PVG Strict or Stripe Lvol

[Guga]

I would like to know which it is the best to use either PVG Distributed Strict or Stripe on Lvol and why ???

[Duncan Edmonstone]

That's like asking 'I'd like to know what sort of transmission in a car is better automatic or manual?'

Both have their pros and cons...unless you actually tell us what you are looking to do, then either could be 'best'.

HTH

Duncan

[Guga]

I want to stripe datas on all my disks only.

What must I use???

[Tim Nelson · Accepted solution]

With HPs LVM you only have 3 choices.

RAID0 ( striped no protection )
RAID1 ( not striped, simple mirror )
Distributed Extent based stripe and mirror

If you wish to stripe and mirror then your only option it extent based. As noted by its name the stripe size is not 2k,4k,8k.. but the size of the lv extents 2m,4m,8m..

[Sandman!]

What kind of storage array (if any) are you using? Reason is that all the newer arrays present LUNs that are already striped in the backend so using volume manager based striping adds overhead. And most of these smart arrays have hardware redundancy built into them in order to recover from a disk failure. So based on your answer there maybe no need to stripe and/or PVG distribute your data.