今天参加了Riverbed公司(纳斯达克代码:RVBD)的广域网加速设备---Steelhead的技术交流会。

  简单说,Riverbed公司的Steelhead设备可以在不增加带宽的情况下,解决带宽、应用、存储等一系列问题。Steelhead系列设备能将现有的分布式IT系统的吞吐能力提高达100倍之多,这就意味着企业甚至能在广域网上实现类似于局域网的应用性能。

  据Riverbed的工程师介绍,Riverbed的核心技术是“可伸缩的数据索引”,数据优化通过使用一种专属算法,将数据分割成多个可参照的小数据块,即数据碎片化。进行动态切割。一个碎片一个标记,并存储在Steelhead设备。文件第一次通过网络传送时,其所有数据和索引链发出请求,在硬盘中储存。把碎片加指针进行传输,巧妙的办法就是将指针作为原始数据,再进行碎片化。当传输文件时,不是对文件进行操作,而是对历史的所有碎片进行操作,系统对碎片不断进行记忆,后面可以引用前面的碎片。这样,有些看来是第一次传输的文件其实并非第一次传输,所以传输速度快很多。

  举个例子,一个10M大小的电子邮件附件,同时要抄送给外地某分部门的3个人,就算能够将其压缩到1M,也需要在广域网上传输总共3M的数据。而使用Riverbed公司的Steelhead设备后,只需在广域网上传输1M数据。

  点击在新窗口中浏览此图片

  TCP包中有很多限制。如传输数据从广州到北京。Steelhead是将TCP进行中断,从广州到本地Steelhead是一段,从Steelhead到另一个Steelhead是一段,从Steelhead到北京又是一段,共三段连接。当TCP的包从广东传出来后,到Steelhead为止,设备把这些包打开,将数据拿出来,切成碎片,这些碎片有一部分是以前已经存在的历史碎片的记录,将碎片配以指针,再进行TCP打包。这就可将10,000个包变成100个包,大大缩短了延迟。基于Riverbed的这“三段论”,北京的Steelhead就像广州在北京的代表处,很多问题变年成了局域网的问题,减少了网络容量。

  新浪的邮件部门将率先采用Steelhead设备。

  附:Riverbed公司成立于2002年,位于美国加利福尼亚州的旧金山市,纳斯达克上市公司,其中文网址为:http://www.riverbed.com/cn/




电脑杂谈 | 评论(28) | 引用(0) | 阅读(19778)
镜花水月
2007-5-23 10:40
我们的产品和技术比riverbed的好。有兴趣的联系我。qq377723158
johnzw
2007-9-7 15:01
感觉不就是一个大的缓存吗?
当TCP的包从广东传出来后,到Steelhead为止,设备把这些包打开,将数据拿出来,切成碎片,这些碎片有一部分是以前已经存在的历史碎片的记录,将碎片配以指针,再进行TCP打包。这就可将10,000个包变成100个包,大大缩短了延迟。

这段话有点离奇,能解析一下吗?10,000个包变100,包大小呢?以太网最大包数据1500字节,我就不明白10,000个1500字节包,怎么变100个?难道这些普通数据包里的data都是0在填充?
louis vuitton uk Email Homepage
2011-11-22 17:32
This louis vuitton uk for sale belongs to the sounding just what are termed as Louis Vuitton vintage best sellers, many other products and services for the reason that range appearing companies.You will easily notice the unfold zippers of this coach outlet store online. That is the decoration. There are some inside pockets for you as well. They are easy to match your clothes and to carry.Let us inspire your inner beauty with fine christian louboutin sale. Purse the elegance in bridal wedding. Enjoy the fashion.
coach factory outlet Email Homepage
2012-5-17 10:22
Today, following half a century, mentor leather-bases coach factory outlet continues to be the delicate craft of leather-based master is accountable for,Would you like to meet more friends, or go with the times? If yes, coach factory online is opening welcome doors to you.in the market you definitely can find various colorways that are designed in as well as the high quality that applied in. For most of you would like to come. So just come to our coach factory outlet online store to choose one.
louis vuitton sale Email Homepage
2012-5-17 10:22
Louis Vuitton belt at louis vuitton sale is one kind of fashion accessory with high cost performance among the Louis Vuitton accessories.Offering quality LV products with favorable prices, louis vuitton outlet store is at your service. Hurry up, or you can not seize the chance.in fact, louis vuitton is one of the most famous fashion design master.he opened the fist suitcase shop called after his name.
coach outlet online Email Homepage
2012-5-17 10:22
I heard of coach outlet online through the advertisement when I was shopping. And now I often brow the webpage and buy Coach bags online.It is a symbol regarding position not to mention nature.Here I would like to launch a excellent bags pertaining to business men.Which may be coach outlet store.coach outlet has always been simple,durable style features to win consumers.The products are more flexible,with easy bleaching,wear characteristics,and simply use a damp cloth.
coach outlet, Email Homepage
2012-5-17 10:22
Remember the coach outlet provide coach bags which won't be deteriorated into its overall styles by any means. It will maintain its looks, colors, and uniqueness for long time.coach outlet store online has been voted by Hour Detroit magazine readers as the Best of Detroit in their 12th annual readers'poll.Lots of women like which usually amount normally include a coach outlet online ,it provides coziness to many girls that don't even think it is a great bushel of great interest directly to them.
xujie777 Email
2012-5-18 15:31
We aim to make all our customers satisfy with our products. You will find a variety of Men's fashion louis vuitton uk, fashion Women's cheap Louis Vuitton bags in our store at affordable price.Thinking of interesting ways to cost a milestone birthday? louis vuitton online shop had one of the most distinctive distinctive celebrations.bakery along with living room operated by means of about three moment louis vuitton online Most effective Pastry Chef’s of the year Rammy Nominee Chef’s.
xujie777 Email
2012-5-18 15:31
The choices are likely to be basically countless seeing that louis vuitton outlet occurs with the help of completely new and also incredible concepts once in a while.Louis vuitton Wholesale Monogram Canvas HandbagsLouis Vuitton Collection Beach Handbags louis vuitton bags outlet Damier Canvas HandbagsLouis vuitton Mahina HandbagsLouis Vuitton Monogram Mini Lin HandbagsLouis Vuitton Monogram Multicolore HandbagsLouis vuitton Monogram Vernis HandbagsLouis Vuitton Wholesale Epi Leather HandbagsLouis Vuitton For Men HandbagsLouis Vuitton Damier Canvas WalletsLouis Vuitton Epi Leather WalletsLouis Vuitton Monogram Canvas WalletsLouis Vuitton Monogram Vernis WalleLouis Vuitton ShoesLouis Vuitton Men wallets.As the Authentic Louis Vuitton are so high-priced, so came the louis vuitton handbags outlet.
xujie777 Email
2012-5-18 15:31
coach outlet has become a popular shopping experience for consumers around the world, and a desirable distribution channel for manufacturer's and retailers.Getting your hands on coach outlet store online can be a hefty investment of hundreds of dollars.But do not despair,the Coach Outlet store could be the answer to your prayers.coach outlet online is your smart choice when you want to get the discount Coach accessory. You can find the exact Coach Bags and other accessory you want at a low price that's right for you. My dear friends, let the coach outlet online pave your way into the world of high fashion with their ultimate fashion factory.
xujie222
2012-5-21 10:48
Our online store offers you discounted Designer louis vuitton replica wallet at present. You could find them in desirable quality and price. If you don't mind high class louis vuitton uk, have a good time here.louis vuitton Store Online Handbags can also bring great accuracy as well as practical applicability and fashionable.Have you ever dreamed of being as charming as Madonna? Have you ever thought of becoming an envy of all your friends? If so, come to louis vuitton outlet.<br/>
xujie555
2012-5-21 13:14
coach factory outlet uses graceful accessories to match the classical logo of coach, which is the best combination of coach. The handmade coach products?can make you more charming and graceful.coach factory online provides people many coach goods. If you wish to snatch the coach handbag, then this best method is made for that you like for coach discount.coach factory outlet online is a fashion brand to ensure its quality. With designer coach shoulder bags, you will always attract people's attention. The bags will emphasize your personal style and taste.<br/>
xujie333
2012-5-21 14:36
coach outlet online Store guarantee that all the coach handbags offered are own high quality. In addition , all of them are sold at an unexpected low price.If you want to purchase, just visit their website.coach factory outlet is really sizzling kinds of shopping way for you. With the usage of the replica designer coach bags, you can surely be able to change your individual looks in a stunning manner.Coach bags on sale from the coach outlet are cheap or discount prices that you certainly will stand out from the crowd on your next camping trip!<br/>
Coach Factory Store Email Homepage
2012-7-4 09:17
******
By no means spam directly in the publish and continuously give full solutions and include to the discussion Chanel Outlet
coach88888888 Email
2012-8-13 17:20
Coach Factory Outlet offer excellent, elegant coach products in order to generate room for your new collections.They're purchased more quickly that you may at any time imagine.Most significantly, the coach designer purses of Coach Factory Online industry won't deteriorate your individual fashions at all. Rather they would immediately change your overall looks marvelously.I find it all very odd But this is no different than Coach Outlet Online any other company that has an outlet presence and really doesn’Coach Outlet Store t explain it to the customer.By the fashion, novel appearance, sophisticated technology, superior quality, Coach Outlet won domestic and international customers, their products exported to the Middle East, Southeast Asia and other regions.
Cheap Coach Bags Email Homepage
2012-8-30 21:08
even though the naive qi identified processing chaos oversight but he has no way of interference Louis Vuitton Outlet
shzz Email
2022-7-3 00:28
Great tips and very easy to understand. This will definitely be very useful for me when I get a chance to start my blog.  Lead generation
shz Email
2022-7-3 00:28
Always so interesting to visit your site.What a great info, thank you for sharing. this will help me so much in my learning  Lead generation
分页: 1/2 第一页 1 2 下页 最后页
发表评论
表情
emotemotemotemotemot
emotemotemotemotemot
emotemotemotemotemot
emotemotemotemotemot
emotemotemotemotemot
打开HTML
打开UBB
打开表情
隐藏
记住我
昵称   密码   游客无需密码
网址   电邮   [注册]