Server hard disk you know and do not know

The world officially entered the ZB era in 2010, according to IDC's forecast, by 2020, the world will have a total of 35ZB data volume, compared with 2009, the data volume will increase by 44 times. In March 2012, the Obama administration announced its big data plan and announced its first investment of $200 million. The Ministry of Industry and Information Technology released the Internet of Things "Twelfth Five-Year Plan" to propose information processing technology as one of the four key technological innovation projects —— undoubtedly, we have entered the "big data era", big data It is affecting our lives and changing business and even the government.

Where is such a huge amount of data stored? How to manage, analyze, and archive, and gain more value from it, has become an urgent problem for enterprises to solve. For individuals, we can store data in U disk, mobile hard disk or notebook hard disk, or even personal cloud network disk; for enterprises, if the server and storage device are the core of network data, it is the cornerstone of enterprise business development. Then, the server hard disk is the core data warehouse. All the user data and software are stored here, which shows how important security and stability are to the server hard disk.

At present, the server hard disk is different depending on the port used, mainly SCSI, SAS and SATA, while SATA hard disk is widely used in desktop computer (PC) hard disk, and some low-end servers are also cost-effective. The products that use this type of interface, and the mainstream server equipment on the market, mainly use SCSI and SAS hard disks, and most of them are SAS.

Compared with the PC hard disk, what are the advantages or features of the server hard disk? In summary, there are four main points: the server hard disk data read and write faster, higher reliability, more SCSI or SAS interface and support hot swap technology.

· Faster: The hard disk used by the server is faster, 10,000 rpm or more (such as SAS hard disk: 15000 rpm) and a large write-back cache;

· High reliability: The server hard disk needs 24× it runs 7 hours, and it is subject to repeated reading and writing of large amounts of data. Server hard drive manufacturers use their own unique technology to ensure data security;

· SCSI or SAS interfaces: Servers use disk array cards for greater storage capacity, more flexible array planning, and guaranteed servers Data security and more efficient data throughput;

· Support for hot swapping: Hard disk support Hot swap technology is very important for running servers 24 hours a day. When the server is not down or a certain hard disk is damaged, the hard disk is removed or inserted, and the operating system automatically recognizes the hard disk changes to minimize data loss.

Although the server hard disk has a lot of work in high reliability, it has an absolute advantage over the hard disk used by us. However, like other devices, "hardware failure is inevitable". As the most direct and final data place, hard disk can sometimes be said to be the lifeblood of a company. Especially for R&D and design companies, if data or R&D results are lost due to hard disk damage, it will cause damage to the enterprise. Unpredictable loss. Therefore, it is the best policy for companies to make plans before purchasing products.

Considering the overall cost, the after-sales service of servers, storage, switches and hard drives purchased by enterprises becomes the key to future operation and maintenance, which not only saves costs, but also ensures safe, stable and efficient operation of the platform. Therefore, the purchase of products with good after-sales service is the most effective way to relieve the troubles of IT managers in the later operation and maintenance.

CIO how to purchase servers, storage and other equipment

There are many details of the product after-sales service, so IT managers also need to pay attention. We use a real case (cool disk) to let everyone know where enterprise users should pay attention when purchasing IT equipment such as servers and storage.

Cool Disk: Established in August 2010, the number of registered users after one year of online is more than 10 million. It is the fastest growing personal cloud storage service company in China. Invested by the famous angel investor Xue Manzi, in March 2011, he completed the A round of 5 million US dollars financing, and in October 2011 completed the B round of 20 million US dollars financing.

& nbsp; Cool disk on the server I /O (input and output capabilities) and disk stability requirements are relatively high. At the beginning of the procurement server, we chose a variety of servers and even tried DIY servers based on the type of business. However, we found that Dell server can easily pass the server disk stress test of the same grade and price. After the order is placed, Dell ships quickly, and the machine has been commissioned and sent directly to our designated computer room by Dell professional staff. After the machine went to the machine room, we prepared the machine in three to five minutes through the remote management card and immediately put it into use. ” Cool Disk founder and CEO Gu Zhicheng also pointed out that, for enterprise operation and maintenance, server after-sales service is very important. Because of the uniqueness of cloud storage services, the bad disk rate is slightly higher than other industries. This means that we have a hard drive error every once in a while. If you use a Dell server, Dell can change the disk every day. Dell also has some software-like services, such as remote management cards, which feel very good to use. & rdquo;

As the founder of Cool Disk Gu Zhicheng said, servers, storage and switches, and even hard disk and other network equipment are not once and for all. But after-sales issues still deserve attention. Therefore, the most effective measure for companies to avoid losses is to choose a product provider with good after-sales service.

server hard disk you know and do not know

it comes to hardware failure, loss of business, IT room in addition to the server goes down The common problems such as the error of the hard disk of the server, storage, etc., and the inability to read and write data properly cannot be ignored. The causes of hard disk damage, data cannot be read or lost are as follows:

1. Server device upgrade, replacement of large capacity hard disk, resulting in motherboard mismatch;

2. Hard disk is in Read and write status, server and storage power supply are suddenly interrupted;

3. When the hard disk is in the read/write state, it is subjected to large vibration, causing the head to collide with the disk, causing damage;

4. If the working environment temperature is too high or too low, the clock frequency of the crystal oscillator will change, which will cause the hard disk to be in an abnormal working state and easily damaged.

Enterprise server hard disk damage or data loss, generally the product manufacturer provides hard disk replacement or data recovery services, but the manufacturer does not guarantee that all data of the enterprise hard disk will be restored. Therefore, in addition to good servers and good after-sales, enterprises should also make real-time backup and recovery solutions for data to minimize losses.

In September last year, eNet server channel reporters visited the three major mainstream server vendors DeLL, HP and Lenovo in the domestic market, and visited them from multiple dimensions. The final result showed that Dell provided the best service.

In addition to online support (24 hours * 7 days), telephone support (24 hours * 7 days), mail support and online repair, Dell also provides server extended warranty and "reserved" Hard disk service & rdquo;, make IT builders or managers more assured.

Dell “Retain your hard drive service" Allow users to replace the replacement drive and retain the failed drive under the terms of the expiration date, essentially ensuring the security of the company's data. Its main advantages are:

· Higher security: Enterprise sensitive data and hard drives are still under the control of IT management. Retaining actual ownership of a failed hard drive is an effective way to ensure that classified data, patent data, or sensitive data is safe and reliable.

· Data Full Control: By retaining the failed hard disk internally, the user can decide how and when to process the data according to the actual situation. Tracking a failed hard drive during transportation will no longer be difficult.

· Compliance with regulatory requirements: Helps companies comply with current data privacy regulations and internal company policies by ensuring that sensitive information on the hard drive is secure and reliable.

· Reducing Enterprise Risk: Proper control/disposal of sensitive data can help protect client confidential data or intellectual property from potential exposure threats, thereby reducing the risk of costly civil liability.

Dell server extended warranty program and tariff: 1 year next business day on-site service (400.14 yuan), 2 years next business day on-site service (650.52 yuan); 1 year next business day on-site service +1 Year accident damage protection (470.34 yuan), 2 years next business day on-site service + 2 years accident damage protection (740.61 yuan).

Editor's Language: Data, Methodology for Future Transformation of the Enterprise

Global Data Total Breaks Through ZB, Marking Us Have Entered Big Data In the early days of the era, in the face of explosive growth of massive data, how to capture, manage, analyze and archive high-value data in a reasonable time will become the methodology for the future transformation of enterprises.

Data is the only basis for the future business transformation of enterprises. The stability and security of direct storage media servers and storage hard disks require enterprises to pay more attention to them.