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Wednesday, May 16, 2012
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Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

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Storage

Director-class switches, workgroup and enterprise NAS devices

By Christine Burns and Keith Shaw, Network World, 02/23/04

Best of the tests
Product update
Finalists

Winning company: Cisco
Winning product: Multilayer DataCenter Switch 9509

Almost like New Year's Eve fireworks, Cisco marked its rather tardy entrance into the director-class switch market with a big bang right around the beginning of 2003.

In our exclusive tests conducted by Lab Alliance partner Miercom, Cisco's Multilayer DataCenter Switch (MDS) 9509 simply knocked our socks off (see review). It registered performance numbers we had never before seen for this type of storage gear. The 112-port MDS 9509 - designed from the ground up by Andiamo Systems, a Cisco-funded development project - achieved wire-speed throughput for small and large frames at a rate of 2G bit/sec.

With the MDS 9500 series, Cisco introduced its virtual storage-area networks (VSAN) technology to the director-class switch market. VSAN technology lets you partition your SAN much like virtual LAN technology lets you partition your LAN resources. So if one VSAN serviced by the MDS 9509 experiences trouble, it doesn't affect the other VSANs defined within the switch's purview. VSAN technology also adds to the switch's scalability and the creation of multiple SAN "islands," eliminating the need to use a separate switch fabric for different applications.

In addition to its top performance numbers and its VSAN capabilities, the MDS 9509 ships with some excellent multifaceted management wares - at no extra cost, which is a rarity with this product class - and offers some unique non-disruptive redundancy features.


In November, Cisco introduced several capabilities for its MDS 9000 family storage switches. Included in the new features is the ability for servers in different VSANs to share disk or tape storage. In addition, you now can set quality of service and prioritize traffic dynamically. The new switches also let Fibre Channel, iSCSI, Fibre Channel over IP and Fibre Connection be mixed on the same switch. The company also announced a new version of its SAN operating system, which includes centralized management of multiple SAN fabrics, discovery, health and event monitoring, and historical performance monitoring.