Disks Reliability is the real problem

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gachbash

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May 2, 2013
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Hard disk failure is the biggest disaster that can happen in computer environment. Data lost is too painful to let it happen.
When i buy a hard disk, i want it to be reliable and to work for many many years. Price, size and speed are far less important.
Environment influences reliability too. Disk can fail for external factors.
This is one more reason to backup your data on a media that resides OUT of your computer.
 
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ThomasJ93

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Apr 10, 2013
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So basically what you are saying is that people should make backups often. This is pretty obvious, yet a lot of normal consumers don't do it because of the hassle, the cost of something like an external drive, etc.

The best situation would be as follows: Have your data on the system you use, have it backup to an external drive or whatever as often as you see fit. Then also make sure you have a recent backup somewhere else, let's say a friend or family member.

Something that shouldn't be forgotten either is making sure your backup is good. Imagine your every day drive failing and finding out that your backup hasn't run properly or that your backup is corrupted.

You say you prioritize reliability over the rest. How can you know a drive is reliable before buying it? Even drives that have been reported as incredibly reliable can fail for all kinds of reasons.
 
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ThomasJ93

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Apr 10, 2013
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One great way of preventing data from being corrupted, is using ZFS. It's both a filesystem and sort of a RAID system in one. It's designed to be self healing and pretty much maintenance free.

There's a few downsides to it though. A few of it are:
- Only runs on Solaris and FreeBSD. Support for Linux is still experimental
- Requires quite some memory. You should have 1GB of ram for each TB of storage
- Can't expand your "RAID" array like you can with a RAID 5/6 array.

If there are any Dutch around, this thread on Gathering of Tweakers might help you a lot.
http://gathering.tweakers.net/forum/list_messages/1452380
 
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gachbash

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May 2, 2013
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to summarize:
We should:
Make Backups (minimum once a week) on an external drive.
Keep a monthly copy on one more drive - elsewhere.
Make one more copy of most important data - just in case.


 
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