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Adding new hard disk to 7200 and tunesys

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alarkiko
Advisor

Adding new hard disk to 7200 and tunesys

Hi.

I have a 7200 with 52 900GB 10K hard disks, the average of disk occupation was 62%, all volumes are thin provisioning with total of 24TB (used capacity), the CPG Allocated Capacity is 25TB.

On last Wednesday I installed new 20 900GB 10K hard disks. After install HDs, I executed tunesys with default options and today it has completed the process but the allocate percentage is 89% and some of disk have 99%

The volumes/CPG and thinly provisioned volumes now graphs shows 50TB of space occupied. 

I don't understand this situation, I supposed when I add new hard disks the data split across all disk distributing all of information.

2 REPLIES
Dennis Handly
Acclaimed Contributor

Re: Adding new hard disk to 7200 and tunesys

>I executed tunesys with default options and today it has completed the process

 

Was there any output from tunesys?

 

>but the allocate percentage is 89% and some of disk have 99%

 

Of what command?  How about for your new disks, are they 0?

 

 

alarkiko
Advisor
Solution

Re: Adding new hard disk to 7200 and tunesys

Dennis

 

Thank you for your attention.

 

After reviewing all configuration and remembering the task I did, the problem is that all of the GPC change RAID 5 to RAID 1.

 

After installing the hard drives, I can change the speed to 10K rpm from automatic  in CPGs because I read this best pactice before running tunesys, and I don't know if I change or not the type of RAID RAID 1 (default) to RAID 5 (existing)

 

Now the tunesys is running again.

 

Thank you very much