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The most encouraging news about iSCSI is that firms are using it to host some of their most important apps. Last fall, there was a 56% jump in the percentage of respondents who said they'd park their mission-critical apps on iSCSI and the current survey proves that wasn't an anomaly, with 31% still confident iSCSI can serve key apps adequately. Backup (57%) and email (39%) are gaining favor as apps that will be hosted by iSCSI storage, picking up 12 and 11 points, respectively, compared to last fall's rankings.
The ability to use existing network infrastructure is generally considered a plus for iSCSI, but it can also be a cause for concern for storage specialists. "We don't control the network; the network's controlled by the university," says Kirsteins at Temple University Health System. "It does go down twice a month for maintenance, and we just can't afford those windows."
Price matters to iSCSI implementers, with 28% saying its lower cost vs. FC storage was their primary reason for deploying it. But almost as many respondents (22%) say iSCSI's performance is adequate for their applications, and consider that the key to its deployment. As other industry studies have suggested, it seems iSCSI is slipping out from the shadow of being a cheap storage alternative for those who can't afford the "real thing."
Average number of currently installed switches
This was first published in May 2007