USB drives are a TERRIBLE option for limited budgets. Get an older LTO4 drive (~$1000) and tapes ($20 each). Youll spend slightly more, but avoid issues with...
* Permissions problems on USB drives
* Drive letter changes (whoops! now your backups fail)
* the fragility of the drive (drop it, 80% chance your data is toast, vs tape where you need to be pretty brutal with it to damage it)
* their bulkiness
* the expense of replacing usb drives (the cheapest ones are double the cost of an LTO4 tape)
* the extremely slow speed of USB
Go tape, or go cloud (backed by a permenantly connected USB drive for rapid on-site recovery). Dont do disk rotations, or you WILL regret it.
Tape's read speed per drive is pretty decent actually, and outstrips mechanical harddrives and optical by a fair margin. LTO5 hits 140 MB/s, LTO6 160 MB/s-- and keep in mind that LTO5 hits ~2:1 compression (YMMV), so your storage is now ~5TB and transfer is ~280 MB/s.
Of course, RAID arrays will leave tape in the dust for sequential read, but you arent usually shipping your raid array offsite so its not really a fair comparison.
It is a hint that there might be actually thousands of faulty cables.
No, its not, unless you have more info about how representative those 20 are.
Generally the ones who have problems are the "vocal minority": that is, if you have problems, you are more likely to speak up, so if you're only seeing 20 / 13million, it could well indicate that the problem is quite limited.
Whether it has or has not been eliminated, idle speculation isnt compelling. If you havent studied this and / or had extensive experience with it, you probably shouldnt be composing theories on dark matter.
Im still not sure I understand the issue here. All data is binary, some of it is simply encoded ASCII in a way that many utilities can parse.
But if you have a better encoding that is widely known and supported, who cares if its not ASCII? mySQL isnt ASCII, but you dont here people blowing their lids that you cant fix a borked mySQL instance with cat and vim.
Point being-- I get that its nice for "cat" to "just work" when your system is hosed, but if theres another utility that all distros have that "just works", who cares?
Im pretty sure you can have whatever you want in the way of recording in your house without needing anyone's consent. In public the rules are different sometimes, but I suggest you read here:
Maybe you know of some law I do not that singles out FBI, but AFAIK there is none, and when you are on your property and they come unsolicited, I would be amazed if you could find a judge who would even entertain a federal lawsuit for the recording. Your property-- your rules.
Tape is substantially faster than blu-ray. The highest official speed I can see is 16x, which translates to 72MB/s. LTO5 hits 140MB/s, LTO6 hits 160MB/s uncompressed-- and since LTO compresses data at ~2:1, that speed is generally higher.
Random seeks are bad, sure, but generally you dont do those on archival media.
Nevertheless, it remains a product with a very small operational history. It would still be wildly optimistic to assume that quoted lifespans for the disks will represent what we will see over time.
MO and Bluray are fundamentally different technologies and are not even remotely comparable. MO disks require (IIRC) a bit to be raised to a very high temperature to alter, while bluray just requires the organic dye to degrade (as they all do). Bluray has an impressive operational history of ~8 years, Tape (ie LTO techs) have operational records going back decades.
Calling tape a poor archival choice is hillariously backwards. You'd have to be ignorant or foolish to rely on dye-based mediums like bluray for anything archival.
BD-Rs are write once, which is going to be terribly limited and not give you the full amount of space if you reuse them (ie UDF deletes). Tape hits ~75/150GB per $ (1.5/3.0TB tape for $20), and all of it is reusable.
Slashdot Mirror
Again: Without more information, all of this is wild speculation.
The world needs more facts, not more guessing.
If youre worried about your data, the answer we were looking for is "make backups".
Remember kids, RAID isnt backup.
USB drives are a TERRIBLE option for limited budgets. Get an older LTO4 drive (~$1000) and tapes ($20 each). Youll spend slightly more, but avoid issues with...
* Permissions problems on USB drives
* Drive letter changes (whoops! now your backups fail)
* the fragility of the drive (drop it, 80% chance your data is toast, vs tape where you need to be pretty brutal with it to damage it)
* their bulkiness
* the expense of replacing usb drives (the cheapest ones are double the cost of an LTO4 tape)
* the extremely slow speed of USB
Go tape, or go cloud (backed by a permenantly connected USB drive for rapid on-site recovery). Dont do disk rotations, or you WILL regret it.
He was speaking in relative terms.
Tape's read speed per drive is pretty decent actually, and outstrips mechanical harddrives and optical by a fair margin. LTO5 hits 140 MB/s, LTO6 160 MB/s-- and keep in mind that LTO5 hits ~2:1 compression (YMMV), so your storage is now ~5TB and transfer is ~280 MB/s.
Of course, RAID arrays will leave tape in the dust for sequential read, but you arent usually shipping your raid array offsite so its not really a fair comparison.
It is a hint that there might be actually thousands of faulty cables.
No, its not, unless you have more info about how representative those 20 are.
Generally the ones who have problems are the "vocal minority": that is, if you have problems, you are more likely to speak up, so if you're only seeing 20 / 13million, it could well indicate that the problem is quite limited.
HP's probook line is OK, other than that:
* Samsung
* Asus
* Lenovo
The cables pass quality checks, because maybe are lax
The root problem.
Nothing else you wrote matters if the quality checks are good.
Outsourcing and quality control are separate things, unless you are convinced that things can only be built right in your country.
Whether it has or has not been eliminated, idle speculation isnt compelling. If you havent studied this and / or had extensive experience with it, you probably shouldnt be composing theories on dark matter.
Binary log files?
Im still not sure I understand the issue here. All data is binary, some of it is simply encoded ASCII in a way that many utilities can parse.
But if you have a better encoding that is widely known and supported, who cares if its not ASCII? mySQL isnt ASCII, but you dont here people blowing their lids that you cant fix a borked mySQL instance with cat and vim.
Point being-- I get that its nice for "cat" to "just work" when your system is hosed, but if theres another utility that all distros have that "just works", who cares?
Im pretty sure you can have whatever you want in the way of recording in your house without needing anyone's consent. In public the rules are different sometimes, but I suggest you read here:
http://www.aclupa.org/issues/p...
Maybe you know of some law I do not that singles out FBI, but AFAIK there is none, and when you are on your property and they come unsolicited, I would be amazed if you could find a judge who would even entertain a federal lawsuit for the recording. Your property-- your rules.
If you werent aware, Slashdot is a game whereby you figure out WHICH pieces of the headline and summary are BS.
Congrats on your first win!
Your information is not correct.
Compare:
http://en.wikipedia.org/wiki/B...
Blu-ray 16x = 72MB/s
http://en.wikipedia.org/wiki/L...
LTO3 was faster than Blu-ray; LTO5 is twice as fast, and LTO6 hits 160MB/s.
You dont need to buffer, at all; I've been using LTO for years and if writes to tape just fine without big buffers.
Tape is substantially faster than blu-ray. The highest official speed I can see is 16x, which translates to 72MB/s. LTO5 hits 140MB/s, LTO6 hits 160MB/s uncompressed-- and since LTO compresses data at ~2:1, that speed is generally higher.
Random seeks are bad, sure, but generally you dont do those on archival media.
Looks like you are correct.
Nevertheless, it remains a product with a very small operational history. It would still be wildly optimistic to assume that quoted lifespans for the disks will represent what we will see over time.
Second, supporting someone's right to their own beliefs does not mean I share those beliefs.
Given your user handle it may be appropriate to warn you: On slashdot, speaking up for someone means you must burn alongside them.
Im not clear what intolerance you saw in his post that youre trying to defeat. So far youre CLAIMING intolerance but I dont see it.
By that logic the companies have already paid taxes regardless of this article because they use the dollar.
Whatever sense that makes.
MO and Bluray are fundamentally different technologies and are not even remotely comparable. MO disks require (IIRC) a bit to be raised to a very high temperature to alter, while bluray just requires the organic dye to degrade (as they all do). Bluray has an impressive operational history of ~8 years, Tape (ie LTO techs) have operational records going back decades.
Calling tape a poor archival choice is hillariously backwards. You'd have to be ignorant or foolish to rely on dye-based mediums like bluray for anything archival.
Tape is cheaper. LTO5 tapes are $20 each on newegg, LTO6 is $65 (for ~6TB of space).
BD-Rs are write once, which is going to be terribly limited and not give you the full amount of space if you reuse them (ie UDF deletes). Tape hits ~75/150GB per $ (1.5/3.0TB tape for $20), and all of it is reusable.
Not clear why LTO5 wouldnt be about 5 times better in every regard other than the red herring of water proof-ness.
If they were seriously concerned about price, theyd be using something like LTO5, which is like ~$20/TB.
I dont know much about satellites, but I do think thats how they work.