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Post by manishg4 on Sept 19, 2018 4:28:55 GMT
Hello,
Looking at the various LineOfService options, and the related elements like Storage Pool, Storage Group, I could not figure out a way using which I could set the RAID level of the underlying volume manager running on the Chassis.
There are various RAID levels amongst which I would like to select a particular level while creating a Storage Group.
Which Swordfish construct can be used to specify the RAID Level mapping?
Thanks,
Manish
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Post by gericson on Sept 19, 2018 13:50:49 GMT
Volume.VolumeType is being added in 1.0.7. We are providing this because we understand that many clients are familiar with selecting various raid levels.
With new storage architectures, the performance and robustness based on past experience with a RAID level may not be the best choice with newer implementations.
The ClassOfService/LineOfService datastructures are used to specify a desired level of service, regardless of implementation. For these reasons, RAID levels were intentionally omitted.
With this in mind, we encourage feedback on addition of attributes that can be used to specify levels of service in terms that an end user will understand and can measure.
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Post by manishg4 on Sept 20, 2018 9:47:27 GMT
Thanks for the revert.
IMHO, since StoragePool shall be a global pool over which the "Volumes" shall be created, the facility to specify RAID settings should be applicable while creating a new Storage Pool. All Volumes then which are part of that StoragePool shall inherit the RAID settings for the StoragePool.
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Post by gericson on Sept 20, 2018 12:42:16 GMT
Your suggestion is consistent with some implementations. In others a pool is factory that is able to create multiple types of volumes, file systems, or object stores. There are several possible ways to represent this. It would be good to have your participation in the Swordfish SSM TWG.
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