Whisky-dave
I doubt the cloud is entirley made up of SSDs, there's a reason for that.

nospam
ssd would be a waste for the cloud, as any speed advantage would be wasted.

Whisky-dave
But you've calimed they are more relible, there's as yet not enough evidence to claim that.

I'm really not sure which would be the most *relible* a SSD of around 512Gb or spending that amount of cash on 512Gb HDDs and keeping clones as backups.

The good SSDs have similar life spans to HDDs.

nospam
actually much better than hd.

Whisky-dave
In theory and as yet unproven.

they aren't quite as good with updating data in small files especailly as the disk becomes full, SSDs can't overwrite existing data,

nospam
of course it can.

Whisky-dave
No it can;t it's the technology behind it.

nospam
copy new files to it and whatever was there before is overwritten. it's that simple.

Whisky-dave
No it's not.

what it does is when needed it has to erase data before writng the changes, it has to copy the file to another location first.

nospam
so what? that's done internally and transparent to the host.

Whisky-dave
to the host, whatever you mean by thay, but it takes extra time and resources.

Although I wouldn;t say it a major problme for most unless they fill thier SSD. Hopefully the new FRAM SSDs will overcome is.

nospam
it's not a problem at all.

Whisky-dave
It is that's why they are developing new types of SSD and even currebntly they are diffent types. http://www.kingston.com/en/ssd

Re-writables then to home burnt ones because they refelct less laser light

than commerial CD/DVDs as they have a refective coating added.

Could be iimportent if you back-up to such media.

nospam
it's a non-issue, since all optical drives made in the last 20 years or so can read writeable discs.

Whisky-dave
you've not heard of DVD cleaners ? Shows you how little you know about the subject.

nospam
however, dropping or improper handling can scratch it but that doesn't usually matter much since the data is below the surface and any scratches make very little difference unless they're fairly big. a little scuffing is not going to cause data loss.

Whisky-dave
depends on the direction of the scuff also.

nospam
no

Whisky-dave
Yes it does, just like records or even words on paper.

I've never lost my house keys, but I;ve needed to use my duplcate set. My keys were inside the house, but I needed my backup.

nospam
irrelevant comparison.

Whisky-dave
then stop using the word LOST becaus eit has no meaning here.

I'm sure we've all lost something and had someone tells us no you left you're

lens cap here or I picked up your lighter, it was on teh floor sort of thing.

nospam
you don't leave your data on the couch.

Whisky-dave
and you don't loss data it becomes corrupted and that is what people say they have lost data.

nospam
if there's *any* problem with the original, you get a backup copy.

Whisky-dave
But you have to know there's a problem.

With the word LOST in computer terms it measn it's not where it expects the file to be.

nospam
lost means the data is gone.

Whisky-dave
No it does not. I guess you've never come across the LOST+FOUND directory have you.

http://unix.stackexchange.com/questions/18154/what-is-the-purpose-of-the-lostf ound-folder-in-linux-and-unix

Even when you delete a file all that happens is that data is changed no data is lost useful information might derived from the file.

nospam
if you delete a file, it's gone.

Whisky-dave
No it's not, all that happens is the start and end locations amonst others of the file are 'zeroed out' for the want of a better word , thats how some recovery programs work.

nospam
actually what happens is the directory entry is changed.

Whisky-dave
ONLY yes the file still exists.

nospam
the file data itself is still there, but none of that matters. as far as the user is concerned, the file is gone and they need to get a backup copy.

Whisky-dave
That's how recovery programs work, because the file has NOT gone. You can auctually still see the data using disc editing tools.

nospam
a recovery app can get at the old data, assuming it hasn't been overwritten by *another* file, which it often is by the time the user realizes the file is gone,

Whisky-dave
that's what I mean in that you have to knbow the file is gone to know you have lost it.

nospam
but why bother with all that when you can easily pull the file off a backup.

Whisky-dave
That's why you keep backups for when things do go wrong, which can happen on any sort of media whether it be user error or a system failure or even theft. But in all of these you jhave to know you are missing something before you bother goinf to recover it.