RAID 0 Vs RAID1

[panda_boy]

just a quick question. How safe is RAID 0 does it often fail is Raid 1 a better option?

[BlackX]

just a quick question. How safe is RAID 0 does it often fail is Raid 1 a better option?

Depends on HDDs but RAID 0 is quite safe if you are running only 2 HDDs ;)

For bigger amount of drives I suggest RAID 5 cause RAID 1 is popular only among servers :)

[Aramdin]

Depends on various variables

-Which HD's?
-What kind of cooling for your HD's?
-Which chipset for the RAID array?

Raid 1 is safer, if one HD in a raid0 array fails, you lose all your data. Raid0 gives you twice the HD space.

Example
You have 2x 160GB drives

Raid 0 = 320GB array
Raid 1 = 160Gb array

[Sanborn]

This is what I am doing, because I just took the leap from IDE to SATA.

I have 2 HDD's in RAID0 and I am going to use an older 120GB IDE drive in an external enclosure that has a IDE to USB adapter inside. That way I have a USB device that I can rely on to hold my backups and its not connected to my system (plus its mobile). So now all I have to do is every week or so backup certain folders off my raid system onto this external drive.

its my understanding that if you go RAID0 that this may be a computer where data can easily be replaced, aka windows/games/programs.

Don't throw your tax info and family pictures onto this system unless you have a good backup plan. That way you don't have to lose a HDD to redundancy and you can be somewhat safe with your data.

[uOpt]

Simple statistics. Let's define failure as "lose all your data".

If your base single harddrive has a failure rate of once every two years (0.5/year or 730 days between failures) then a two-disk raid-0 will fail 0.75/year (or once every 1.333 years or 487 days between failure).

Losing the data on a raid-1 involves more input data as the time that you need to re-insert a new disk make a difference. Once one disk fails you need to replace the broken drive before the remaining one fails. Even if you ignore changing the disk, raid-1 with those two disks mentioned for raid-0 will have a failure rate of 0.25/year (or once every 4 years or 1460 days between failures).

Of course raid-1 from that onboard sata raid junk won't actually do that but that's besides the point.

And of course there are other parameters messing with the equoation. Namely, two drives compared to one in the typical PC are inherintly raising the chance of failure due to more heat and power consumption. Also, a part of the base failure rate is actually catastrophic events like the PSU blowing up all connected components or lightning hitting your home that kill both drives simultaneously. Also, don't forget that corrputing your data from bad software, bad memory or pilot error is also common. All these ruin the theoretically impressive failure rates of raids.

[panda_boy]

This is what I am doing, because I just took the leap from IDE to SATA.

I have 2 HDD's in RAID0 and I am going to use an older 120GB IDE drive in an external enclosure that has a IDE to USB adapter inside. That way I have a USB device that I can rely on to hold my backups and its not connected to my system (plus its mobile). So now all I have to do is every week or so backup certain folders off my raid system onto this external drive.

its my understanding that if you go RAID0 that this may be a computer where data can easily be replaced, aka windows/games/programs.

Don't throw your tax info and family pictures onto this system unless you have a good backup plan. That way you don't have to lose a HDD to redundancy and you can be somewhat safe with your data.

I think i will do the same as you sanborn. I want a nice fast quiet HDD in raid 0 and i will get an external back up unit. Ta for the help guys :)

[panda_boy]

This is what I am doing, because I just took the leap from IDE to SATA.

I have 2 HDD's in RAID0 and I am going to use an older 120GB IDE drive in an external enclosure that has a IDE to USB adapter inside. That way I have a USB device that I can rely on to hold my backups and its not connected to my system (plus its mobile). So now all I have to do is every week or so backup certain folders off my raid system onto this external drive.

its my understanding that if you go RAID0 that this may be a computer where data can easily be replaced, aka windows/games/programs.

Don't throw your tax info and family pictures onto this system unless you have a good backup plan. That way you don't have to lose a HDD to redundancy and you can be somewhat safe with your data.

I think i will do the same as you sanborn. I want a nice fast quiet HDD in raid 0 and i will get an external back up unit. Ta for the help guys :)