Another Data Center Headache: Log Data Exploding

Following the March, 2004, bombings in Madrid, Spain, law enforcement searching for leads on those responsible for the attacks focused on the cell phones used by the terrorists and requested that European telecommunications providers turn over their call data. The only problem: It took the companies weeks to find the relevant data.

In an attempt to eliminate such problems in the future, the European Union created data-retention guidelines that require service providers to hold up to two years worth of call records and Internet records. The amount of data that the companies have to store skyrocketed-becoming a major data center issue, says Matthew Aslet, enterprise software analyst for The 451 Group.

"One of the issues is the volume of data," Aslet says. "One European telco we have spoken to cited three years of data equating to 36TB of storage."

The storage problem reaches far beyond Europe. While most companies use data centers to store their primary business information -- such as backups of important files and customer data -- real-time log data and unstructured transactional data are quickly becoming major issues as well, according to Aslet and other experts.

Most industries will face a significant data problem in the future, as compliance requirements force them to not only retain more data, but also make such data easily searchable.

Banks have to keep data from cash machines, utilities have to keep data on various events happening on their control and monitoring networks, and public companies need to document who accessed certain sensitive financial data to be compliant with Sarbanes-Oxley.

Much of the data is stored as event logs from a host of different devices on a network.

In the past, event data was not stored in a way to make retrieval easy. Every device on a network-whether a bank's ATM network, a corporate local network or a utility's control network-generates event data and storing that data has always been a problem. The issues will only become more significant in the future, says the 451 Group's Aslet.

"Clearly some of the major drivers are SOX and PCI (requirements), for which security log management is a partial answer to the problem, but issues such as the EU data retention guidelines for electronic communications are potentially broader and larger problems in terms of the amount of data to be collected and analyzed," he says.

Hewlett-Packard, one of many companies that sells systems to handle so-called event data warehousing issues, sees customers dealing with anywhere from 10 GB of data per day to 1 TB of data daily.

"There is a torrent of information coming out of these devices," says Gary Lefkowitz, a director in HP's Secure Advantage group.

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