The ssd disk drops out of the soft raid, what could be the reason?

Question

linux

Hello
, there is a server with a soft raid 1
of two 120G ssd disks.
One of the disks sometimes drops out of the raid and becomes unavailable until the reboot, after a reboot it returns to the raid without errors. I can’t figure out why
there are such errors in messages

Sep 17 18:55:42 kernel: sd 3:0:0:0: [sdb] FAILED Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Sep 17 18:55:42 kernel: sd 3:0:0:0: [sdb] CDB: ATA command pass through(16) 85 06 2c 00 da 00 00 00 00 00 4f 00 c2 00 b0 00
Sep 17 18:55:42 smartd[678]: Device: /dev/sdb [SAT], SLEEP mode ignored due to reached limit of skipped checks (10 checks skipped)
Sep 17 18:55:42 smartd[678]: Device: /dev/sdb [SAT], not capable of SMART self-check
Sep 17 18:55:42 smartd[678]: Device: /dev/sdb [SAT], failed to read SMART Attribute Data

output of smartctl while it is running

Model: OCZ-ARC100

smartctl 6.4 2015-06-04 r4109 [x86_64-linux-4.8.5-alt490-amd64] (local build)
Copyright (C) 2002-15, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 18
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0000   000   000   000    Old_age   Offline      -       0
  9 Power_On_Hours          0x0000   100   100   000    Old_age   Offline      -       11019
 12 Power_Cycle_Count       0x0000   100   100   000    Old_age   Offline      -       65
171 Unknown_Attribute       0x0000   100   100   000    Old_age   Offline      -       40596560
174 Unknown_Attribute       0x0000   100   100   000    Old_age   Offline      -       35
195 Hardware_ECC_Recovered  0x0000   100   100   000    Old_age   Offline      -       0
196 Reallocated_Event_Count 0x0000   100   100   000    Old_age   Offline      -       0
197 Current_Pending_Sector  0x0000   100   100   000    Old_age   Offline      -       0
208 Unknown_SSD_Attribute   0x0000   100   100   000    Old_age   Offline      -       59
210 Unknown_Attribute       0x0000   100   100   000    Old_age   Offline      -       0
224 Unknown_SSD_Attribute   0x0000   100   100   000    Old_age   Offline      -       1
233 Media_Wearout_Indicator 0x0000   099   099   000    Old_age   Offline      -       99
241 Total_LBAs_Written      0x0000   100   100   000    Old_age   Offline      -       2462
242 Total_LBAs_Read         0x0000   100   100   000    Old_age   Offline      -       1356
249 Unknown_Attribute       0x0000   100   100   000    Old_age   Offline      -       127297695

smartctl when not working

# smartctl -a /dev/sdb
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.10.0-514.26.2.el7.x86_64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Vendor:               /3:0:0:0
Product:              
User Capacity:        600,332,565,813,390,450 bytes [600 PB]
Logical block size:   774843950 bytes
>> Terminate command early due to bad response to IEC mode page
A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options.

Please tell me what could be the reason

Answer 1

What does the SSD Tools utility say? https://www.ocz.com/us/download/ssd-utility