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raid 5 possible issue

 
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fushigi
Advisor

raid 5 possible issue

DL380G3 with Array5i controller,

Here is my story: Currently im using Raid5 with 4 x 146GB physical disks, recently replaced the faulty disk and is rebuilding slowly(Is rebuild priority can be configured/set to medium or high?).
My concern is that, what if another disk will going to fail while the recently replaced disk rebuilding is in progress, is there a possiblity that i will lost the data?


Any thoughts would be much appreciated.
4 REPLIES
KarloChacon
Honored Contributor
Solution

Re: raid 5 possible issue

hi fushigi

yes rebuild priority can be changed

- open array configuration utility
- select your controller
- select controller setting options (right side)
- change it to high
* you can change it at any time

you other question: Yes, since your RAID 5 right now is in not fault tolerance mode so if another HDD fails your RAID 5 will be completely affected since RAID 5 only supports 1 HDD failed instead of RAID 6 that supports 2 HDDs failed

that's why always it's a good practice to have backup

regards

Didn't your momma teach you to say thanks!
fushigi
Advisor

Re: raid 5 possible issue

Hi Karlo,

Thanks for the response.
Just to confirm, did you mean that I can change the rebuild priority even the disk rebuilding is in progress? Sorry for asking redundant question, just need to confirm since the box is in critical production.

Regards,
-fushigi

KarloChacon
Honored Contributor

Re: raid 5 possible issue

hi

yes you can change it at any time it won't affect the system if you change it from low to high

regards
Didn't your momma teach you to say thanks!
pymsh
Frequent Advisor

Re: raid 5 possible issue

Hi,
You can change the rebuild priority of your smart array at any time.
But, if you want to have availability on data when a disk is rebuilding without any risk so you can use RAID-6.
This RAID supports 2 disk failure at the same time.