3 Replies Latest reply on Nov 4, 2014 9:52 AM by David_Intel

    How is the data storing for JBOD different from a Raid 0?

    trany

      I'm just curious how the data storing works for JBOD (2 drives) compare with a Raid 0 (2 drives). Will JBOD utilizes 1st the 1st drive till it's full before it moves to the 2nd drive?

        • 1. Re: How is the data storing for JBOD different from a Raid 0?
          David_Intel

          RAID 0 is a striped set without parity. This provides performance and additional storage without fault tolerance. The data is broken into fragments. The number of fragments is ruled by the number of disks in the array.  This allows smaller sections of the entire chunk of data to be read off the drive in parallel to increase bandwidth.

           

          JBOD stands for Just a Bunch of disks. This is the combination of multiple physical drives into a single virtual disk. It provides no data redundancy. We have the following presentation for JBOD drives.

          • 2. Re: How is the data storing for JBOD different from a Raid 0?
            trany

            Thank you for the information David.

            The presentation is very clear. However I have another question after viewing the presentation

             

            Disk 1: 300G

            Disk 2: 300G

            Disk 3: 300G

            Configuring JBOD: Total logical drive is 900G

             

            If my Data utilizes up to 500G, that means only Disk 1 and Disk 2 have data. In the event that Disk 3 will fail. Can we replace Disk 3 with another HDD or can we still use the JBOD with only Disk 1 and Disk 2?

            • 3. Re: How is the data storing for JBOD different from a Raid 0?
              David_Intel

              If the drive does not contain any data, I would expect to be able to access the information just fine. You may still get some errors from your Operating System when it tries to write data to the space that was supposed to belong to Drive 3.