ML350p Gen8 RAID 10 strange activity

[kaiserclaw]

Hello,
We have a disk cage with 6x SSD in a RAID 10 and a second cage for storage 4xHDD in RAID 5.
2x P420 -controllers 

The activity is a little strange on RAID 10. Only 3 of 6 disk has activity, is this normal? Seems like 3 of them are just idle at all time. I thought RAID 10 was (1+0) raided 2 disks (x3) and striped them all together?
https://commons.wikimedia.org/wiki/File:RAID_10_6Drives.svg

RAID 5 array there's activity on all disks.  

[Suman_1978]

Hi,

Please reconfirm the raid setup, as far as I know, if the disk is idle, it could be a spare drive/offline/not configured.
Refer to "SAS/SATA hard drive LED combinations".

Thank You!
https://support.hpe.com/hpesc/public/home