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Comment Question about throughput (Score 1) 405

"I'm just a simple caveman, ..." with a mainframe background, so I have a question of curiosity here At what point does the bandwidth/throughput of the DMA start limiting the performance of your backup? In my world, DMA for I/O is called a "channel". We have many, and while there are a lot of nuances we could discuss, basically we try to segregate the I/O for the input to backup (disk) and the output of backup (usually tape) , and have the backup task process in parallel as much as possible - my nightly backup, for example, runs 9 parallel tasks, 9 being the limit that this particular backup program has. I could run multiple instances of the program, but then I have to have mechanisms to make sure I don't back up the same disk twice between two concurrent executions; with one instance and 9 tasks I can just say 'back up everything that's online at the moment'. So, the throughput is limited by the performance of the slowest devices, multiplied by the parallelism we are able to achieve. In the PC / server environment, does the DMA limit the I/O capability?

Comment some comments from an actual mainframe systems guy (Score 2) 148

  1. As many have said, this is Windows on a blade, in a frame that is part of the mainframe box
  2. It will most benefit Windows-based applications which access mainframe things on the back end (such as GUI .Net apps with DB2), because the servers are attached through a high-speed internal network.
  3. The system management tool for the hardware will provide unified management of the z/box and the blades, which will help some folk.
  4. There actually was a "Windows" implementation on the mainframe at one time, Bristol had ported Wind/U (a Windows API implementation) to z/OS Unix Systems Services - but after some pushback from Microsoft I believe their license to do so was revoked.

Comment It might not be WebOS (Score 1) 72

Let's not forget that Palm had a lot of good experience developing simple UIs for use on portable devices and they had some good design ideas for not wasting battery life in applications, either. Some of the PDA functionality that Palm was so good at wouldn't be bad to have on a Kindle, really.

Comment We'd maybe give it up, but... (Score 1) 316

We might drop our subscription to our paper, but we have elderly people living with us who prefer their news (and *their* crossword puzzle) on newsprint. I, myself, don't really think it matters what medium my news is delivered on, as long as it's a good news organization (competent at gathering and reporting the facts). I think it also depends what company owns your paper. When Knight owned our local paper it was pretty good. Gannett bought it, and ever since it has shrunk in size, the national news page is now basically a facsimile of the one USA Today prints, and their moves to be "conversational" and "blog-like" have detracted from their ability to convince me that they're a serious news organization. It is also difficult to trust that a news organization is giving me the news correctly when they don't bother to copy-edit what they write any more: as long as the spell checker passes it, it goes in the paper - hence, multiple instances of things like "meat" for "meet",

Submission + - Cabinet / case for two or more motherboards?

TheLoneGundam writes: We have a small home office, basically two tower PCs, a router, and a cable modem (sometimes a laptop but it uses wireless to connect). I would like to transition to something where the towers aren't needed, just any peripherals like SD card readers would be on the desktop, via USB connections, including external HDDs for storage and backup. I was wondering if there are cases made for the SOHO market to hold more than one motherboard (with or without cooling)?

I do not want the "all-in-one" solution with the CPU built into the monitor — I'm moving toward a situation where the data, keyboard, peripherals, and monitor do not have to change when we want to upgrade CPU or memory performance.

Comment Storing/Indexing/Tagging vs. Searching/Finding (Score 2) 254

I've only had time to skim a lot of these comments, so forgive any redundancy, but one of the first questions to ask is: Will you really spend time tagging or organizing things as you add them? Many people think they will, but then don't follow through. Perhaps make sure you have full-text indexing and search - it is costly to implement at times, but might automate some of the work of getting the stuff ready to search.

Comment Adding meaning to HTML is almost exactly backward (Score 1) 192

HTML and CSS are used as a presentation markup language. Adding "meaning" to those is approaching it backward. First, mark up the document / data, using XML or RDF (for this argument the preference doesn't necessarily matter). Then, use XSLT to provide a transform into the presentation language of your choice. I guess we could argue that XHTML _is_ XML at its core, though, so adding attributes to add "meaning" might be doing what I said, anyway. As far as 'why are the big companies agreeing to this, why isn't everyone consulted?' argument - hey, at least we're making progress. If one large group of pages is marked up in a standard way, then that's a lot of "meaning" that can suddenly be extracted and used in our apps / widgets / mashups / things-to-be-named-later-when-someone-thinks-them-up. In that sense, I'm all for it; let's get started! There's also a mechanical precedent for this: think back to when the auto industry in the US decided to standardize the "markup" of wheels with a 5-bolt lug nut pattern, spaced the same way - suddenly wheels were interchangeable, and making special chromed add-ons for people was economically more feasible too. They didn't consult a body of international automobile enthusiasts - Ford, GM, and Chrysler pretty much drove that one.

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