Cisco Systems has internally tested and benchmarked on the Cisco SN 5420 Storage Router in a variety of situations. The goal of this testing was to show that the Cisco SN 5420 can produce similar throughput to native fibre. In addition, the advantages of its features must be stressed in accordance with the benchmarks.
Cisco used the Intel Iometer benchmark in the Windows NT Service Pack A environment. The results of the testing show that the Cisco SN 5420 Storage Router is competitive with native fibre channel, and that its remote data access, remote backup, pooled storage, and IP security features make it an attractive option for a storage area network.
For the Cisco SN 5420 tests, the IBM Netfinity was connected to a single Cisco SN 5420, which was connected to a Compaq RAID array. The fibre channel connection was through a Vixel hub and the Gigabit Ethernet connection was through a Cisco Catalyst® 6500 Switch. The fibre channel tests were run using the IBM Netfinity connected to a Compaq RAID array through a Vixel hub.
|Cisco SN 5420 Test Setup||Fibre Channel Test Setup|
The tests "4K OLTP, File Server," and "Web Server" are predefined tests that are distributed with the IOMeter test. The tests "Random Read 4k" and "Random Read 64k," as their names imply, execute 100 percent random and 100 percent reads of 4k and 64k.
These tests were selected because they are more representative of "real life" disk usage, rather than tests that show best-case throughput, but would never occur with real applications. The number of outstanding I/Os was set to 10. A formatted disk was used, and the maximum sector was set to 20480 to limit the test to a 10-MB region of the disk.
The importance of the benchmarks is to show that IP connectivity and the other Cisco SN 5420 features can be achieved without having a severe impact on performance. The Cisco SN 5420 is the first product of its kind based on the IETF IP storage (iSCSI) draft standard. As the Cisco SN 5420 matures, and its driver and firmware are upgraded, Cisco expects performance to continue to increase.
The Cisco SN 5420 Storage Router and iSCSI allow global access to storage through IP with little disruption to an existing network. The Cisco SN 5420 also provides an open standards solution with all the common security, interoperability, scalability, and manageability of a Cisco product.