shutdown the server and plugged one of the unraid data drives (sata) to an external hdd adapter for ubuntu 16.4, which could read the contents of the disk just fine. so for my configuration and my usecase its working. heres hoping that the h700 will handle the disks the same way.
There will be extra information on the disks, like tags that define the virtual disk. This extra information will likely create an offset that will cause the data to appear corrupted when read from a pass-through controller. I would not plan on moving disks between the PERC using any RAID level, including 0, and a pass-through controller.
One option is to not go with a PERC H700, but with an H200 or H310. These latter 2 support HBA mode if you cross flash them to IT mode, and then you can connect the drive to any other matching controller (SAS drives only support connecting to a SAS HBA, but SATA drives work on a SAS HBA or SATA controller).
In reply to post by dell engineer claiming such disk will be unreadable: Sorry this is not true.
1. You can create a filesystem on a disk using another computer, import it to mini perc h710 based raid controller, create a virtual volume of a type raid0 using the whole disk, reboot the server and YOU CAN MOUNT the filesystem without any problems.
2. You can even create (on a server array controller) a virtual volume of a size smaller than the whole disk on a server array controller, than format it inside the server os, move files to it, unmount, poweroff the server, physically remove the disk from DELL server, connect it to desktop PC, mount it into the os on a pc and access all files without any problem.
This is great news: mini perc h710 seems to leave disks clean enought so that they can be read outside.
havisparco
2 Posts
0
September 18th, 2018 06:00
i just tried with my test system with success
config:
r710 with perc6i
all disks have their own raid0 virtual disk
os unraid
shutdown the server and plugged one of the unraid data drives (sata) to an external hdd adapter for ubuntu 16.4, which could read the contents of the disk just fine. so for my configuration and my usecase its working. heres hoping that the h700 will handle the disks the same way.
Daniel My
10 Elder
•
6.2K Posts
0
September 17th, 2018 14:00
Hello
There will be extra information on the disks, like tags that define the virtual disk. This extra information will likely create an offset that will cause the data to appear corrupted when read from a pass-through controller. I would not plan on moving disks between the PERC using any RAID level, including 0, and a pass-through controller.
Thanks
Dev Mgr
4 Operator
•
9.3K Posts
0
September 17th, 2018 20:00
One option is to not go with a PERC H700, but with an H200 or H310. These latter 2 support HBA mode if you cross flash them to IT mode, and then you can connect the drive to any other matching controller (SAS drives only support connecting to a SAS HBA, but SATA drives work on a SAS HBA or SATA controller).
Damago
1 Message
0
October 12th, 2020 13:00
In reply to post by dell engineer claiming such disk will be unreadable: Sorry this is not true.
1. You can create a filesystem on a disk using another computer, import it to mini perc h710 based raid controller, create a virtual volume of a type raid0 using the whole disk, reboot the server and YOU CAN MOUNT the filesystem without any problems.
2. You can even create (on a server array controller) a virtual volume of a size smaller than the whole disk on a server array controller, than format it inside the server os, move files to it, unmount, poweroff the server, physically remove the disk from DELL server, connect it to desktop PC, mount it into the os on a pc and access all files without any problem.
This is great news: mini perc h710 seems to leave disks clean enought so that they can be read outside.