Tape drives – a solution for creating redundant copies of data that are suitable for the separate computers, and large computing centers. The advantage of tape drives is the optimal price / performance ratio (the cost of storing information units minimum). Storage Technology on the tape is very fast read and write information that allows for the rapid exercise of the backup process, not stopping the computer center. Most convenient to use tape libraries and tape drives. For example, a very popular tape libraries, HP. Using RAID, available in servers and enabling rapidly recover data in case of trouble, is not a reliable way to backup. System redundancy RAID helps mostly snivelirovat hardware failures. Wrong rely solely on the use of RAID, as in the case of 'human' errors (eg incorrect operator actions or accountant), the system will not allow to roll back to the time of the error and restore the correct data.
Tape libraries also allow you to store much more information. And she kept on tape cassettes for much longer than hard drives. Such data carriers are not afraid to shock, is resistant to electromagnetic interference and temperature changes, and do not be afraid of many other natural factors. Leaders in the market – Tape Drives HP. Largely due to the interesting price and sales leadership in backup systems.
And users prefer to buy the cartridges from the same manufacturer that bought a tape drive. Function One Button Disaster Recovery (OBDR), created based on the software allows you to restore data in case of accidents with one click. The technology used in OBDR saving data to tape, with the tape drive is bootable, registered in the server's BIOS as CD-ROM. Since the cartridge is loaded the operating system with latest patches, which was correct at the time conservation. An automatic full restoration of the operating system, and then the data. Thus, the technology OBDR gives an opportunity to restore the server for several minutes even for an expert with minimal knowledge of technology. To date, there is a huge choice of backup systems. Basically this tape, using a consistent data organization, and disk drives, providing random access to stored information. Choosing a system for their organization, should take into account such factors as the type of backup and recovery, speed, maximum capacity carrier and the volume of the device as a whole, the cost of equipment and cost of its operation, reliability, etc.
One of the factors that affect the positioning of a website is the internal structure of the same. Andreessen Horowitz: the source for more info. We will detail a guide to follow step by step, to obtain an excellent optimization on-page of our site: 1) keywords in the URL: containing the url keyword to optimize. (For example, if we want to optimize the keyword flower shop online in santiago and is our web site, the url of the page to optimize should be 2) keywords in the domain name: following the previous example, it would be better to hire the florist-online-in-santiago.com domain or floreriaonlineensantiago.com or have multiple domains pointing to the same site. (3) Key words in the Title tag of the page’s code: fundamental is that the title of the page contains the or key words that we’re optimizing. The same length should be between 10 and 60 characters long and should not contain special characters. (4) Keywords in the Description metatag of the code of the page: although it is estimated that Google ignores its content to index a site, it is the description that appears on our site in a search result. It should contain less than 200 characters.
(5) Keywords in the Keywords metatag of the code on the page: it should contain less than 10 words, and each word must appear somewhere in the body of the web page, so that Google does not penalise us for irrelevance of the keyword. (6) Density of the keywords in the text on the page: between 5 and 20% (all key words / total words of the page). (7) Each word density key individually: between 1% and 6% (each keyword / total words of the page). (8) Keywords in H1, H2 and H3 tags: keywords should appear in the body of the page between those tags. (9) Source of keywords: in larger, bold, italic is another of the recommendations. (10) Prominence of keywords: how much further up in the contents of the web page appears, better.
((11) Key words in the tag alt of images 12) key words in links to other pages of the site (anchor text) 13) all internal links on the page should be valid: this tool can be used to check them: 14) Links to external sites: only have links to good external sites. Do not link to links-farms. (15) External Links have to be valid. (16) Less than 100 external links in total. (((17) Domain name extension: in order of most to least status for Google: .gov, .edu, .org, .com, .info 18) each page size: should not exceed 100 KB 19) frequent content updates: Google loves this. ((20) Age of the site: when more old best 21) age of page vs. age of the site: more new pages in sites more old, have a more rapid recognition by Google. If we continue these steps one one, surely we will obtain a better positioning in search engines and thereby have more visits to our website. I hope that useful will be the Guide. To learn more about the topic: positioning web site original author and source of the article.