, and if the manufacturer does a good job of installation / management, it is often accompanied by a rack and stack model. But then you will give up some

Cloud storage can be divided into the following three categories:

1.

In terms of function implementation, the remote file access and file sharing technology has been applied as early as the formation of the Internet. When the Internet first entered China in the last century, manufacturers provided network disk services. Not everyone is familiar with the network virtual disk. At that time, the network disk was more like an SVN or FTP client. After more than ten years of development, the "network disk" that incorporates mobile Internet marketing concepts and new technologies has been packaged into "Cloud storage" has appeared in high profile in front of the public. According to relevant statistics, the number of daily user data additions of domestic cloud storage service providers has reached PB. It can be seen that hundreds of millions of users are moving to their own cloud storage every day. Various files are uploaded and downloaded in the space. In this environment, in addition to network broadband consumption, should we reflect on the future hidden dangers of cloud storage.

Has good compatibility and Xinyun storage supports mainstream models. Including: Windows XP, Windows 7, Android phone, iPhone, IE8 browser, Chrome browser, Firefox browser, etc.

Node configuration

The CPU supports P-State in the ACPI specification, more than 1G of memory, more than 1G of free hard disk space, 100M and above Ethernet, monitor screen resolution of 1024 × 768 and above, using IE 8 and Firefox 4.0 and higher browsers.

In the case of Gigabit network, it can reach 50M transmission speed per second. The single-node data scale reaches 10 million, and the system can operate normally.

Combined with the needs of equal security management, in the design of private cloud storage, the function of encrypting and decrypting the employee's personal private key should also be considered, that is, the files stored by the employee on the enterprise private cloud according to the different levels of work authority should be encrypted and stored. Managers cannot directly obtain the plaintext file from the server database. Only after the client who has distributed the specific key downloads the file, can the transparent restore be completed in the system background.

1.Save costs

In the short and long term, the biggest feature of cloud storage is that it can reduce costs for small businesses. Because if small businesses want to store it on their own servers, they have to buy hardware and software to know how expensive it is. Next, the company must hire professional IT personnel to manage the maintenance of these hardware and software, and also update these equipment and software.

Through cloud storage, server vendors can serve thousands of small and medium-sized enterprises, and can divide the services of different consumer groups. It can afford the cost of a startup having the latest and greatest storage as part of its cost to help startups reduce unnecessary cost budgets. Compared with traditional storage expansion, the cloud storage architecture adopts a parallel expansion method. When customers need to increase capacity, they can purchase servers according to their needs, and simply increase the capacity to achieve capacity expansion: new devices need only install the operating system and cloud storage software After turning on the power and connecting to the network, the cloud storage system can automatically identify and automatically add capacity to the storage pool to complete the expansion. There are no restrictions on capacity expansion.

2. Better backup of local data and can handle daily data offsite

If there is a natural disaster in your office, it is very safe because your data is stored offsite. Even if natural disasters prevent you from accessing data through the Internet, the data still exists. If the problem only occurs in your office or your company, then you can go anywhere and use your notebook to access important data and update data. It keeps you working under harsh conditions.

In the past management of storage systems, managers needed to face different storage devices. Devices from different vendors had different management interfaces, making it difficult for managers to understand the usage status (capacity, load, etc.) of each storage. Heavy. Moreover, traditional storage may cause data loss when the hard disk or storage server is damaged, but cloud storage does not. If the hard disk is broken, the data is automatically migrated to another hard disk, which greatly reduces the workload of the management staff. For cloud storage, no matter how many storage servers, in the eyes of managers, the storage status of each storage server is monitored through a unified management interface, making maintenance simple and easy to operate.

Of course, this does not mean that you should forget to back up your data. Cloud storage provides most companies with the ability to back up their important data and protect personal data.

3.More visits and better competition

Company employees no longer need to access company information through the local network. This allows company employees and even partners to access the data they need anywhere.

Because SMEs don't need to spend tens of millions of dollars to build the latest technologies and applications to create the best systems, cloud storage paves the way for SMEs and large companies to compete. In fact, for many enterprises, cloud storage is more beneficial to small enterprises than large enterprises, because large enterprises have already invested heavily in building their own data storage centers.

Cloud storage has become a trend of future storage development. However, with the development of cloud storage technology, various types of search, application technology and cloud storage applications need to be improved from the perspectives of security, portability and data access.
(1) Security was born from cloud computing. Security has always been one of the most important issues for enterprises to implement cloud computing. Also in cloud storage, security is still the primary consideration. For customers who want to do cloud storage, security is usually the first business and technical consideration. But many users have even higher security requirements for cloud storage than their own architecture can provide. Even so, in the face of such high unrealistic security requirements, many large, trusted cloud storage vendors are struggling to meet their requirements and build data centers that are much more secure than most enterprise data centers. Users can find that cloud storage has fewer security vulnerabilities and higher security links. The level of security that cloud storage can provide is higher than the security level that users' own data centers can provide.
(2) Portability Some users also need to consider data portability when hosting storage. This is generally guaranteed, and solutions provided by some large service providers promise that their data portability is comparable to the best traditional local storage. Some cloud storage combines powerful portable functions to transfer the entire data set to any medium of your choice, even a dedicated storage device.
(3) Performance and availability In the past, some managed storage and remote storage always had the problem of excessively long delays. Similarly, the nature of the Internet poses a serious threat to the availability of services. The latest generation of cloud storage has breakthrough achievements, reflected in the client or local device cache, keeping frequently used data locally, thereby effectively alleviating Internet latency issues. With local caching, these devices can mitigate latency issues even in the most severe network outages. These devices also allow frequently used data to respond as quickly as local storage. Through a local NAS gateway, cloud storage can even mimic the availability, performance, and visibility of terminal NAS devices, while protecting data remotely. With the continuous development of cloud storage technology, manufacturers will continue to work hard to achieve capacity optimization and WAN (Wide Area Network) optimization, so as to minimize the delay of data transmission.
(4) Data Access The existing doubts about cloud storage technology are whether cloud storage can provide sufficient accessibility if large-scale data requests or data recovery operations are performed. In the future technical conditions, you don't need to worry about this. Existing manufacturers can transfer a large amount of data to any type of media and can directly transfer the data to the enterprise. The speed is equivalent to copy and paste operations. In addition, cloud storage vendors can also provide a set of components that mimic cloud addresses on a fully localized system, allowing local NAS gateway devices to continue to operate normally without the need to reset. In the future, if large manufacturers build more regional facilities, data transmission will be faster. In this way, even if the customer's local data has suffered a catastrophic loss, cloud storage vendors can quickly retransmit the data to the customer's data center.

Cloud Security is a new term that has evolved from "cloud computing." The strategy concept of cloud security is: the more users, the more secure each user is, because such a large user group is sufficient to cover every corner of the Internet, as long as a website is linked to a horse or a new Trojan virus appears, Will be intercepted immediately.

"Cloud Security" monitors abnormal software behaviors on the network through a large number of clients on the network, obtains the latest information of Trojans and malicious programs on the Internet, pushes them to the Server for automatic analysis and processing, and then distributes virus and Trojan solutions. To every client.

The core technology of cloud computing system: parallel computing. Parallel computing (ParallelComputing) refers to the process of using multiple computing resources to solve computing problems at the same time. The data processing is completed through the parallel computing cluster, and the processing result is returned to the user.
1. Programming mode;
2. Massive data distribution storage technology;
3. Massive data management technology;
4. Virtualization technology;
5. Cloud computing platform management technology;
6. Information security management technology;

7. Operation and maintenance management technology.

With cloud storage prevailing today, IT professionals need to look at their data centers, cloud computing, cloud storage, and big data with a wider perspective than ever before. These concepts and technologies should not only focus on, but also how to integrate into their current environment It is imminent. IT departments that used to be alone within the organization (such as networking and storage) must now work more closely with each other due to convergence. This has promoted greater collaboration between IT departments, which has brought great benefits to IT organizations, driving performance improvements and cost reductions.

For most IT organizations, scalability is a key metric for internal cloud storage. Although proponents claim that the cloud is very easy to scale and has near-unlimited growth potential, we still need to carefully consider cloud fault tolerance, dynamic expansion, and capacity growth planning. Cloud is not a panacea for data growth. It is a commodity that needs to be effectively managed.

In addition, before implementing cloud storage, we also need to define and understand key performance indicators. In general, we assume that inactive data does not require as high performance as high-level storage. However, other projects in progress, such as e-discovery, may require comparable performance for such data.

Response time and end-user experience must also be coordinated. We must have a service level agreement (SLA) or an operation level agreement (OLA),

And cloud solutions must meet these requirements. Because the data is accessed through the intranet, before implementing cloud storage, you must have a clear understanding of the current network capabilities and capacity, and judge the possible delay. For a specific internal cloud solution, best practice guidance must be incorporated throughout the solution.

When considering new technologies, we need to assess management simplicity and ease of implementation. We often need to rely on existing people who already have work assignments to deploy and implement new technologies.

We need to determine what roles and responsibilities are needed, how those responsibilities are allocated, and how much time it takes. These issues are not purely technical issues, but a process of thinking that helps improve the overall efficiency of existing personnel.

Judging whether cloud storage is right for an organization requires careful consideration. First, we need to analyze data center data to determine how much data can be migrated to the cloud. IT staff must then determine how this data can be migrated to the cloud. The migration of some data is simple, just like the copy process; other data migration may require some form of data migrator to ensure that these data can comply with the set policies after the migration.

Another important consideration is economic viability. External clouds may be suitable for companies that are concerned about existing storage costs and risk-averse, while companies that are more sensitive to the costs and risks of external clouds may choose to deploy internal clouds.

Since an external cloud is actually storage as a service, its cost depends on

The ever-increasing demand for cloud storage capacity poses increasing security issues. So how will companies overcome the security challenges of cloud storage?

As early as 2010, less than 14% of survey respondents on cloud storage usage happily indicated that they are adopting it. However, in most of our recent surveys, we have seen an increase in the number of businesses using cloud storage. For example, in 2012, this number was 30%. In two surveys over the past few months, 44% -48% of companies said they are currently using some kind of cloud storage, so companies storing data in the cloud are on the rise.

In just two years, the development of cloud storage from less than 14 percentage points to this extent is actually quite impressive. The data changes from survey to survey are so broad, but the average data range of 15TB-32TB in the cloud has unexpectedly dropped. Especially the biggest selling point is the flexible and unlimited capacity service set.

From the perspective of these average data, in last spring's "Cloud Storage Purchase Intent" survey, we asked the company how much storage capacity it maintained, including disk, flash, fiber, cloud, tape, cookie code (

Not all application data requires SSD performance. Frequently accessed data can be migrated to disk-based storage. Both SSD and disk-based storage support standard I / O protocols, so there is no need to change applications when moving applications from local hardware to the cloud.

With the included solid state drive or disk drive, you can use any file system supported by your operating system. One disadvantage of this mode is that when the machine instance is shut down, the data on the hard drive is deleted. To save data, it must be copied to another storage system, such as object storage in the cloud.

Another disadvantage of additional storage systems is that they can only be connected to one instance. However, Microsoft Azure has a file storage system that enables SMB-compliant file sharing and can be shared across multiple instances. This is useful when migrating applications to a cloud that requires regular file system services, or when multiple instances need to access the same data.

In other clouds, data sets may be replicated to additional storage devices, and these devices can be connected to other instances. However, this can cause synchronization and consistency issues.

When multiple instances are reading and writing the same data, a database may be the best choice. Every major cloud provider provides relational and non-relational NoSQL databases. If the data storage requirements are clearly defined during the design phase, then a relational database is usually appropriate. If the location of the database schema cannot be known in advance, then a NoSQL database can be selected. ^[1]