Alphix

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About Alphix

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    Stockholm, Sweden
  1. Alphix

    need to (partly) connect 2 networks

    A third solution would be the following: Lets assume the host on network A which is to be accessible from network B is called host X. 1) Buy a small firewall/router/switch thingy which also does NAT (I assume it will be something similar to the SOHO router you already have) and give it an IP on network B. 2) Connect all hosts on network A to it. 3) Setup the router to forward all incoming traffic from network B to host X and to only allow outgoing traffic from host X to network B. This has the advantage that you can easily, and temporarily grant access to hosts on network A and that you do not need to do any changes to host X. Disadvantages is that it probably costs a little bit more. The result will be something like: ________ _________ _________ ( ) +-------------+ ( ) +--------------+ ( ) ( Internet )<--->¦ SOHO router ¦<--->( Network B )<--->¦ Extra router ¦<--->( Network A ) (________) +-------------+ (_________) +--------------+ (_________)
  2. First of all, people seem to be a bit confused with regards to probability theory. Lets say (for the sake of argument, not as a matter of fact), that a gereral HD has a 3% failure probability in its first year of operation. With one HD in your PC, you thus have a 3% risk of HD failure during the first year. Or more commonly expressed: P(HD failure) = P(failure of disk 1) = 0.03 = 3% Now, assume you want two identical HD's in a RAID-0 config. Your risk of failure is now: P(HD failure) = P(failure of disk 1 or failure of disk 2 or both) = 1 - P(no failures) = 1 - 0.97 * 0.97 = 0.0591 = 5.91% Thus the risk of failure is almost double that of one disk. Now, with RAID-1, the calculation is thus: P(HD failure) = P(failure of disk 1 and failure of disk 2) = 0.03 * 0.03 = 0.009 = 0.09% Now, how's that for a reduction in risk? Now, this is all statistics of course. And it assumes that all HD failures (drive 1 vs drive 2) are completely unrelated, which is not the case (imagine a PC case which turns out to be poorly ventilated, it will slowly cook both drives). But regard it as a starting point for judging risks with a bit more solid foundation than mere handwaving. Second of all, the "risks" are probably not that interesting anyway....its 100% certain, that without backups, given enough time, you will loose data (RAID-1, RAID-5, RAID-6 etc does not protect against user error, programming errors, viruses, breakins etc). So, go with any solution which suits you, but also invest in a backup solution and use use it wisely.
  3. Alphix

    Tiny USB Drive

    Hi all, I am currently looking for a genuinely tiny USB keydrive. The storage space doesn't matter much but I would like to find the smallest physical size possible. I've seen lots of drives that are approx. 2 inches long, but preferably I'd like something even smaller. Any ideas?
  4. Oh...and to try to bring this discussion somewhat back on topic: I would definately go for an open source implementation of any crypto with which I entrusted keeping me out of prison. The reasons are quite simple, "commercial" offerings tend to be less than ideal since crypto is a *hard* science and companies often cut corners. Furthermore, unintentional bugs sneek in and go undiscovered since noone can study the sourcecode (except the creators). Ask any cryptologist and they will sneer at most commercial offerings. For more background, read up on the material written by Bruce Schneier, also his Crypto-Gram (http://www.schneier.com/crypto-gram.html) provides interesting context (see the DogHouse section for some horror examples). So, personally, I'd go for Linux and dm-crypt.
  5. 100% correct. Listen to this man. He knows what he’s talking about. The conclusion of this thread is only that legal advice should not be sought on Storagereview (or on the Internet). I would like to know what Future Shock, pico1180 and others base their views on other than personal beliefs and guesses pulled out of thin air. Personally I think you should look at two court cases: In Doe v United States, 487 US 201, 219 (1988), Justice Stevens wrote: “[a defendant] may in some cases be forced to surrender a key to a strongbox containing incriminating documents, but I do not believe he can be compelled to reveal the combination to his wall safe--by word or deed.†In United States v Mitnick, May 20, 1998 proceedings, Judge Phaelzer did not order Mitnick to hand over the encryption key to encrypted files found on his laptop even though the government was unable to break it. On the other hand, he didn't get his data back. An no, I'm not an American, but is it really that hard to read up on a topic beforehand?
  6. Alphix

    Swap file where

    So? Linux pages as well. Old habits die hard so swapping and paging tend to be used to describe the same thing (paging) even though computer science distinguishes between them. The use of a partition or a file as the secondary storage and the "visibility" of the associated drive letter has no relation to the fact that Windows pages.
  7. Alphix

    Adaptec 2400a

    No longer available, sold it today. Thanks for the interest people...
  8. Alphix

    Adaptec 2400a

    Hi, I'm selling an Adaptec 2400A 4-port IDE RAID card, about one year old, barely used and in great condition. SR review: here Tech specs: here The suggested retail price is $390 and the lowest price I could find on the Internet was about $320 (just a quick search), so a fair price might be about $160. I'm in Sweden, but can accept payments trough PayPal and ship internationally for ten dollars or so (we'll split the shipping costs). Have sold goods previously trough SR without any problems. If you're interested, send me an email at: david (AT) 2gen.com
  9. Hi, I found a freaky old case that I plan to use for my next project. However the 3,5" bays are vertical (not vertical in that the drives are resting on their sides but vertical so that the cable connectors face down towards the ground). I was just wondering if anyone knows if being mounted in this orientation can be harmful to modern hard drives (Maxtor D740X in this case) and if there are any other negative consequences? (Noise, performance, MTBF etc?) Regards, David
  10. Alphix

    SCSI-kit

    HD: Seagate Cheetah 18Gb 10.000RPM U2W DVD: Pioneer DVD-305 Slot-in SCSI2 CD: HP CD-RW 9600si SCSI2 Adapter: Adaptec 29160 + cables This is the kit for you if you want to move to an all-SCSI system. The DVD drive is region-free, everything is working just great (the reason I'm selling is that I got a great deal on a used Adaptec 2400A IDE-RAID card). Parts are approx 1 year old. Original price: approx 1060EUR / 940$ / 650£ / 9600SEK Price: approx half of the original price (something like 390$, mail me) I'm a serious seller, located in Stockholm, Sweden...mail me and we'll work out the payment/shipping details. David Härdeman david@2gen.com