Bluehost和Powweb在美國虛擬主機市場中都占有一定的份額，Powweb以其價格的低廉獲得了大量客戶的認可；而在商務網站功能上，我們認為Bluehost還是有相當強的競爭力。讓我們一起來看看Bluehost在其主頁上的和Powweb詳細比較。雖然Powweb在配置上遜於Bluehost可一年5.77$/mo價格想比較于Bluehost還是有一定競爭力。

服務器環境
PowWeb	Debian GNU/Linux 3.1 – Apache PHP/4.4.4 MySQL/4.1.14
Bluehost	CentOS4 – Apache/1.3.37 (Unix) mod_fastcgi/2.4.2 mod_auth_passthrough/1.8 mod_log_bytes/1.2 mod_bwlimited/1.4 FrontPage/5.0.2.2635.SR1.2 mod_ssl/2.8.28 OpenSSL/0.9.7a PHP-CGI/0.1b. PHP/5.1.6
Why this Counts	服務器環境是網站穩定有效運行的保證. 也是服務器是否安全的重要關鍵條件, 也是一個服務器是否安全，是否容易被黑客入侵的重要參數。（一般來說，采用環境參數越高就越安全，美國虛擬主機評測導購網）

Script 安全
PowWeb	PowWeb’s scripts run as wwwuser:www.
Bluehost	Bluehost’s scripts run using user:user based permissions, which means your scripts and files are as secure as Linux itself.
Why this Counts	The user:group permissions running for an individual script tell us just how secure that server really is. Ideally, you want your server to use user based permissions to keep hacking attempts to a minimum..(確實Bluehost做的更充分,美國虛擬主機評測導購網）

內存大小
PowWeb	PowWeb’s servers have 3 Gigabytes of memory available.（powweb配置屬於中等水平）
Bluehost	Bluehost servers are equipped with between 4 and 8 Gigabytes of RAM.
Why this Counts	As with processing power, a server’s memory is critical to the performance of your website. The lower the memory, the less the server can handle.

SSH Access
PowWeb	Unfortunately, PowWeb does not offer SSH access to it’s clients.
Bluehost	Bluehost offers SSH free of charge on all accounts.
Why this Counts	SSH (Secure SHell) is a command line level of access to the server. It’s uses stretch past the standard control panel, and allow a special level of access to databases, Python interpreters, and much much more. This extra level of access makes many hosts skittish, and most won’t take the extra precautions necessary to offer the service..(不可否認，有SSH總比沒有好^_^）

獨立 IP
PowWeb	Unfortunately, Dedicated IPs are not available for any cost through PowWeb.（不提供獨立IP服務）
Bluehost	Bluehost offers Dedicated IPs for all accounts at $30/year.
Why this Counts	獨立IP有很多好處. 顯著的好處有：許多搜索引擎將給具有獨立IP地址的網站更高的分數譬如Goolge Pr的分數也是如此. 獨立IP地址也是你購買使用SSL的必要條件，也是經濟商務網站必要選擇 （30$/year的價位還算可以，美國虛擬主機評測導購網）

備份回覆
PowWeb	PowWeb does not charge a fee to restore account backups..（Powweb的備份系統也是相當不錯）
Bluehost	Bluehost does not charge any fee for restoring backups. What’s more, backups are taken and kept daily, weekly, and monthly for maximum protection against data loss.
Why this Counts	Your data is the one thing that’s specific to you on the internet. It’s value can be incalculable, and losing any portion can be catastrophic. However, most web hosts will actually charge you to restore your own data, whether or not it’s your fault the data was lost in the first place. This provides an extra dime, but is absolutely ridiculous from our principled standpoint.

域名注冊
PowWeb	PowWeb is a reseller for Tucows.com. Domains are a bit difficult to manage for anyone but expert users. Standard .com domains are $15 per year, and domain privacy will cost you an additional $8.99 per year.（Powweb的價格還是貴了點）
Bluehost	Bluehost utilizes FastDomain to register and control domain names, a company we created to offer superior control and service. Additional domains are $10/year. Domain Privacy is offered free of charge.（Bluehost的域名得益于Fastdomain的域名注冊服務）
Why this Counts	You pay a yearly fee to hold on to your domain name. You should also have the ability to modify and control it as you please. Every web host has a registrar, but not all registrars are created equal. Many do not give you the control or access you need to do what you want with your site.（確實如此，很多虛擬主機.提供的域名注冊服務都是第一年免費而續費的時候將收費且價格往往高於市場價，而Fastdomain虛擬主機提供的是完全永遠免費的域名，當然同為一家的Bluehost和Hostmonster也是如此）

控制面板
PowWeb	PowWeb programmed their own control panel dubbed OPS. It offers a good amount of control over an account, and is constantly being updated.（Powweb的控制面板也是相當容易上手的）
Bluehost	Bluehost uses cPanel, an industry standard in hosting backend control technology.
Why this Counts	Your control panel is like your car dashboard. You have control, you get feedback, or you get isolated. The control panel you use should be capable of handling what ever you throw at it, and it is important that you take it out for a test drive before you buy. （目前都是采用的Cpanel11，非常易用且為主流控制面板,美國虛擬主機評測導購網）

額外的環境
PowWeb	PowWeb offers a unique (custom) auto installation utility called InstallCentral, which is equipped with a whopping 41 scripts, all free to use. However, to use these scripts, you must first enable cgi/php on your account, which can take up to 24 hours for the servers to ‘refresh’.
Bluehost	Bluehost offers Fantastico, an auto installation utility with over 35 scripts available for instant usability. A formmail script and several others are available as well.
Why this Counts	Extras are the whipped topping and cherries on a nice, cold sundae. They entail pre-made scripts that professional programmers have made available free of charge, so that you can have a good looking, functional website at the click of a button. Unfortunately, not all hosts are well equipped, so if you don’t know exactly what you want yet, or how to program it, you’ll want a host that can offer these extras.

MySQL
PowWeb	PowWeb offers 75 databases on it’s ‘OnePlan’.
Bluehost	Bluehost offers 50 MySQL databases with the main plan.
Why this Counts	Databases are the core of any interactive website. They contain product catalogs, blog entries, customer information, and the list goes on. The more you have available, the more you can do.（Powweb和Bluehost提供的數量差不多）

可建站點（附加域名個數)
PowWeb	Unfortunately, PowWeb does not offer the ability to house addon domains on any account.
Bluehost	Bluehost now offers Unlimited addon domains on every account.
Why this Counts	Addon domains offer the ability to host more than one domain name on your hosting account. These could be family websites, aliases of your main domain, or completely separate business entities. The ability to house these additional domains can maximize the cost effectiveness of your web experience.

子域名
PowWeb	PowWeb offers unlimited subdomains.
Bluehost	Bluehost offers Unlimited subdomains on every account.
Why this Counts	Subdomains are extensions of your domain. Without subdomains, del.icio.us would be just icio.us, which no one would ever remember. These can take the form of whatever you like, such as mail.yourdomain.com or office.yourcompany.com.

可建立的Email帳戶
PowWeb	As PowWeb does not offer addon domains, they also do not offer the ability to have email accounts attached to them.
Bluehost	Bluehost’s control panel offers the ability to have email accounts on your addon and subdomains.
Why this Counts	Oddly enough, some control panels do not give you the ability to create or use email accounts on your additional domains. This severely limits use of your domains for any useful purpose, such as business transactions. Be sure to know what you need before you buy…

SSL 證書使用
PowWeb	Unfortunately, private SSL certificates are impossible to come by on PowWeb’s servers due to the specific server configuration they use. Unless you want an error message popup coming up every time your customer goes to buy something, this is not the place for you.
Bluehost	Bluehost offers Private SSL Certificates for $45/year, and offers free install of third party certificates.
Why this Counts	Private SSL Certificates are extremely important for anyone considering running an online store or some type of data exchange. Without one, your customers would not even consider purchasing your goods and services, as all credit card and identifying information they submit will be plainly visible to anyone wanting to see. Most certificates are equal in intrinsic value, but most hosts will play on your insecurity to gain a little extra.（Godaddy提供的SSL服務14.99$/year，確實對比起來更超值）

 

更多詳情請訪問官方主頁：

Bluehost.com

PowWeb.com