RAID's odyssey
As now I have a job and a pay, I’m going to be able to afford an upgrade on my PC that I have been wanting for a long time, hard drive. I have decided to improve my system performance and to do that I am going to make use of a characteristic from my motherboard (and now in almost any other) that is the hard drive RAID.
RAID comes from "Redundant Array of Independent Disks", and it is a method to combine two or more hard drives in a single logical drive, we could have 4 hard drives and the system will only see one unit. And for what? I will explain to you.
There are 9 types of RAID configuration that I read about, but from time to time a new one is developed. My motherboard only works with 3 basic types, although useful, and those three I will explain. Depending on which mode we use we will have some characteristics or others. It is like buying a vehicle. According to what we are going to do we will buy a tourism, a 4x4 or a van.
JBOD (Just a Bunch of Drives) it consists on adding hard drives to the virtual unit. This way we can combine, for example, 4 hard drives to make a single logical drive. When a data is saved, this is stored in one single hard drive, there is no redundancy and if a hard drive fails we lose only the information that had been stored in that hard drive.
RAID 1 (Mirroring Data) is a way in which security is priority. A hard drive will be the main one and the rest of them will serve to keep an exact copy from the main one (therefore they must be of the same or higher capacity than the main one) If at any time the main hard drive fails, automatically, the system would use the next hard drive. A system useful for places where losing information and not been able to access the information is not an option.
And finally, RAID 0 (Striping Data), the one I want to use. With this RAID performance is optimized. For optimal results it is required that the hard drives were the same model. The units of the RAID are used in parallel to read and to write data so, theoretically, performance is multiplied as many times as units we have in the RAID. It does not give any improvement on security as RAID 1 does. If a hard drive fails, we will lose all the information as always happens in the domestic systems.
See more on Wikipedia
RAID comes from "Redundant Array of Independent Disks", and it is a method to combine two or more hard drives in a single logical drive, we could have 4 hard drives and the system will only see one unit. And for what? I will explain to you.
There are 9 types of RAID configuration that I read about, but from time to time a new one is developed. My motherboard only works with 3 basic types, although useful, and those three I will explain. Depending on which mode we use we will have some characteristics or others. It is like buying a vehicle. According to what we are going to do we will buy a tourism, a 4x4 or a van.
JBOD (Just a Bunch of Drives) it consists on adding hard drives to the virtual unit. This way we can combine, for example, 4 hard drives to make a single logical drive. When a data is saved, this is stored in one single hard drive, there is no redundancy and if a hard drive fails we lose only the information that had been stored in that hard drive.
RAID 1 (Mirroring Data) is a way in which security is priority. A hard drive will be the main one and the rest of them will serve to keep an exact copy from the main one (therefore they must be of the same or higher capacity than the main one) If at any time the main hard drive fails, automatically, the system would use the next hard drive. A system useful for places where losing information and not been able to access the information is not an option.
And finally, RAID 0 (Striping Data), the one I want to use. With this RAID performance is optimized. For optimal results it is required that the hard drives were the same model. The units of the RAID are used in parallel to read and to write data so, theoretically, performance is multiplied as many times as units we have in the RAID. It does not give any improvement on security as RAID 1 does. If a hard drive fails, we will lose all the information as always happens in the domestic systems.
See more on Wikipedia
posted by Ikaru at
13:07
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