Last week Microsoft formally announced Windows Live Sync, the new version of which is based on Live Mesh. Live Mesh gave users 5GB of cloud storage to which they could sync data to. As well as near-unlimited data transfer between PCs.

The new Windows Live Sync, based on Mesh continues to offer most of the functionality that Live Mesh provided, bar the Live Desktop which mimicked the PC desktop as a way to offer data currently stored in the cloud which was removed as well as a few other little things here and there.

Since Live Mesh was introduced back in 2008, it sat competing with the then primitive Live Sync which only offered PC to PC synchronisation. Live Mesh was no question the better of the two so it's no surprise it is being used as the basis for the next version of Live Sync. Through Windows Live, people get 25GB of cloud storage on SkyDrive. An obvious move going forward would be to unify the Mesh and SkyDrive storage. That's basically what they've done in this release.

But you can only store 2GB of synchronised data to SkyDrive. Why?

Microsoft cites cost. Everyone shouts bogus, saying they're giving people 25GB anyway. What people aren't getting is it's really hard to fill up 25GB of space when you upload through a website or through Office, with a maximum file size of 50MB. I keep a copy of my entire picture library up there and I'm only using 6GB of it and I'm probably the top 1% of SkyDrive users.

Yet if you had folders on your computer that are set to automatically synchronise in the background to SkyDrive, that 25GB would start filling up really fast. And that would be dramatically more expensive than the current state where I'd guess the average SkyDrive account has a few megabytes of storage being used.

Give it time and no doubt Microsoft will increase the amount of synchronised storage. Sure it's a bit of a bummer that Mesh users have to downgrade to 2GB. But this isn't some geeky toy like Live Mesh was. This is a consumer product that will be installed on hundreds of millions of machines. That equals a lot of hard drives in the cloud, and that isn't cheap.