Very Computer

After firmware upgrade, our SE3510 started media scan and will run it
forever, according to the release notes:

"Media Scan
The media scan feature sequentially checks each physical drive in a
selected logical drive, block by block, for bad blocks. If a bad block
is encountered, the controller rebuilds the data from the bad block onto
a good block if one is available on the physical drive. If no good
blocks are available on the physical drive, the controller designates
the physical drive Bad, generates an event message, and if a spare
drive is available, will begin rebuilding data from the bad physical
drive onto the spare. By default, media scans are run continuously on
all active drives and local spares in all logical drives.
The media scan feature generates informational event messages for each
drive that is part of a logical drive. The informational event messages
are also generated each time a controller is reset or a logical drive is
created. During the media scan, the green front-panel LEDs blink for
every active drive."

Does anyone know about any implications of this functionality in the
disks lifetime? Would it be better to stop media scan to extend disks
lifetime?

Thanks,

Joao

Quote:>Does anyone know about any implications of this functionality in the
>disks lifetime? Would it be better to stop media scan to extend disks
>lifetime?

Regards
Fredrik

--
Fredrik Lundholm  

Thank you.

Joao

Quote:

>>Does anyone know about any implications of this functionality in the
>>disks lifetime? Would it be better to stop media scan to extend disks
>>lifetime?

> If you value your data, leave it on.
> Dont behave like an ostrich and bury your head to avoid
> potential problems. :)

> Regards
> Fredrik

what about controller/SES/firmware updates after you're
running 4.13C, which is what starts this?  they're
automatic, & suddenly you have disk activity, which of
course the firmware upgrade patches warn you about...

i actually have updated the firmware in one of mine (i
have 3) from 4.13C to 4.15F.  But the constant disk
activity sorta freaked me out.  No I/O but the media scan.
I ended up power-cycling the 3510/JBOD and let them spin
up, then did the update.  It seems they don't immediately
start into the media scan... but what about drive
firmware?  i've yet to do any since updating to 4.1x on
any of them.  The thought of that scares me.  Maybe i'll
open a ticket with Sun on this...