Read Errors Hard 0x00000006 (Since Factory) and (Since Reset) 0 Errors

[SLaven44]

Hi all,

I have on server DL360 G6 in ADU report this situation:

Smart Array P410i in Embedded Slot : Internal Drive Cage at Port 1I : Box 1 : Drive Cage on Port 1I : Physical Drive (300 GB SAS) 1I:1:4 : Monitor and Performance Statistics (Since Factory)

Read Errors Hard                     0x00000006

And below that it stands:

Smart Array P410i in Embedded Slot : Internal Drive Cage at Port 1I : Box 1 : Drive Cage on Port 1I : Physical Drive (300 GB SAS) 1I:1:4 : Monitor and Performance Statistics (Since Reset)

   Read Errors Hard                     0x00000000

Can anyone explain to me what "(Since Factory) and (Since Reset)" means? 

There is scheduled software upgrade of this server, so can we proceed with upgrade, or do we need to replace disk?

Thanks in advance,

Best regards,