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Forum Discussion
RAID-5 (Flex ?) expansion on ReadyNas 104
Hi,
Haven't yet - but considering buying ReadyNAS 104 - 4bay.
Looking to possibly fill it with 4x 4Tb disks in RAID-5
I think I'll go for generic RAID-5 (Flexi ?) rather than XRAID
My question is :
If using RAID-5, can I initially buy 3 disks (@4Tb) now, setup + use, and then easily add an additional disk (also 4Tb) to the RAID-5 array later on ?
(i.e. without backing up and initialising from start)
Thanks.
Haven't yet - but considering buying ReadyNAS 104 - 4bay.
Looking to possibly fill it with 4x 4Tb disks in RAID-5
I think I'll go for generic RAID-5 (Flexi ?) rather than XRAID
My question is :
If using RAID-5, can I initially buy 3 disks (@4Tb) now, setup + use, and then easily add an additional disk (also 4Tb) to the RAID-5 array later on ?
(i.e. without backing up and initialising from start)
Thanks.
4 Replies
Replies have been turned off for this discussion
- If you want raid5 or raid6, just use xraid2. That runs raid-5 underneath, and enables both horizontal and vertical expansion later on.
flexraid is ideal if you want jbod, RAID-10 or want multiple volumes (2 RAID-1 mirrors for example). But there is no benefit if all you want is a single volume with raid5 or raid6. - My consideration with FlexRaid was trying to avoid something that was Proprietary for NetGear, in case the time came if I wanted to change systems.
E.g. heard of people having lots of issues with the Dobro systems and wanting to move away but not being able to easily. - Seen elsewhere that expansion is possible on Flex-RAID is using 4.2.16, but a confirmation would be reassuring.
Edit. Ah:
http://kb.netgear.com/app/answers/detail/a_id/19043/~/expanding-the-readynas-volume-when-in-flex-raid-mode. - xraid2 is actually not proprietary. Underneath it is mdraid, with some scripts around it for expansion.
Though if you want to migrate to another manufacturer's platform you'd need to copy the data in any event. The OS is saved on the disks, and it basically wouldn't boot on another hardware platform. Of course the btrfs file system is also somewhat unusual.
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