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SoftRaid 3x2TB SATA?
Nativebaby
Member
in Help
I recently took a new dedicated server ovh whose description is: SoftRaid 3x2TB SATA but I'm not sure I understand the meaning. I suppose there are 3 physical 2TB disks so I would tend to assume it is RAID 5 but if it was, we would end up with a 4TB disk and not 2TB.
Can someone explain to me what type of RAID is SoftRaid 3x2TB SATA?
Thank you in advance.
Comments
you can make softraid with either raid 10 or raid 5. that's decided by you.
@jpeng So SoftRaid 3x2TB mean is RAID5 ?
And what should i do to get like 4TB or 3TB should i contact support?
Can you please explain the 3x2TB?
It means, you are able to convert these devices into raid drives, by utilizing mdadm (software raid).
Depending on what your goal is, you have 3 options
3x Read and Write speed gain.
3x read speed gain. Write speed would be same as single disk. Would survive 1 disk failure.
2x read speed gain. Total usable storage: 4TB.
you have THREE 2TB disk
you setup whatever you want.
That is not a good answer as it is technically impossible to do RAID10 using 3 disks, minimum amount of disks is 4 disks to be able to utilize RAID10.
It Is possibile to do something like RAID 10 with odd drives with linux. It Is called RAID 1E.
https://en.m.wikipedia.org/wiki/Non-standard_RAID_levels
RAID-1E is a non-standard RAID-level and it makes no sense running it with 3 drives, as it would essentially give no real benefits over running plain RAID-1 with 2 drives.
You would end up losing a drive for no good reason and you would not gain any additional level of redundancy by doing so.
Not exactly. A RAID 1E with 3 drives is obviously faster than 2 drives RAID 1, both in read and write operations, and you can still lose one drive. Compared to RAID 5 is much more reliable, doesn't have its checksum overhead and provides faster array rebuilds.
I always use it with odd drives, works wonderfully.
Edited: wrong calculation about available disk space.
Most probably not, the service you have bought should be unmanaged.