RAID (redundant array of independent disks; originally redundant array of inexpensive disks) is a way of storing the same data in different places (thus, redundantly) on multiple hard disks. By placing data on multiple disks, I/O (input/output) operations can overlap in a balanced way, improving performance. Since multiple disks increases the mean time between failures (MBTF), storing data redundantly also increases fault tolerance.
How can this be a lifesaver for someone like me? Since both drives act as one...They are both getting the same data written on both drives. Well after 3 server drive failures and a current upgrade that I am working on now, it makes the times that you have to do disaster recovery few and far between. In a RAID 1 array, which I use lots, if one drive fails, the server (or computer) keeps running withought skipping a beat just with one drive functioning, this gives you time to replace the failed drive with a new one and keep moving along. No need to replace the operating system etc. When you have to upgrade, it is usually as easy as imaging the old drive(s) on to the new one and off you go. (This is what I am doing now and I am in the hurry up and wait stage - waiting for Data to copy over.) Just thought I would share another day in the life of Graham with a boring Techie Post!
Have a great one!
How can this be a lifesaver for someone like me? Since both drives act as one...They are both getting the same data written on both drives. Well after 3 server drive failures and a current upgrade that I am working on now, it makes the times that you have to do disaster recovery few and far between. In a RAID 1 array, which I use lots, if one drive fails, the server (or computer) keeps running withought skipping a beat just with one drive functioning, this gives you time to replace the failed drive with a new one and keep moving along. No need to replace the operating system etc. When you have to upgrade, it is usually as easy as imaging the old drive(s) on to the new one and off you go. (This is what I am doing now and I am in the hurry up and wait stage - waiting for Data to copy over.) Just thought I would share another day in the life of Graham with a boring Techie Post!
Have a great one!
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