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这是我问他们的：
Customer Inquiry
one thing i want know
Why server become slow
Last year was fine, but now it become so slowly
and even that my Website usually won't open
I need an explanation
这是给我的回复：
Our support staff has responded to your request, details of which are described below:
Discussion Notes
Support Staff Response
Dear Sir/Madam,
Thank you for contacting Online Support.
Upon reviewing the account, it appears you are still hosting on one of our legacy hosting accounts and you may want to consider migrating to our newest platform the 4GH platform for better hosting performance.
4GH™ (Fourth-Generation Hosting) is a flexible hosting platform that matches performance with demand. If your site's traffic spikes, 4GH responds by allocating more resources and keeping your site live. If your site starts small, but is growing, 4GH grows with it so you don't have to manually upgrade and experience any unnecessary downtime.
4GH "pools" the resources of many servers and your site's content resides on multiple servers. This networked system helps achieve a high reliability—beyond 99.9%—for your website because if one server shuts down, only a fraction of the total resources are lost.
4GH has resources in reserve which are always available to allocate when necessary.
4GH vs. Shared Hosting
How does it differ from Shared Hosting?
Compared with Shared Hosting, 4GH offers increased availability and scalability. Shared Hosting can handle a limited amount of traffic, beyond which the site becomes unreachable. 4GH responds to traffic spikes by adding additional resources to your site, keeping your site live regardless of traffic.
Due to differences in 4GH, it cannot offer support for some of the technologies that Shared Hosting can:
Access databases are not supported due to Access' locking scheme which prevents concurrent usage from different processes.
Front Page Server Extensions are not currently supported.
Java and ColdFusion are not currently supported.
Concurrent file writes to the same file in multiple sessions or concurrent threads. Example of affected resources: File-based databases and cross session log files (these issues are exaggerated in a 4GH environment due to additional volume).
Storing data within the Application namespace and depending on multiple concurrent sessions accessing accurate data for the entire application.
Static Classes where sessions across the site (application) must have concurrent access to accurate data.
If you want to change your 4GH account's operating system, see Switching Your Hosting Account Operating System.
Can I upgrade an existing plan to 4GH?
Yes. For more information, see Upgrading to 4GH from Shared Hosting below.
Why should I purchase 4GH instead of Shared Hosting?
Other plans require upgrading when you outgrow them. You can't outgrow 4GH — your hosting plan grows as your site grows, automatically.
Using 4GH
Do I need to have server administration experience?
You do not need server administration experience. 4GH is as easy to setup as our Shared Hosting offerings.
Is there a control panel like Parallels Plesk Panel or cPanel?
We offer our own easy-to-use control panel. The control panel is similar to the one we use on our Shared Hosting plans. Some of the features include:
DNS control
Domain management (add multiple domains).
Access to quick-install applications.
Access to database management.
File management tools.
Can I host multiple domains?
Yes.
How far can I really scale?
There is theoretically no limit. We will continue to add servers and bandwidth to meet demand.
Will I be able to monitor the resources I am consuming?
You will be able to monitor bandwidth and disk usage. CPU, memory and page hit monitoring are planned for future releases.
Do I have manual control over my resources?
There are no plans for manual control over resources as the resources automatically adapt to increased demand.
Is my site secure and protected from attacks? Do you offer a firewall?
We do the following to protect your information and maintain superior uptime:
Use best-of-breed equipment for routers, firewalls, and servers.
Offer full network redundancy.
Employ 24x7 dedicated prevention systems to ensure the network perimeter remains secure.
While we keep our hosting environment secure, we cannot protect against weak passwords and vulnerable scripting practices.
Supported by 4GH
Components:
ASP
ASP .NET (1.1, 2.0, 3, 3.5, and 4.0)
ASP .NET AJAX
Python CGI
PHP 4 and 5
MS SQL
MySQL
Perl w/ FASTCGI
Ruby on Rails
Databases:
MySQL
MS SQL
Features:
Secure Certificates
Shell access via SSH
Quick-install applications via Hosting Connections
Not Supported by 4GH
The following are not currently supported, but may be supported in a future release:
Java
ColdFusion
FrontPage Extensions
The following are not supported:
Databases:
Access
Features:
Streaming video
Email hosting — you cannot use your hosting as an email server
Multiple clients, like cPanel's or Parallels Plesk Panel's client configuration — however, 4GH can allow multiple domains' hosting on the same account
Are there limitations to the type of software I can install?
The same limitations that apply to Shared Hosting apply to 4GH.
If you currently use a Shared hosting account, you can migrate it to a 4GH™ account, which offers improved performance. For more information, see 4GH Frequently Asked Questions.
NOTE: When migrating to a 4GH account, you cannot switch your hosting account's operating system. However, after the account migrates, you can switch it.
To Upgrade to 4GH
Log in to your Account Manager.
From the My Products section, click Web Hosting.
Click the domain name you want to use.
Go to the Edit Account Details tab.
From the Plan menu, select the new 4GH plan you want to use.
Click Save Changes.
Complete any necessary purchases.
Please let us know if we can assist you in any other way.
Sincerely,
Daniel P.
Online Support Team
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