Browse Community
Help
Log In
Unsolved
This post is more than 5 years old
mawatarai
3 Apprentice
•
1.3K Posts
0
1004
May 26th, 2017 03:00
How many failures does the Vault Drives have, and the system normally?
Responses(5)
AndreD Dell
Moderator
239 Posts
May 26th, 2017 04:00
This questions doesn't make sense
Could you elaborate?
Andre @ Dell EMC
May 26th, 2017 07:00
Hi
Unity DPE Disk 0 - 3 is Vault Disk.
I think that boot volume and the vault space are stored.
I also think that Vault Disk is mirrored.
For example DPE disk1&Disk2 is faulted when occured at the same timing.
Does Unity system down?
or
does Single SP down?
Thanks
Rainer_EMC
8.6K Posts
May 26th, 2017 08:00
Start with the Unity HA white paper
I dont think the internal usage and protection of the vault drives is documented in detail
Thank you very much.
I'd like to check the tec doc, which documents should I check?
Hi,
"Unity DPE Disk 0 - 3 is Vault Disk." - This is correct.
However, Unity SPs also have an internal disk each.
Vaulting happens to the Vault drives or the internal disk, depending on how the system goes down.
General speaking SPA boots from disks 0 and 2, SPB from 1 and 3 (mirrored).
Although unlikely, If disks 1 and 2 fail, the system should not go down as each SP still has one disk to run from.
If, for example, disks 0 and 2 go down, then SPA might eventually go down, but the system will stay up on SPB.
I am speaking in a very generic way here. More details should be available in the tech docs.
Dell Support Resources
View More
View All
Top
AndreD Dell
Moderator
Moderator
•
239 Posts
0
May 26th, 2017 04:00
This questions doesn't make sense
Could you elaborate?
Andre @ Dell EMC
mawatarai
3 Apprentice
3 Apprentice
•
1.3K Posts
0
May 26th, 2017 07:00
Hi
Unity DPE Disk 0 - 3 is Vault Disk.
I think that boot volume and the vault space are stored.
I also think that Vault Disk is mirrored.
For example DPE disk1&Disk2 is faulted when occured at the same timing.
Does Unity system down?
or
does Single SP down?
Thanks
Rainer_EMC
8.6K Posts
0
May 26th, 2017 08:00
Start with the Unity HA white paper
I dont think the internal usage and protection of the vault drives is documented in detail
mawatarai
3 Apprentice
3 Apprentice
•
1.3K Posts
0
May 26th, 2017 08:00
Hi
Thank you very much.
I'd like to check the tec doc, which documents should I check?
Thanks
AndreD Dell
Moderator
Moderator
•
239 Posts
0
May 26th, 2017 08:00
Hi,
"Unity DPE Disk 0 - 3 is Vault Disk." - This is correct.
However, Unity SPs also have an internal disk each.
Vaulting happens to the Vault drives or the internal disk, depending on how the system goes down.
General speaking SPA boots from disks 0 and 2, SPB from 1 and 3 (mirrored).
Although unlikely, If disks 1 and 2 fail, the system should not go down as each SP still has one disk to run from.
If, for example, disks 0 and 2 go down, then SPA might eventually go down, but the system will stay up on SPB.
I am speaking in a very generic way here. More details should be available in the tech docs.
Andre @ Dell EMC