Archive for the 'mobility' Category

Pre-pay America?

[Update: added expiration reason]

The NY Times ran an article by Brian Chen “Prepaid Cellphones Are Cheaper. Why Aren’t They Popular?”  Brian points out that less than 25% of mobile/cell phones in the US are pre-paid and pre-paid work out to be the best choice from a cost perspective and wondering why more people by don’t use them.

Based on my experience, I currently have a t-mobile USA Contract phone;  2x UK pre-pay SIM cards, a t-mobile USA pre-pay SIM and a Virgin Mobile India pre-pay, here is what I can say about pre-pay in the USA

  • Pre-pay in the USA is way, way more expensive than anywhere else in the world. For an example, to get a unlimted 4G plan from t-mobile, I pay $70 per month. Here in the UK, with the O2 network I can get effectively the same for UKP 10 per month, plus a UKP 10 per month “The Web Works” bolt-on(total at $1.5632 per UKP, $31.27); In India, its about a 3rd the cost of the UK, effectively $10 per month(the data was much slower though).
  • Friend and retired IBM Fellow Mike Cowlishaw pointed out one major reason why US pre-pay are a poor deal compared to at least UK, you pre-pay for a US phone and you typically pay a set amount, that amount expires after a set period. For example, for my current US t-mobile pre-pay, I paid $70 and that will be gone by Aug 13th. Compare that to my UK O2 pre-pay. I paid 10 UKP, then added additional credit as needed. Provided I keep at least 10 UKP it never expires and I don’t get charged for incoming calls.
  • Phones are locked so that you can’t put any SIM from another network, but you can get this removed depending on the network. In my case t-mobile refused point blank to remove mine when requested as I’d not had my pre-paid account for 60-days. Despite the fact that when I bought it, and told them I’d need to put a UK SIM in the phone, they said t-mobile UK could handle it. They couldn’t, nor would t-mobile USA. It’s not my first time at the rodeo, I got an unlock code from an Internet supplier.
  • Phones, especially smart phones are deliberately incompatibe between networks. See the picture. My t-mobile USA an Samsung Galaxy S3 (SGH-T999) with an O2 SIM, compared to my friends O2 Samsung Galaxy S3. Right next to each other, his gets an HSDPA(4g) connection, mine doesn’t. This is common and works both ways, buy a unlocked phone in Europe, take it to America, no go. While the networks claim compatibility, the drivers for the radio’s inside the phones are always optimized/proprietary and you never get the best network speed. Again, you can, and I have, get the network radio drivers from the Internet and install them. This is not a job for the faint hearted.
  • Bandwidth limits for data are mostly imposed, on pre-pay you get the contract when you buy more network, not once when you take out the contract.
  • The is little or nor clarity about contracts and tie-ins with wifi access for pre-pay customers; most contracts include some form of wifi access, however increasingly US networks are enjoing GSM and wifi network data limits, which is really just nonsense and a deliberate fraud of mobile customers.
O2 Samsung S3 Galaxy

OS Samsung Galaxy S3 gets HSDPA

All the US Networks are the same, this is to some degree a cartel. They all have the same things to lose, and given the incompatible networks, nothing to gain by having a free market. Compare that to Europe where the EC has mandated compatibility, and roaming charges. If you are considering a pre-pay phone, don’t expect to buy a cheap phone off the Internet, unless its a new phone for the network you are going to use.

At some point, Apple, and/or Samsung/Google are going to break the network hold, it’s not clear though that it will be better the devil you know.

Its all about the apps

At least according to anyone who has owned an Apple phone, its all about simplicity… The iPhone does that. Despite the recent announcement of a whole set of new iOS6 features integrated with Facebook that are mostly copied from Windows Phone 7.5 its actually still all about the apps for me.

As of yesterday I was till under the impression Dell was going to launch new phones later this year. Well apparently not anymore, a shift in strategy means we are going to focus more on the management, than phones themselves. I’ve grown really fond of my dell Venue pro with Windows phone, despite the fact I’ve been holding onto a device with a cracked screen, hoping for new devices to be launched real-soon-now.

One of the big frustrations I’ve been living with isn’t the phone or the OS at all, its the Twitter client/app. It constantly returns “rate limited”.

Want to tweet? Sorry, rate limited. Want to retweet, rate limited. I tried birdsong, at 99c what a deal, shame the red on black text is unreadable and not changeable. At least accordingly to the Windows Phone marketplace, it is an official app Published by: Twitter, Inc. and released in October 2010. Ever since I installed this, it often fails with rate limited, I guess this is an app error based on https://dev.twitter.com/docs/rate-limiting. – Shame is loads of people are complaining about it that twitter have not addressed it.

Next up, I tried Seesmic… Used it before, wasn’t really that good, very restricted input windows for non-twitter sites like facebook. lets try again, sorry can’t create twitter space, turns out to be a authentication error…. I’m guessing in direct response to twitter changing to always returning a gzip formatted authentication response.

I tried Birdsong, a really nice twitter app, sadly it uses red on black for twitter names and links, which on my phone is unreadable. So what to do about a broken app? Despite my enthusiasm for Windows 8, I think the time has come to switch over to Android. I have a B&N rooted to Android Gingerbread, and a Smasung Nexus S with ICS, and although they are both great computers, as a smart phone, I prefer Windows Phone 7.5. But hey, as a platform the Facebook app is not keeping up, the twitter app is broken, the marketplace lacks details on versions, updates and more.

Posted from WordPress for Windows Phone

On Power Systems and Security

One of the topics I’m trying to close on at the moment is Power Systems Security. I have my views on where I think we need to be, where the emerging technology challenges are, what the industry drivers are(yours and ours), and the competitive pressures.

If you want to comment or email me with your thoughts on Power Systems security, I’d like to hear. What’s important, what’s not?  Of course I’m interested in OS related issues, AIX, i, or Linux on Power. I’m also interested in requirements that span all three, that need to apply across hardware and PowerVM.

Interested in mobility? Want your keys to move between systems with you? Not much good if you move the system but can’t read the data becuase you don’t have key authority. Is encryption in your Power Systems future? Is it OK to have it in software only, to have it as an offload engine or does it need to run faster via acceleration. Do you have numbers, calculations on how many, what key sizes etc.

Let’s be clear though, we have plans and implementations in all these areas. What I’m interested in are your thoughts and requirements.

IBM’s new Enterprise Data Center vision

IBM announced today our new Enterprise Data Center vision. There are lots of links from the new ibm.com/datacenter web page which split out into their various constituencies Virtualization, Energy Efficiency, Security, Business resiliency and IT service delivery.

To net it out from my perspective though, there is a lot of good technology behind this, and an interesting direction summarized nicely starting on page-10 on the POV paper linked from the new data center page or here.

What it lays out are the three main stages of adoption for the new data center, simplified, shared and dynamic. The Clabby analytics paper, also linked from the new data center page or here, puts the three stages in a more consumable practical tabular format.

They are really not new, many of our customers will have discussed these with us many times before. In fact, there’s no coincidence that the new Enterprise Data Center vision was launched the same day as the new IBM Z10 mainframe. We started discussing and talking about these these when I worked for Enterprise Systems in 1999, and we formally laid the groundwork in the on demand strategy in 2003. In fact, I see the Clabby paper has used the on demand operating environment block architecture to illustrate the service patterns. Who’d have guessed.

Simplify: reduce costs for infrastructure, operations and management

Share: for rapid deployment of infrastructure, at any scale

Dynamic: respond to new business requests across the company and beyond

However, the new Enterprise Data Center isn’t based on a mainframe, Z10 or otherwise. It’s about a style of computing, how to build, migrate and exploit a modern data center. Power Systems has some unique functions in both the Share and Dynamic stages, like partition mobility, with lots more to come.

For some further insight into the new data center vision, take a look at the presentation linked off my On a Clear day post from December.

Last weeks announcement recap, Power6 Blades and AIX

Thanks to the folks over at the “Power Architecture zone editors’ notebook” blog here is their summary of last weeks announcements.

Get yours today: Listen UNIX users — the newly available IBM BladeCenter JS22 with Power6 is what you’ve been waiting for. Couple the JS22’s Power6 processor technology with the built-in Advanced Power Virtualization and you’ve got a lot of Power concentrated in a compact container (which can also save you on space and energy costs). It comes loaded with two 4GHz dual-core processors, an optional hard drive, and an Ethernet controller; it supports as much as 32GB of memory; the first shipments are configured for the BladeCenter H and BladeCenter HT chassis. And its virtualization features make it really special (see following entry for more on this).

And what’s a new blade without a complementary OS: Targeted for Friday, November 9, 2007, the release of AIX 6 from the beta bin should provide users improved security management and virtualization features that take advantage of a hypervisor included in the Power6 processor so you can get 100 percent application up time. The Workload Partition Manager should let sysadmins create multiple partitions (each with customized memory settings for users and application workloads) and the Live Application Mobility feature can shift applications from one server to another on the fly (and they keep running while migrating). Then there’s the Security Expert which lets users control more than 300 security settings (role-based access to applications, user-based authentication, etc.). These OS utilities should work well with the Power6 Live Partition Mobility hypervisor which can move an entire OS (AIX, RHEL, and SLES) and its workloads from one server to another while they are running. (In fact, you can preview AIX 6 here if you can’t wait until Friday.)

More mobility, this time SAP

After my post back in August about the Partition Mobility video posted on YouTube, I got a few emails about the steps it actually took, what it looked like etc.

Walter Orb at the IBM SAP International Competence center along with Mattias Koechel have produced an excellent, instructional and illustrative example of Power Live Partition Mobility. Unfortunately, it hasn’t been published publicly because it isn’t a straight video but created with a tool called camtasia and it is not a polished marketing piece, neither was the YouTube video, but this one’s more educational.

It made some of the steps clearer for me, also it shows that you can use Power 6 Live Partition Mobility with SAP, rather than the Oracle workload shown in the earlier video. If you are interested in seeing in, including the relevant HMC screens, performance monitor etc., comment here or email me and I’ll get you a copy for Windows.

[Update] I just got to read the press release accompanying this weeks announcements, it includes a great customer reference for Live Partition Mobility and SAP. The quote is from Informations-Technologie Austria (iT-Austria), the leading Austrian provider of IT services for the financial sector, and can be found here in the full press release.

[Update: 10/29/08] Almost a year later and I still get requests for this video. I’m delighted to say it’s online now and can be found on this ibm.com web page and is now available in Flash and Windows Media versions.

AIX/6 and Power 6 Enhancements — Tools for the task

I’ve been catching up on some back issues of the IBM Open Systems magazine, in the latest issue, August ’07, Ken Milberg provides a useful overview of the new AIX Workload Partitions and comes to the same conclusion I did, “I see the WPAR as a real complement to LPARs, not a replacement”.

Over on Julien Gabel “blog’o thnet”, he does a liberal comparison of the new AIX and Power 6 features with some existing and many upcoming features promised for Solaris. It’s an interesting comparison insomuch that there has been much discussion over the similarity between AIX Workload Partitions and Solaris Containers. One of the reasons we introduced containers now was the linkage and exploitation of Live Application Mobility. Julien draws the distinction between Solaris Containers as utilization feature, and not a virtualization feature.

For my part I don’t see the difference, and the more you think about this, the more obvious it becomes. Continue reading ‘AIX/6 and Power 6 Enhancements — Tools for the task’


About & Contact

I'm Mark Cathcart, formally a Senior Distinguished Engineer, in Dells Software Group; before that Director of Systems Engineering in the Enterprise Solutions Group at Dell. Prior to that, I was IBM Distinguished Engineer and member of the IBM Academy of Technology. I am a Fellow of the British Computer Society (bsc.org) I'm an information technology optimist.


I was a member of the Linux Foundation Core Infrastructure Initiative Steering committee. Read more about it here.

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