Partition or not?

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  • Last Post 30 July 2018
Ivan Hudak posted this 29 July 2018

I have a PROMISE Pegasus 3 R6 with factory set RAID 5. I would like to migrate the Time Machine on to it. Before I do that I am wondering If creating separate partition/s would be way to go? I have a few question regarding this.

• Is it a good idea? Is it recomended? I have to mention that I already have data on logic drive.

• Are there any perforamnce penalties for partitioing the RAID (minimun 2 partitions, maximum 4)?

• How to go about this. Should I use disk utility to partition logic drive? There does not seems to be any option in Promise Utility for this.

• Can the partition scheme be edited over time (delete, resize, etc.)?

• If partitionig logic drive with RAID leve 5 is OK I am curious how is partitioned data written in the RAID?

I am running OS X (High Sierra)

Any help with this would be appriciated.

Thanks, Ivan.

 

Pradeep Chidambaranath posted this 30 July 2018

Hi Ivan,

Kindly check the inline answers below.

• Is it a good idea? Is it recomended? I have to mention that I already have data on logic drive.

Pegasus unit is a raw storage and the file system is managed by MAC. You can create multiple logical drive through Promise Utility to have different drives mounted to your desktop. However, to create multiple logical drive you have to backup the existing data, once the data is backed up, you can delete and recreate the logical drive.

• Are there any perforamnce penalties for partitioing the RAID (minimun 2 partitions, maximum 4)?

There are no performance penalties for creating multiple logial drives.

• How to go about this. Should I use disk utility to partition logic drive? There does not seems to be any option in Promise Utility for this.

The option for partitioning is not available through Promise utility. You have to partition through the disk utility (this is on the OS side).

• Can the partition scheme be edited over time (delete, resize, etc.)?

Promise doesn't have much information about Partitioning options when it is done through the disk utility as it will be on the OS side.

• If partitionig logic drive with RAID leve 5 is OK I am curious how is partitioned data written in the RAID?

Kindly contact MAC to get more information on partitioning the exisiting logial drive.

We would recommend you to take a backup of all your data to be on a safer side before partitioning the existing logial drive.

Regards
Pradeep C

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