NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
6 drives, 2x3tb 4x2tb, 3tb show as 2tb WTF
Hey All. Okay, just set this thing up, updated the firmware, etc. Disks are: 3tb 3tb 2tb 2tb 2tb 2tb It is set up as Raid Level X-Raid2 6 disks. But for some reason the volumes of ...
Negative I believe that is not correct mdmg - in the over all process you would be correct, but in expansion that is incorrect. To get RAID 6 you need at least 4 drives, but to get mdadm to let you get another md after your md2 with RAID 6 you only need 3 disks.
You see Im talking about the extra MD that was created with the oversized disks (md3). You can create a RAID 6 out of 3 block devices....Here is my proof... how many disks are needed for RAID5? 3 right... well then why does our NAS expand the md3 after 2 disks. Look at logs for a setup of 2,2,2,3,3 with RAID 5 you will see that the md3 is expanded with only 2 block devices (the last two 1 TB big portions [2tb to 3tb] of the 3 TB drives are used). Here is a visual of it on readynas.com : http://www.readynas.com/?cat=53 Note that after the 2nd disk upgrade the Volume gets upgraded... Meaning that md3 expanded and is adding its space to the LV /dev/c/c.
However in this case I dont know if the 3 tb drives were put in first or last. If they were put in first he needs to back up all his data to remote place and then factory default the nas with the 3,3,2,2,2 setup and then upgrade one of the disks to 3tb.
If however the 3TB drives were put in last then the user just needs to add another disk to experience volume growth.
The best resolution for the issue is for the user to include the logs - please provide us a link to your zipped up logs (System-Status-Logs-Download All Logs). The user can put them in Dropbox public folder or any internet file sharing service and just provide us the link.
You see Im talking about the extra MD that was created with the oversized disks (md3). You can create a RAID 6 out of 3 block devices....Here is my proof... how many disks are needed for RAID5? 3 right... well then why does our NAS expand the md3 after 2 disks. Look at logs for a setup of 2,2,2,3,3 with RAID 5 you will see that the md3 is expanded with only 2 block devices (the last two 1 TB big portions [2tb to 3tb] of the 3 TB drives are used). Here is a visual of it on readynas.com : http://www.readynas.com/?cat=53 Note that after the 2nd disk upgrade the Volume gets upgraded... Meaning that md3 expanded and is adding its space to the LV /dev/c/c.
However in this case I dont know if the 3 tb drives were put in first or last. If they were put in first he needs to back up all his data to remote place and then factory default the nas with the 3,3,2,2,2 setup and then upgrade one of the disks to 3tb.
If however the 3TB drives were put in last then the user just needs to add another disk to experience volume growth.
The best resolution for the issue is for the user to include the logs - please provide us a link to your zipped up logs (System-Status-Logs-Download All Logs). The user can put them in Dropbox public folder or any internet file sharing service and just provide us the link.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
