Storage: Opinions

The initial approach to storage virtualization, which has been around for years, was to address it in the storage-area network because the SAN sat between the storage and servers, and would cause the least disruption to these systems. However, after nearly a decade, this approach has not taken off while server virtualization has become widely accepted. What needs to be changed to make storage virtualization as ubiquitous as server virtualization?

Mother Nature has wrought havoc in the Gulf and many of us were once again faced personally with worries over friends and family in harm's way and professionally with concerns about organizations facing uncertainty over their ability to continue or even recover their businesses. In a timely coincidence, I happened to be attending a disaster recovery (DR) conference on the west coast, and, appropriately, Hurricane Ike occupied center stage for much of the discussion. A number of would-be participants never made it to the conference as they were attending to more pressing matters back home.

In our daily lives we try to protect ourselves from the worst. We buy insurance for our cars, homes and health and we safeguard personal information. Shouldn't business owners and IT managers treat their networks and critical infrastructure the same way?

Evidence is mounting of a growing cynicism regarding green initiatives within the IT infrastructure space. We may be reaching a point where vendor hype has hit a saturation point and beginning to meet with customer resistance. While there is a genuine concern about data center power consumption, particularly with regard to accommodating increasingly dense technology footprints, the larger concern for most, particularly in the current climate, is controlling costs.

In a recent review, I consolidated FC and Ethernet networks using FCoE (fibre channel over Ethernet) and Cisco's new Nexus 5000 switch. As the review showed, the combination merged the two transport protocols easily, allowing FC frames to channel through a 10G connection without giving up features or performance.

Of the assortment of technologies swarming around the storage and data protection space these days, one that can be counted on to garner both lots of interest and lots of questions among users is deduplication. The interest is understandable since the potential value proposition, in terms of reduction of required storage capacity, is at least conceptually on a par with the ROI of server virtualization. The win-win proposition of providing better services (e.g. disk-based recovery) while reducing costs is undeniably attractive.

Healthy debate is often necessary to get a balanced view of an emerging technology. Somewhere between endorsements and detractions, a realistic understanding of the long-term outlook for a technology arrives. As such, I have decided to turn to a guest once again for the second installment in what I hope to be an ongoing debate over the merits of flash SSDs (solid-state drives).

Would you pay several times more for a technology that yields only dubious performance advantage? How about if that technology is experiencing a high rate of product returns from early adopters?

I have a nightmare vision of storage administrators becoming clones of the mail carrier Newman from the TV sitcom Seinfeld, who once bemoaned the endless pressures of his job, crying, "The mail! It just keeps on coming and coming!"

About 20 years ago, one of my first programming assignments as a Unix systems software developer related to backup. Specifically, I was to modify the device driver for a quarter-inch cartridge tape subsystem to improve streaming performance and to enhance the associated system-level command set for ease of management.

The continuing advancement in the numbers and kinds of options available to assist with disaster recovery is encouraging growing numbers of organizations to look at ways in which to enhance their disaster recovery capabilities. Storage vendors are enhancing their replication capabilities, tools for rapid recovery for databases and core applications like Exchange are finding their way into organizations of all sizes, and, of course, virtualization has opened new disaster recovery opportunities to a wide range of organizations.