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Raid 0 stripe size


 
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Operating Systems Linux Raid 0 stripe size
# 8  
Old 08-25-2009
Also, please tell me that your "backups" are also going to another spot other than just a RAID 5 set.

Yes, 32-64K would be good for non sequential (sequential would be something like linear video or audio files). 128K would possibly be ideal if your files are greater than 8MB on average.

However, as others have stated, RAID 0, while improving performance, will actually increase the likelihood of failure from even having 1 drive.
# 9  
Old 08-25-2009
Quote:
Originally Posted by mark54g
Also, please tell me that your "backups" are also going to another spot other than just a RAID 5 set.

Yes, 32-64K would be good for non sequential (sequential would be something like linear video or audio files). 128K would possibly be ideal if your files are greater than 8MB on average.

However, as others have stated, RAID 0, while improving performance, will actually increase the likelihood of failure from even having 1 drive.
yup my "backups" are going into a external 1.5TB... I dont think the OS files are larger than 8MB.. So i guess 32k would be ideal?? i can go as low as 4k
# 10  
Old 08-25-2009
Quote:
So i guess 32k would be ideal?
Rather than ideal, I would say sufficient for what you are trying to do. Don't stress too much over that detail. You're striping across 3 drives. Ought to be fast.
# 11  
Old 08-25-2009
Quote:
Originally Posted by Radar
Rather than ideal, I would say sufficient for what you are trying to do. Don't stress too much over that detail. You're striping across 3 drives. Ought to be fast.
32K it is then Smilie thanks Smilie

---------- Post updated at 11:03 AM ---------- Previous update was at 11:03 AM ----------

and for my raid 5 im using 128 Smilie
# 12  
Old 08-25-2009
You may also want to set, depending on your RAM, a read ahead of say 4MB or more as well as a stride in the file system that matches your work pattern.
# 13  
Old 08-25-2009
Quote:
Originally Posted by mark54g
You may also want to set, depending on your RAM, a read ahead of say 4MB or more as well as a stride in the file system that matches your work pattern.
i have 8gb of ram... Not sure what u mean
# 14  
Old 08-25-2009
Are you running 64-bit debian? Why?

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