Search /
Docfinder:
Advanced search  |  Help  |  Site map
RESEARCH CENTERS
SITE RESOURCES
Click for Layer 8! No, really, click NOW!
Networking for Small Business
TODAY'S NEWS
Report: US FCC to allow payments for speedier traffic
China working on Linux replacement for Windows XP
FCC adds $9 billion to broadband subsidy fund
Raspberry Pi alternatives emerge to fill need for speed
It's now possible to wirelessly charge 40 smartphones from 16 feet away
Ex-FCC commissioner to head CTIA in latest Washington shuffle
Go time traveling with Google Maps
While Heartbleed distracts, hackers hit US universities
Survey respondents shun much-hyped mobile shopping technologies
Survey respondents shun much-hyped mobile shopping technologies
7 Ways to Advance Your Project Management Career
How Apple's billion dollar sapphire bet will pay off
US to vote on sharp increase in broadband subsidies
iPhone 6 rumor rollup for the week ending April 18
NSA spying revelations have tired out China's Huawei
Arista co-founder may have switch maker by its jewels
Apple kicks off public OS X beta testing
Open source pitfalls – and how to avoid them
AT&T's expanded 1 Gbps fiber rollout could go head to head with Google
BlackBerry Releases BES 10 Security Update to Address 'Heartbleed' Flaw
Verizon: Web apps are the security punching bag of the Internet
Cisco announces security service linked with new operations centers
Dell launches virtual storage accelerator, aims to boost SAN performance
Free OS X Mavericks now powers half of all Macs
/

Cache beats back bandwidth blues

Today's breaking news
Send to a friendFeedback

Today's breaking news
Send to a friendFeedback


Some network administrators spend a lot of time monitoring Internet usage, setting firm rules and issuing threats when users grab more than their fair share of the pipes.

Steve Hosack, manager of worldwide networks at network vendor Adaptec, says that's a waste of time.

The majority of his employees use the Internet for work, and he says he'd only be asking for trouble if he tried to change people's habits.

Besides, he couldn't throttle Internet access - the company has a lot riding on it, especially considering the company extranet is becoming a wagon train for suppliers and customers.

To keep things moving smoothly, Hosack scrapped Netscape's proxy server in favor of a dedicated network appliance for caching.

Hosack started his caching search this past December, when he began beta-testing network appliances from CacheFlow, a 2-year-old start-up in Sunnyvale, Calif. Network appliances, such as CacheFlow 100 are self-contained units that do only one thing - cache Web traffic. CacheFlow 100, the company's smallest box, can store 2G bytes of data, comes with 128M bytes of memory and hooks up to a router or a switch at the edge of the network.

Hosack put CacheFlow boxes into production in March. Since then, "we never hit any level of traffic where performance went down - no matter what kind of load we put on it," he says. In addition to CacheFlow 100, he's using two CacheFlow 1000s, which are high-end, carrier-class boxes with 25G bytes of storage, 256M to 512M bytes of memory, with two to four 10/100M bit/sec Ethernet ports.

Another source of cache

While CacheFlow is pitching the fact that it does nothing but caching, Network Appliance is relying on the strength of its experience in building dedicated file servers.

That experience was one reason Glenn Newell, intranet architect at National Semiconductor, went with the older company. National Semiconductor has over a dozen NetApp file servers.

Like Adaptec, National Semiconductor used Netscape's proxy server before going dedicated. National Semiconductor tried several caching implementations in the firewall - he won't reveal details because of security - but "network performance actually went down when we tried to do any caching," he says.

Newell has had a better experience with the two Network Appliances' NetCache C230 boxes that now sit between each of his T-1 lines and a 10M bit/sec switch. Out of the box, he saw a 20% drop in bandwidth usage. And after fine-tuning it a bit (he says instructions for dealing with cookies were unclear), his savings shot up to 40%. Newell saw a dramatic decrease in the time it takes to view 40% to 60% of Web pages. NetCache C230 has up to 256M bytes of memory, up to 36G bytes of storage, Ethernet, FDDI or ATM connections, and starts at $16,555.

Network Appliance recently announced its second-generation of caching boxes, the NetApp C700 series, with Version 3.3 of the NetCache software. Network Appliances says the new line has twice the performance of the old line. NetApp 720s has 512M bytes of RAM, up to four 9G-byte disks and all flavors of Ethernet, FDDI and Copper Distributed Data Interface connections (no ATM). Pricing starts at $19,995.

RELATED LINKS

Contact Senior Editor Robin Schreier Hohman

CacheFlow Document Center
Caching primers and white papers.

Caching wards off Web access worries
A tech update. Network World, 6/29/98.

Enterprise caching: Smart or smoke?
Nolle analyzes the issue. Network World, 11/9/98.

Bandwidth hunger creates a Cache-22
Winn Schwartau looks at some caching proposals. Network World, 2/23/98.

Review: Proxy servers from Netscape and Microsoft
Network World, 2/9/98.


NWFusion offers more than 40 FREE technology-specific email newsletters in key network technology areas such as NSM, VPNs, Convergence, Security and more.
Click here to sign up!
New Event - WANs: Optimizing Your Network Now.
Hear from the experts about the innovations that are already starting to shake up the WAN world. Free Network World Technology Tour and Expo in Dallas, San Francisco, Washington DC, and New York.
Attend FREE
Your FREE Network World subscription will also include breaking news and information on wireless, storage, infrastructure, carriers and SPs, enterprise applications, videoconferencing, plus product reviews, technology insiders, management surveys and technology updates - GET IT NOW.