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Slow Samsung M750XBB

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saltwater

Post subject: Slow Samsung M750XBB

Posted: May 31st, 2017, 4:45

Joined: November 3rd, 2013, 13:04
Posts: 321
Location: Hungary

Hello friends!
This not the first problem with slow Samsung M8 drives.
While i imaging the drive i have many messages in terminal, and the LBA reading speed is 2-300 kb/sec.
I changed HSA, and nothing changed, the drive still very slow, but can read all sectors without problem.
It looks like the drive scanning offline for bad sectors in the background.
Is there a way for deny this "feature" in Samsung drives like in WD, and Seagate drives?
These are the terminal messages:

Code:

C0

E_F
FSA2
C0
FSA_S

E_F
FSA1
C1
[pc:1,old:0,new:0,offset:40]
 159:90700000:008610080_002D FFFFFFFFFF000000 0000000000FFFFFF 0000000000000000

E_F
FSA2
C1
FSA_S

E_F
FSA1
C0

E_F
FSA2
C0
FSA_S

E_F
FSA1
C1
[pc:1,old:0,new:0,offset:48]
 159:90700000:008610080_002D FFFFFFFFFFFF0000 000000000000FFFF 0000000000000000

E_F
FSA2
C1
FSA_S

E_F
FSA1
C0

E_F
FSA2
C0
FSA_S

E_F
FSA1
C1
[pc:1,old:0,new:0,offset:56]
 159:90700000:008610080_002D FFFFFFFFFFFFFF00 00000000000000FF 0000000000000000

E_F
FSA2
C1
FSA_S

E_F
FSA1
C0

E_F
FSA2
C0
FSA_S

E_F
FSA1
C1
[pc:1,old:0,new:0,offset:0]
 155:906E0000:0086100C0_002D 0000000000000000 FFFFFFFFFFFFFFFF 0000000000000000

E_F
FSA2
C1
FSA_S

E_F
FSA1
C0

E_F
FSA2
C0
FSA_S

E_F
FSA1
C1
[pc:1,old:0,new:0,offset:0]
 156:906E8000:008610100_002D 0000000000000000 FFFFFFFFFFFFFFFF 0000000000000000

E_F
FSA2
C1
FSA_S

E_F
FSA1
C0

E_F
FSA2
C0
FSA_S

E_F
FSA1
C1
[pc:1,old:0,new:0,offset:0]
 175:90780000:008610240_002D 0000000000000000 FFFFFFFFFFFFFFFF 0000000000000000

E_F
FSA2
C1
FSA_S

E_F
FSA1
C0

E_F
FSA2
C0
FSA_S

E_F
FSA1
C1
[pc:1,old:0,new:0,offset:56]
 179:907A0000:0086102C0_002D FFFFFFFFFFFFFF00 00000000000000FF 0000000000000000

E_F
FSA2
C1
FSA_F1
FSA1
C1
[pc:1,old:0,new:0,offset:56]
 179:907A0000:0086102C0_002D FFFFFFFFFFFFFF00 00000000000000FF 0000000000000000

E_F
FSA2
C1
FSA_S

E_F
FSA1
C0

E_F
FSA2
C0
FSA_S

E_F
FSA1
C1
[pc:1,old:0,new:0,offset:0]
 180:907A8000:008610300_002D 0000000000000000 FFFFFFFFFFFFFFFF 0000000000000000

E_F
FSA2
C1
FSA_F1
FSA1
C1
[pc:1,old:0,new:0,offset:0]
 180:907A8000:008610300_002D 0000000000000000 FFFFFFFFFFFFFFFF 0000000000000000

E_F
FSA2
C1
FSA_S

E_F
FSA1
C0

E_F
FSA2
C0
FSA_S

E_F
FSA1
C1
[pc:1,old:0,new:0,offset:16]
 180:907A8000:008610300_002D FFFF000000000000 0000FFFFFFFFFFFF 0000000000000000

E_F
FSA2
C1
FSA_F1
FSA1
C1
[pc:1,old:0,new:0,offset:16]
 180:907A8000:008610300_002D FFFF000000000000 0000FFFFFFFFFFFF 0000000000000000

E_F
FSA2
C1
FSA_S

and so on.....

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pcn

Post subject: Re: Slow Samsung M750XBB

Posted: May 31st, 2017, 5:22

Joined: July 12th, 2014, 6:24
Posts: 91
Location: Berlin, Germany

Hi,

I had some success when I reduced read retry count in utility on some slow reading cases. Have you tried that?

Look also here: http://forum.acelaboratory.com/viewtopi ... 160&t=8833

good luck!

_________________
030 Datenrettung Berlin GmbH (Germany)
HDD, SSD, NAS, RAID Datenrettung - 030-datenrettung.de

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saltwater

Post subject: Re: Slow Samsung M750XBB

Posted: May 31st, 2017, 5:44

Joined: November 3rd, 2013, 13:04
Posts: 321
Location: Hungary

Thank you pcn!
Unfortunatelly i dont have PC3k, i have MRT and SeDiv, and i canot find "Read retry count level" feature.
Maybe change HSA again could solve this problem, because i think this problem caused some weak head(s).

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saltwater

Post subject: Re: Slow Samsung M750XBB

Posted: May 31st, 2017, 6:04

Joined: November 3rd, 2013, 13:04
Posts: 321
Location: Hungary

Diasbling auto relocation command would be great :-)

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saltwater

Post subject: Re: Slow Samsung M750XBB

Posted: May 3rd, 2019, 8:36

Joined: November 3rd, 2013, 13:04
Posts: 321
Location: Hungary

Spildit wrote:

saltwater wrote:

Diasbling auto relocation command would be great :-)

I don't know if this works or not because i did never test this one out but SHT and the latest version of it (SHTR) have the mentioned option for Trinity drives :

Attachment:

1.jpg

"Disable auto reasign in RAM" command does not do anything in SHTR.

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