May 19, 2012

My 2009 IT Industry Predictions

Lightbulb

Predictions are perilous: Get it right and you look like a mere trend-watcher; get it wrong and you look like a fool. So I’m doing something different this year: I’m going to make predictions for 2009 now that it’s over, and reflect on just how smart I am (not) to have made them.

Is Flash A Disk Or A Cache?

Flash, Cash, Disk

There is a battle shaping up in the enterprise storage industry. On one side are those who see flash storage as an upgrade for the disk drive, and on the other are those who see it as a cache between the CPU and the drive. It’s a fundamental difference of opinion – flash chips can [...]

Xen 3.3 Update Brings Paravirtualized SCSI

PVSCSI gives virtual machines direct access to SCSI and FC HBAs, and plays nicely with NPIV (Xensummit diagram by Fujitsu)

One of the new features in Xen 3.3, released this week, caught my eye: Paravirtualized SCSI (PVSCSI), which allows a guest OS to directly interact with a SCSI (or Fibre Channel) HBA. This should allow more specialized applications to be virtualized in Xen environments that use SCSI or FC storage without requiring the addition of [...]