number of scsi disk for Solaris sd

hi i got answer for my question and i want to share

In format commadn  if you check the disk sd will be of format sd@ and ssd disk will be for format ssd@"

aslo to check /etc/system

"HBA is indepedent of driver ,........Emulex and qlogic both can use the SD driver"

sd driver support 256 path

while ssd support 4096 paths (scsi) disk

i have question

i have hosts that use ssd

i present 85 LUN from vmax to this host ( 8 port )

so this host have 680 paths / scsi disks

and this host take long time to reboot ,

to disocover storage (Cfgadm–c configure c3 )

so for performance  what the recommend number of disks/paths to present for solairs 10 sparc hosts

any help plz

I dont think there is any recommendations for disks/Paths.Its based on the IO Traffic.Normally an HBA should handle 2500~3000 IO/Sec and Vmax port should be capable of delivering the said load.

Did u install powerpath??If you install powerpath can you please issue the command powermt display every=1 and can check whether there is any IO queue on the adapters....

In Solaris there is files  /kernel/drv/sd.conf and /kernel/drv/ssd.conf....You can configure your addressing by editing those files.....