I've used JFS on an IBM mainframe and on my Linux workstation.
Last time I checked, the pSeries and the iSeries are not considered "mainframes", and I KNOW the zSeries doesn't use JFS...
So, on the pSeries (IBM's AIX box), you have the option under V5R4 (The current version) to run JFS or JFS2. JFS2 has some performance improvements (They never advertise a degrade, do they?) as well as being able to separate the journal from the data (inline vs. not)
Keep in mind that a *flakey* system can cause you to lose data on any filesystem. IMHO, EXT3 is the most fragile of the Linux Journalling FS's. Reiser3 a good, fast desktop FS (I ususally use Reiser3 for everything but/boot (EXT2/3) and/home (JFS)), but if you want server-class reliability and performance, it's JFS followed closely by XFS (JFS being the speedier of the two, in _most_ of the serving cases I've experienced)
As a side note, you always have to keep XFS as an option, since it allows for synchronized point-in-time snapshots (using LVM and xfs_freeze), something none of the other FS's offer on Linux. On a busy DB or mail server this is a major bonus if data integrity is of the utmost. The only thing better is apllication quiescing, but again, on a busy server this may be less than optimal. Anyone who has had to replay journals to bring data back in sych know to what I'm referring.
I was fortunate (?!?) enough to have dealt with the custom framebuffer card for the XapShot. Back in the day, I was working for a photographic lab (what's that?) that had a Canon CLC (later renamed the CLC-1) and a Canon CLC-500. We had the Canon IPU (connected to the CLC-500) which was capable of video capture.
A little local company (GE) used these cameras to capture jet engine defects. They would bring in the camera, we would hook it up to the IPU and print color copies. Quite a pain as there wasn't any software to save the images in any standard format. Eventually I wrote a TSR which, when activated with a key-combination, would write the buffer out to a floppy disc. Ahh, those were the days;)
Holy shit dude! People thought I was crazy when I told them about the Aroma Disc! We had one of these babys back in the day. I can smell the odor now. Disc Cameras, Compact Disc Players, Aroma Discs... Is there ANYTHING the disc can't do?
I always figure that writes have to be slower on a RAID 1 setup (vs. a single drive) if only due to the protocol overhead. Also, I guess it would depend on the controller card (or software in the case of kernel RAID or whatnot) whether the advantage of sequential reads across multiple drives would be used in RAID 1 as RAID 0 does.
The general idea is (This isn't comprehensive -- go HERE and click on the numbers for more information)
RAID 0 = No data security, fastest reads, fastest writes.
RAID 1 = Redundant data, moderate reads, slower writes. Depending on setup, can sustain multiple concurrent drive failures
RAID 5 = Better than 0 for data security (but not as good as 1) and faster than 1 for read / write but not as secure. Cannot sustain multiple concurrent device failures.
RAID 1+0 = Stripes over mirrors. Requires a minimum of 4 drives to implement, but has the same data security as RAID 1 (in a similar configuration). Better read/write performance than RAID 1.
Actually, I've never known Silver, Gold or Aluminum to rust...
The "flaking problem" is / was quite common with poorly manufactured CDRs. (The OLD cdrecordable.com's discs were notorious for this) IMHO, Always look for the big three (If you do any "tape-trading" you will start to see a trend of what people will and wont accept): Mitsui, Taiyo Yuden and Kodak. Stay away from CMC Magnetics for your archival stuff (Seems to be about every brand out there). CMC has improved over the years, but they are still at the bottom of the scale.
Get yourself an ATIP reader (Windows version "cdrecord -atip" for linux) and you will be able to tell your cheap CDRs from the good ones. For instance, Fuji brand (not FujiFilm) with the spin-on top-holder are Taiyo Yudens;)
then switched the input over to the tape deck playing a nice type 3 audiocassette (from CD).
Ahh... The good old days. The Type III was definitely my favorite compound. FerroChrome 120microsecond High Bias BASF;) Or was it 70microsecond Normal Bias DOH! It's been a long time.
-FB
Re:Perhaps there is a reason...
on
DVHS on a Budget
·
· Score: 1
"The more expensive dual-sided floppies we used at work at the time were much more reliable."
Yeah, but those pricier dual-sided floppies weren't meant to be spun backwards either. The drives just happened to have two heads...
I still have notched (I was too cheap to buy one of those $30.00 nibblers) floppies for my Atari 800 that still work after all these years. But that's really a moot point as I have brand NEW floppies that fail to format, even spinning in the proper direction.;)
In the case of DVHS v. SVHS tape, I don't think there is any felt to worry about, and I would be willing to bet that the tape for SVHS and DVHS comes off the same 5000ft spools. But, that's just a hunch.
The iGel is really sweet. It's definitely the best (most versatile) thin client I've used to date. Check out IGel's company page, or for a reseller go to Computer Products Corporation's site and send an email to Jeff Kalberg. Make sure to tell him Feige sent ya.;)
In all seriousness, I've deployed quite a few IGels with great success. They are designed around the same hardware as the NEOware, but with MUCH better firmware. I've been able to do some miraculous things with them. Jeff K. can tell you about quite a bit. I believe IGel's site has an online demo to boot.
It's like the "DUI Checkpoints" that we have here in OH. On one fairly recent weekend, a small suburb of Cincinnati pulled over 2500 cars. Out of the 2500, they got 3 DUIs and "hundreds" of other infractions ranging from expired tags to possession of mary jane. Oh, and one "wanted" individual (bench warrant). Nice to see that they are keeping the streets safe.
If you are in line for one of these checkpoints, you do not have the capability of turning around and going another way, as you will be followed and pulled over.
Right at the moment, they have to announce the location and timeframe of these checkpoints on local media. It's not a far stretch to say that a rash of alcohol-related accidents (a statistical blip) would be enough for the state to change that law.
It's scary to think that people don't see the wrong in this type of behavior.
It seems logical that those who can afford it, would want to give their children every advantage (even if it is perceived). Buying an Apple, which as a bonus, comes with a snobby-factor only superceded by the new 5-series to be received for graduation, gives them that perceived advantage. The maid and butler also allow said students more time for studies.
Just goes to show that people with money get into the better schools...
I would have to wholeheartedly agree. I've been using Apple computers in production environments since the II (Yes, that's the PLAIN II - oh how I lusted for the IIfx).
There was a time when the Mac was definitely a superior platform to do graphics work. I recall when Ulead's photo editing packages was the only thing the PC users had. But I digress.
Forward to today. I no longer have my printing business and am now doing network diagnostics/repair etc. I also have many clients from my old industry and most of them are Macintosh based. (they might have a PC sitting alone in the corner for the occasional PC job) I would not consider any of my Mac-shop clients to be any more intelligent than my PC-shop clients. Truthfully, it seems that the Mac users blissfully forage ahead *knowing* that they have chosen the superior platform, without any real knowledge to back it up.
Just like back in my printing days, you are generally more likely to find a PC user that is capable of giving the Mac shop the type of file that they need, vs. a Mac user being able to give the PC shop the type of file they need. PC users seem to be more comfortable with different file formats and such. This may be misguided, or at least offset by the few extremely stupid people I've come across.
Also, don't forget, but the Mac was extremely virus prone in the early days. Hell, it was one of the humorous points I used to make. On the pre-BSD Mac OSs, you could contract a virus just by inserting a disc. Yes, it was actually running a program when it placed that icon on your desktop, but since there weren't ANY computers connected to the internet (Yeah, I even ran a dial-up BBS for my company circa 1989-1994) viruses didn't get any real attention.
I guess what I'm trying to say is that *most* people really don't know why they like what they like, but I'll bet that there are plenty of blinking 12:00 (or 88:88) VCRs in both Mac and PC users households.
I think what you are looking for is
IE View. It's a great extension that allows you to right-click on a link and have it open in IE. I use it for all of my clients.
Of course, they key is to get them to NOT use IE for everything else once it's loaded:P. If I don't think they are bright enough to figure out what they are doing, I just don't give 'em that extension. I will reiterate, once you show them tabbed browsing, they don't want to use IE unless they need to anyway.
A couple of my friends are dial-up only and quite content. Actually, one of them is a JSP and Oracle guy, who works for the gov't. The really humorous part to me is that he has no knowledge of how computers *work*, but he is one hell of a programmer.
I also seem to notice that the friends without broadband seem to accomplish more and lead happier lives. Their lawns are not 8" tall all the time, the cars are always clean and they seem to keep a more tidy abode. Coincidence? Hmm...
Now where did I put that Slack ISO? Ahh, I'll just download it again. While I'm doing that, I might as well go check out Slashdot or Fark. My grass can wait 'til another day. Like I care what the neighbors think...
Slashdot Mirror
Now, that's efficient code :)
Wikipedia Fork Bomb
Fair enough... I guess I added a little enthusiasm for the format I love so much :-D
Vorbis "Ogg" kicks mucho butt when compared to AAC. Not that AAC is horrible or anything... http://en.wikipedia.org/wiki/Vorbis
Last time I checked, the pSeries and the iSeries are not considered "mainframes", and I KNOW the zSeries doesn't use JFS...
So, on the pSeries (IBM's AIX box), you have the option under V5R4 (The current version) to run JFS or JFS2. JFS2 has some performance improvements (They never advertise a degrade, do they?) as well as being able to separate the journal from the data (inline vs. not)
Keep in mind that a *flakey* system can cause you to lose data on any filesystem. IMHO, EXT3 is the most fragile of the Linux Journalling FS's. Reiser3 a good, fast desktop FS (I ususally use Reiser3 for everything but /boot (EXT2/3) and /home (JFS)), but if you want server-class reliability and performance, it's JFS followed closely by XFS (JFS being the speedier of the two, in _most_ of the serving cases I've experienced)
As a side note, you always have to keep XFS as an option, since it allows for synchronized point-in-time snapshots (using LVM and xfs_freeze), something none of the other FS's offer on Linux. On a busy DB or mail server this is a major bonus if data integrity is of the utmost. The only thing better is apllication quiescing, but again, on a busy server this may be less than optimal. Anyone who has had to replay journals to bring data back in sych know to what I'm referring.
-FB0
A little local company (GE) used these cameras to capture jet engine defects. They would bring in the camera, we would hook it up to the IPU and print color copies. Quite a pain as there wasn't any software to save the images in any standard format. Eventually I wrote a TSR which, when activated with a key-combination, would write the buffer out to a floppy disc. Ahh, those were the days ;)
-FB
Holy shit dude! People thought I was crazy when I told them about the Aroma Disc! We had one of these babys back in the day. I can smell the odor now. Disc Cameras, Compact Disc Players, Aroma Discs... Is there ANYTHING the disc can't do?
I always figure that writes have to be slower on a RAID 1 setup (vs. a single drive) if only due to the protocol overhead. Also, I guess it would depend on the controller card (or software in the case of kernel RAID or whatnot) whether the advantage of sequential reads across multiple drives would be used in RAID 1 as RAID 0 does.
:)
Too much information to keep up with
-FB
RAID 0 = No data security, fastest reads, fastest writes.
RAID 1 = Redundant data, moderate reads, slower writes. Depending on setup, can sustain multiple concurrent drive failures
RAID 5 = Better than 0 for data security (but not as good as 1) and faster than 1 for read / write but not as secure. Cannot sustain multiple concurrent device failures.
RAID 1+0 = Stripes over mirrors. Requires a minimum of 4 drives to implement, but has the same data security as RAID 1 (in a similar configuration). Better read/write performance than RAID 1.
Hope that's helpful
-FB
Actually, I've never known Silver, Gold or Aluminum to rust...
The "flaking problem" is / was quite common with poorly manufactured CDRs. (The OLD cdrecordable.com's discs were notorious for this) IMHO, Always look for the big three (If you do any "tape-trading" you will start to see a trend of what people will and wont accept): Mitsui, Taiyo Yuden and Kodak. Stay away from CMC Magnetics for your archival stuff (Seems to be about every brand out there). CMC has improved over the years, but they are still at the bottom of the scale.
Get yourself an ATIP reader (Windows version "cdrecord -atip" for linux) and you will be able to tell your cheap CDRs from the good ones. For instance, Fuji brand (not FujiFilm) with the spin-on top-holder are Taiyo Yudens ;)
Hope that's useful to someone.
-FB
I still have notched (I was too cheap to buy one of those $30.00 nibblers) floppies for my Atari 800 that still work after all these years. But that's really a moot point as I have brand NEW floppies that fail to format, even spinning in the proper direction. ;)
In the case of DVHS v. SVHS tape, I don't think there is any felt to worry about, and I would be willing to bet that the tape for SVHS and DVHS comes off the same 5000ft spools. But, that's just a hunch.
-FB0
Stroker Ace: "I know you! You're Audrey Meadows!".
Aubrey James: "No, I'm Audrey James... AUBREY James... Schmuck!"
-FB0
In all seriousness, I've deployed quite a few IGels with great success. They are designed around the same hardware as the NEOware, but with MUCH better firmware. I've been able to do some miraculous things with them. Jeff K. can tell you about quite a bit. I believe IGel's site has an online demo to boot.
Hope it helps.
-Jeff
Hey! It's nice to know that the comic-book guy DOES exist.
Requesting new moderation level Mod +1 Genius
This is funny, but I think it really should have been modded Insightful.
Actually, we need a new mod: Brilliant.
-FB
If you are in line for one of these checkpoints, you do not have the capability of turning around and going another way, as you will be followed and pulled over.
Right at the moment, they have to announce the location and timeframe of these checkpoints on local media. It's not a far stretch to say that a rash of alcohol-related accidents (a statistical blip) would be enough for the state to change that law.
It's scary to think that people don't see the wrong in this type of behavior.
-FB
Just goes to show that people with money get into the better schools...
-FBPC = Windows boxen
-FB
There was a time when the Mac was definitely a superior platform to do graphics work. I recall when Ulead's photo editing packages was the only thing the PC users had. But I digress.
Forward to today. I no longer have my printing business and am now doing network diagnostics/repair etc. I also have many clients from my old industry and most of them are Macintosh based. (they might have a PC sitting alone in the corner for the occasional PC job) I would not consider any of my Mac-shop clients to be any more intelligent than my PC-shop clients. Truthfully, it seems that the Mac users blissfully forage ahead *knowing* that they have chosen the superior platform, without any real knowledge to back it up.
Just like back in my printing days, you are generally more likely to find a PC user that is capable of giving the Mac shop the type of file that they need, vs. a Mac user being able to give the PC shop the type of file they need. PC users seem to be more comfortable with different file formats and such. This may be misguided, or at least offset by the few extremely stupid people I've come across.
Also, don't forget, but the Mac was extremely virus prone in the early days. Hell, it was one of the humorous points I used to make. On the pre-BSD Mac OSs, you could contract a virus just by inserting a disc. Yes, it was actually running a program when it placed that icon on your desktop, but since there weren't ANY computers connected to the internet (Yeah, I even ran a dial-up BBS for my company circa 1989-1994) viruses didn't get any real attention.
I guess what I'm trying to say is that *most* people really don't know why they like what they like, but I'll bet that there are plenty of blinking 12:00 (or 88:88) VCRs in both Mac and PC users households.
-FB
Of course, they key is to get them to NOT use IE for everything else once it's loaded :P. If I don't think they are bright enough to figure out what they are doing, I just don't give 'em that extension. I will reiterate, once you show them tabbed browsing, they don't want to use IE unless they need to anyway.
Ahh... But have you actually looked at sticker prices for VW lately? :: KIA:Mercedes.
Perhaps it should be Linux:Mac
Redone fairly recently by the Texas Tornados (Partly Sir Douglas Quintet and Freddie Fender)
I also seem to notice that the friends without broadband seem to accomplish more and lead happier lives. Their lawns are not 8" tall all the time, the cars are always clean and they seem to keep a more tidy abode. Coincidence? Hmm...
Now where did I put that Slack ISO? Ahh, I'll just download it again. While I'm doing that, I might as well go check out Slashdot or Fark. My grass can wait 'til another day. Like I care what the neighbors think...
Thank God for broadband.