Background Media Scan on Seagate Constellation ES.3

Hi all, new to the list so pardon me if my question has already been
answered. I have tried searching, believe me! Also sorry if my mail gets
badly formatted, this new version of thunderbird is a bit opaque to me,
it used to be easy to select plain text formatting, but now I can not
find that setting anymore.

I have a couple of Seagate SAS drives, fairly expensive, so I'd like to
treat them as nicely as possible. At present they are CONSTANTLY running
"background scans", and generating a bit of heat and noise. The drives
are in for a rough summer if I can not make the background scans take a
vacation. I've pasted a smartctl -x output example at the end here. The
drives are of type Seagate Constellation ES.3, so from what I gather it
SHOULD be possible to turn off BMS on the drives. Smartmontools report
progress and logs from the scans, but I can' figure out how to turn it off.


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# smartctl -x /dev/disk/by-path/pci-0000:03:00.0-scsi-0:2:2:0 -d \
megaraid,19

smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.18.11-gentoo] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Vendor:               SEAGATE
Product:              ST4000NM0023
Revision:             0004
Compliance:           SPC-4
User Capacity:        4,000,787,030,016 bytes [4.00 TB]
Logical block size:   512 bytes
LB provisioning type: unreported, LBPME=0, LBPRZ=0
Rotation Rate:        7200 rpm
Form Factor:          3.5 inches
Logical Unit id:      0x5000c50059312e67
Serial number:        Z1Z599SN0000W503KBY0
Device type:          disk
Transport protocol:   SAS (SPL-3)
Local Time is:        Sun Apr 26 17:35:40 2015 CEST
SMART support is:     Available - device has SMART capability.
SMART support is:     Enabled
Temperature Warning:  Enabled
Read Cache is:        Enabled
Writeback Cache is:   Enabled

=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK

Current Drive Temperature:     52 C
Drive Trip Temperature:        60 C

Manufactured in week 32 of year 2014
Specified cycle count over device lifetime:  10000
Accumulated start-stop cycles:  102
Specified load-unload count over device lifetime:  300000
Accumulated load-unload cycles:  108
Elements in grown defect list: 0

Vendor (Seagate) cache information
  Blocks sent to initiator = 765249492
  Blocks received from initiator = 1187206260
  Blocks read from cache and sent to initiator = 7018969
  Number of read and write commands whose size <= segment size = 284252
  Number of read and write commands whose size > segment size = 422

Vendor (Seagate/Hitachi) factory information
  number of hours powered up = 316.02
  number of minutes until next internal SMART test = 25

Error counter log:
           Errors Corrected by           Total   Correction
Gigabytes    Total
               ECC          rereads/    errors   algorithm
processed    uncorrected
           fast | delayed   rewrites  corrected  invocations   [10^9
bytes]  errors
read:   832111902        0         0  832111902          0
359.672           0
write:         0        0         0         0          0        631.689
          0
verify: 82152663        0         0  82152663          0         32.135
          0

Non-medium error count:        1

No self-tests have been logged

Background scan results log
  Status: scan is active
    Accumulated power on time, hours:minutes 316:01 [18961 minutes]
    Number of background scans performed: 1,  scan progress: 66.08%
    Number of background medium scans performed: 1

Protocol Specific port log page for SAS SSP
relative target port id = 1
  generation code = 4
  number of phys = 1
  phy identifier = 0
    attached device type: SAS or SATA device
    attached reason: unknown
    reason: unknown
    negotiated logical link rate: phy enabled; 6 Gbps
    attached initiator port: ssp=1 stp=1 smp=1
    attached target port: ssp=0 stp=0 smp=0
    SAS address = 0x5000c50059312e65
    attached SAS address = 0x500605b007adf624
    attached phy identifier = 7
    Invalid DWORD count = 0
    Running disparity error count = 0
    Loss of DWORD synchronization = 23
    Phy reset problem = 0
    Phy event descriptors:
     Invalid word count: 0
     Running disparity error count: 0
     Loss of dword synchronization count: 23
     Phy reset problem count: 0
relative target port id = 2
  generation code = 4
  number of phys = 1
  phy identifier = 1
    attached device type: no device attached
    attached reason: unknown
    reason: unknown
    negotiated logical link rate: phy enabled; unknown
    attached initiator port: ssp=0 stp=0 smp=0
    attached target port: ssp=0 stp=0 smp=0
    SAS address = 0x5000c50059312e66
    attached SAS address = 0x0
    attached phy identifier = 0
    Invalid DWORD count = 0
    Running disparity error count = 0
    Loss of DWORD synchronization = 0
    Phy reset problem = 0
    Phy event descriptors:
     Invalid word count: 0
     Running disparity error count: 0
     Loss of dword synchronization count: 0
     Phy reset problem count: 0


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