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bio website vertigrated.com/blog
location Atlanta, GA
age 46
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Director of Technology

A software developer since the mid-80's I ran a successful consulting business for 15 years. I have worked for everything startups and international companies that did billions of dollars a quarter in profit.

As a technology consultant I made a career out of finding the next job, learning more about my clients business than they knew and giving them direction to future successes. I have comprehensive experience with both software and hardware development companies.

I have extensive experience as a hiring manager as well, earned from years of experience building, teaching and managing creative Agile Technical teams.

Extensive Answers are in my GitHub repository


Jul
15
comment Does full-disk encryption on SSD drive reduce its lifetime?
4MB unencrypted will be 4MB encrypted, with compression it may get minuscule amount larger depending on the compression format meta-data. All modern compression techniques can identify un-compressible data very quickly by checking magic number bytes, headers or with only a sample of a few kb in most cases. But again, the question isn't about compression, it is about a false assumption about how SSD and filesystems work and how they work together. So 4MB of data would take the same number of writes, it is 4MB of bits, there is no penalty for un-compressed data, just no benefit of less writes.
Jul
15
comment Does full-disk encryption on SSD drive reduce its lifetime?
this is an exact duplicate of superuser.com/questions/57573/…
Jul
15
comment Does full-disk encryption on SSD drive reduce its lifetime?
@JohnBartholomew there is no "worse in space" consideration in the SandForce straw man, their documentation states that they can't use the "left over space" in anyway, so it isn't wasted, it would have been used anyway and can't be "reused" or "reclaimed". They do this secret compression only to save writes as per their own documentation. The is only a time component that is variable, and they say it is negligible because of their proprietary/secret sauce!
Jul
15
comment Does full-disk encryption on SSD drive reduce its lifetime?
@JohnBartholomew I said, filesystems, which come before disk controllers. And to your unrelated point, the SandForce compression scheme supposedly detects "uncompressable" or "precompressed" data and doesn't compress it in its attempts to miminize writes, this is a secret so we will never know for sure. Either way, it doesn't take up more space, just more time in that specific case.
Jul
15
comment Does full-disk encryption on SSD drive reduce its lifetime?
encrypted data isn't bigger it is just encrypted, encryption doesn't cause the data to grow in size. who uses automatically compressing file systems in 2012?
Jul
15
comment Does full-disk encryption on SSD drive reduce its lifetime?
@Synetech SSD don't actually have clusters or sectors as traditionally defined in relationship to HD; those are implementation details of spinning media and filesystems. clusters in particular a filesystem specific. Older SSD has 512b sector, AF has 4kb ( maps to 512b for compatibility ), newer drives claim 8kb but are in most cases firmware tricks over 4kb still. Unlike spinning disks, SDD can write only 512b to a 4kb sector without having to touch any unrelated sectors, because the 4kb sector is a logical sector made up of a collection of 512b physical sectors. Format size is irrelevant.
Jul
15
comment Does full-disk encryption on SSD drive reduce its lifetime?
The concern with full disk encryption is that DISCARD/TRIM is usually disabled for security reasons. All SSD drives have a logical 4kb block size, the actual underlying implementation below this layer is kept secret by most manufacturers, even with the newer drives that show as 8kb page sizes, they are still 4kb under the covers with firmware doing translations. None of this is a concern the firmware does the correct thing with concatenation of writes so the assertion that encryption adds anything much less 8X writes is ignorance of encryption and filesystem and firmware write strategies.
Jun
27
comment Why does 64-bit Windows need a separate “Program Files (x86)” folder?
Windows has had Win32 Portable Executable File Format (PE) since 2002, which was designed just for the seamless transition to 64 bit executables. They could have spent the time to make a transparent system that just worked, they could have modified the exe loader, and all the .dll files are listed in the registry. Finding and using the correct ones isn't that big of a deal, it just takes wanting to do it. As usual this is primarily because of Microsofts culture of short sightedness. If they valued backward compatibility highly they would make things like this more elegant and seamless.
Jun
27
suggested suggested edit on Why does 64-bit Windows need a separate “Program Files (x86)” folder?
May
28
comment Java doesn't save preferences?
it is impossible to install Java 1.5 on 10.7.4, they quit actually shipping an actual 1.5 JVM with Leopard.
Mar
31
awarded  Yearling
Mar
29
revised Is Unix not a PC operating system?
corrected BSD claim and added details, and citations about OSX actually being UNIX certified since Leopard.
Mar
29
comment Is Unix not a PC operating system?
You professor needs to define specifically what they mean by PC and what they mean by UNIX. Because both are vague and ambiguous. Many people say UNIX and actually mean UNIX-like because UNIX is a trademarked brand and requires certification to be able to use the term. And everyone uses PC to generally mean Windows compatible.
Mar
29
suggested suggested edit on Is Unix not a PC operating system?
Feb
27
awarded  Commentator
Feb
27
comment Can I have 8 GB RAM on 32-bit Win 7?
@Pangea maybe because they don't know what they are talking about. Even with that PAE hack, which is incorrectly described as letting you use more than 4GB of RAM per process, it doesn't. You are still limited to something like 2GB per process. And it is a complete hack, it will probably break existing already broken non-64bit apps and other nasty side effects like not being able to update the system correctly. Again, what about "you can't do this" is not clear.
Feb
27
comment Can I have 8 GB RAM on 32-bit Win 7?
What part of the multiple times being told from multiple sources and Microsoft themselves you can't use more than 3.8GB of RAM in 32 bit Windows do you still not understand?
Feb
21
revised Can I encrypt data in a way that it can be read normally but can't be copied or edited?
clarifying question
Feb
21
suggested suggested edit on Can I encrypt data in a way that it can be read normally but can't be copied or edited?
Feb
20
comment Can I encrypt data in a way that it can be read normally but can't be copied or edited?
reading is nothing more than copying to memory and when in memory it is compromised at that point.