Pro+ Content/Storage magazine

Thank you for joining!
Access your Pro+ Content below.
Vol. 3 No. 8 October 2004

Users Need Better Way to Predict Disk Failures

All disk drive manufacturers happily publish their products' mean time between failure (MTBF) ratings, numbers like 500,000 hours for desktop-class drives, or 1 million hours for SCSI and Fibre Channel drives. But many users feel that the MTBF metric is largely irrelevant in a real-world storage environment. MTBF "is basically a useless number" from a user's perspective, says Mike Chenery, vice president of advanced product engineering at Fujitsu Computer Products of America, a disk drive manufacturer. "What they really want to know is 'How many of my drives are going to fail?'" Part of the problem with MTBF is that not everyone understands how it is calculated. An MTBF of 1 million hours, for example, does not mean that a drive will fail in 114 years (24*365*114), as some users may conclude. Rather, it's a statistical metric derived from testing of a large number of drives for a number of days, and determining the mean failure rate for the entire group, explains Aloke Guha, CTO at Copan Systems, a startup that makes a ...

Access this Pro+ Content for Free!

By submitting you agree to recieve email from TechTarget and its partners. If you reside outside of the United States you consent to having your personal data transferred and processed in the United States. Privacy Policy

Features in this issue

  • First Look: Storability's GSM 4.0

    by  Robert L. Scheier

    Storability Software's Global Storage Management software offers improved reporting capabilities and new exposure analysis reports in its latest version.

  • Back Up to the Future

    A magic ball to predict tape failures?

  • Hot technologies for 2005 and beyond

    Storage editors asked industry leaders what new technologies are likely to have the most impact on storage operations. We look at the top five emerging technologies and tell you why they can change how storage gets done in your shop.

Columns in this issue

SearchSolidStateStorage

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

-ADS BY GOOGLE

Close