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I am buying a desktop from Dell, they have an option 2 x 500GB 7200 RPM 2.5" SATA Hard Drive with Raid 0. I Googled about Raid 0 and found that it provides best performance.

But I am confused about disk space I will get. If I choose 2 x 500GB with Raid 0 then what disk space I will get 500 GB or 1 TB ?

Another question is: which will be better Raid 0 or Raid 1 ? I need good speed and performance but at the same time I don't want my system to be crashed.

Please check and advise, which one will be better and what disk space I will get.

djmzfKnm
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1 Answers1

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RAID 0 stripes your data across both disks. This means that every file is read from 2 places at once, giving significantly higher speed. Also, you get essentially the sum of the two disks ' space (so around 1 TB in that example) However, this comes at a cost - because the file is split across both disks, you're completely hosed if one breaks. In a normal two-disk setup, one disk can break and you can still recover data off the other; with RAID 0, it becomes very hard to recover ANYTHING if one disk has an issue. There is no redundancy.

RAID 1 is the simplest "real RAID". It is effectively mirrored disks, so you would just get 500 GB in your example. However, a RAID 1 system can still operate if one disk fails (in fact, it won't even shut off - it will just continue running like normal).

Which one is better depends on priorities. If you don't want to lose data, avoid RAID 0. If you want performance above reliability, RAID 0 can be a nice choice.

cpast
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