More Persistent Storage Stuff part 1

More Persistent Storage Stuff part 2

Windows Mobile Team Blog — Tue, 19 Jul 2005 01:08:06 GMT

A continuation of my "More Persistent Storage Stuff" entry, which is a follow up to "Why Persistent Storage...

re: More Persistent Storage Stuff part 1

Reinier van der Lee — Tue, 19 Jul 2005 15:41:25 GMT

Mike,

good discussion. Two items I did not see addressed:
1. What about the future trend of RAM refresh current? I hear from Taiwan ODMs that this may drop significantly.
2. Small affordable HDs come to the market, driven by MP3 players. What about multi media smartphones with persistent data on hard disk?

To my experience main reason for data loss is not battery capacity running out, but hard resets required to get out of a system instability. Whatever the reason, losing data is the worst thing that can happen. Having a little data vault on the moble device could be a life saver for many road warriors.

Kind regards,

-Reinier-

More Persistent Storage Stuff part 2

Windows Mobile Team Blog — Tue, 19 Jul 2005 23:12:04 GMT

A continuation of my "More Persistent Storage Stuff" entry, which is a follow up to "Why Persistent Storage...

WM 05's Persistent Storage from the Inside Out

MobileRead — Tue, 19 Jul 2005 23:30:09 GMT

With Windows Mobile 2005 coming to our cell phones and PDAs soon, you may want to become accustomed to the idea of "persistent storage", which means that in future all of your personal data, user-installed applications, and updates are stored in...

re: More Persistent Storage Stuff part 1

windowsmobile — Wed, 20 Jul 2005 03:41:13 GMT

(For Reinier)
I don't have current data on RAM refresh current trends. If it's going down, everyone will benefit. But the only way it would make sense to switch back to RAM based storage would be for the refresh current to go to zero. At that point, we're effectively talking about a different technology.

We're agnostic to such things. If someone wants to develop a storage technology that has the characteristics of RAM and the persistence of Flash, we'll happily use it in our system.

As for small hard drives, there's nothing stopping those. PocketPCs have had MicroDrives running in CF slots for a while now. An OEM could easilly build one in and give you a ton of storage. Note that the drive would show up as a storage card though. We have the ability to move the user store to a hard drive, but I don't believe it's the right thing to do yet. Hard drives burn too much power to be used for all user storage. You don't want that thing spinning up every time a registry key gets written. But normal storage in flash and a bunch of media files on a built in hard drive makes total sense. Not announcing any specifics, you can bet that will happen.

Mike Calligaro

More details on Exchange SP2 and Mobile 5

Citrix, Microsoft and Mobility integration from the front lines.... — Tue, 02 Aug 2005 00:17:22 GMT

More details on Exchange SP2 and Mobile 5

Citrix, Microsoft and Mobility integration from the front lines.... — Tue, 02 Aug 2005 00:18:10 GMT

re: More Persistent Storage Stuff part 1

Hollywood — Sat, 19 Nov 2005 18:30:55 GMT

I find this debate really interesting and (as an interested developer) I'm trying to disable my cache right now on my Dell Axim x51v.

However, whenever I set the CacheLimit entry to 0, something (Internet Explorer) seems to come along and reset it again afterwards! - e.g. it was originally at a value of 65000+ - I set it to 0 - then after doing some browsing I look in the cahce directory and there are files there... and in the registry the CacheLimit is now set at 1800 ish.

Is there any way to really set the CacheLimit to zero?

Thanks!

re: More Persistent Storage Stuff part 1

Hollywood — Sat, 19 Nov 2005 19:17:09 GMT

Just to follow this up - I've also tried playing with one of youur later suggestions - I've tried setting the cache folder to exist on a non-existent storage card directory but files still seem to keep getting written to the same \Windows cache directory even after closing the applications and even after soft resets...

re: More Persistent Storage Stuff part 1

Matt — Wed, 04 Jan 2006 21:54:08 GMT

Setting cachelimit to 0 does not work. It just gets reset in WM 5.0 after a reset, thus the value is not persisted.

Persistent Storage - Windows Mobile 2003 and Windows Mobile 5.0

Jason Langridge's WebLog - MR Mobile! — Mon, 03 Jul 2006 11:11:25 GMT

One of my colleagues Reed Robison published an internal summary of the great articles that Mike Calligaro...