expanding a raid group with existing disks

it is safe just watch the workload, if it starts impacting performance you can change down the priority.

do not mix FC and SATA in the same RG, if you add 2TB SATA drive to RG that consists of 600G FC drives ..you will only get 600G worth of capacity from the new drive.

is it safe to expand existing RGs with luns on them? worried about something might happen

I have a private lun on a rg. Is it ok to delete that?

16 drives per RG is max. Think about double drive failure, especially with big SATA drives. The more drives in the RAID group, the longer rebuild times, the more chances of double drive failure and data loss (i assume you are using RAID-5).

tdubb wrote: I have a private lun on a rg. Is it ok to delete that?

you can't, it could be part of a meta LUN, RLP ..etc

yes, data will be restriped onto the new disks

If I had a RG on bus2, enclosure 6 - disk 0-4

that has 5 luns on there

and I want to expand this RG with

bus 0, enclosure 6, disk 7-10

what will happen to the existing luns cuent on the RG? will the data start striping acoss all available buses and disks?

the existing RG is 4tb. what is the max RG size allowed? Also this is a sata 2 RG. Is it better to create a separate RG. sata2 is slow

yes its raid5. current rg has 5 disks (4 , 1TB and 1, 2TB). what is your recommendation

thanks

definitely not mix SATA and FC drives in the same RG. What do you need extra storage for ? Is it for VM ?

yes its for all VMs. I currently got too many luns on this Sata RG. and users complaining its slow

maybe create a new raid group that consists of FC drives, create new datastore and storage vMotion some VMs over.

how can i check the status of how long the expansion of a rg is going to take?