disco SSD che dà problemi

Buongiorno,
ho acquistato a ottobre un disco SSD (OWC Mercury Accelsior PCIe SSD) per il mio Mac Pro (Mid 2010). Fino a maggio tutto OK. Poi si è rotto (non è più partito). Essendo ancora in garanzia me l'hanno sostituito con uno identico ma il nuovo ancora mi dà problemi. IN verità di per sè funziona ma dall'utility disco mi continua a dire che deve essere riparato. Lo riparo e due giorno dopo il problema permane. Cosa consigliate di fare? Chiedere una nuova sostituzione con un altro SSD (come consigliato dall'azienda da cui ho acquistato)? Oppure chiudere gli occhi e tenerlo finchè va.... (ma per quanto?).
Incollo qui l'esito di EntreCheck. Forse può essere utile per capire se c'è qualcosa che gli dà fastidio.....
Grazie!!!!!
eccolo,
nel sito c’è un lungo sto che spiega voce per voce

EtreCheck version: 2.9.12 (265)
Report generated 2016-06-20 07:53:15
Download EtreCheck from https://etrecheck.com
Runtime 2:03
Performance: Excellent

Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.

Problem: Other problem

Hardware Information: ⓘ
Mac Pro (Mid 2010)
[Technical Specifications] - [User Guide] - [Warranty & Service]
Mac Pro - model: MacPro5,1
2 2,4 GHz Quad-Core Intel Xeon CPU: 8-core
32 GB RAM Upgradeable - [Instructions]
DIMM 1
4 GB DDR3 ECC 1066 MHz ok
DIMM 2
4 GB DDR3 ECC 1066 MHz ok
DIMM 3
4 GB DDR3 ECC 1066 MHz ok
DIMM 4
4 GB DDR3 ECC 1066 MHz ok
DIMM 5
4 GB DDR3 ECC 1066 MHz ok
DIMM 6
4 GB DDR3 ECC 1066 MHz ok
DIMM 7
4 GB DDR3 ECC 1066 MHz ok
DIMM 8
4 GB DDR3 ECC 1066 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en2: 802.11 a/b/g/n

Video Information: ⓘ
ATI Radeon HD 5770 - VRAM: 1024 MB
LaCie 324 1920 x 1200 @ 59 Hz
Cintiq21UX 1600 x 1200 @ 60 Hz

System Software: ⓘ
OS X El Capitan 10.11.5 (15F34) - Time since boot: about 15 hours

Disk Information: ⓘ
OWC Mercury Accelsior PCIe SSD disk0 : (479,95 GB) (Rotational)
EFI (disk0s1) <not mounted> : 210 MB
Flash Drive (disk0s2) / : 479.09 GB (431.70 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

HL-DT-ST DVD-RW GH41N ()

WDC WD1001FALS-41Y6A0 disk1 : (1 TB) (Rotational)
EFI (disk1s1) <not mounted> : 210 MB
Macintosh HD (disk1s2) /Volumes/Macintosh HD : 999.35 GB (299.93 GB free)
Recovery HD (disk1s3) <not mounted> [Recovery]: 650 MB

MARVELL VIRTUALL ()

USB Information: ⓘ
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Tablet DTZ-2100
Logitech USB Receiver
3Dconnexion SpaceNavigator for Notebooks

Gatekeeper: ⓘ
Mac App Store and identified developers

Kernel Extensions: ⓘ
/Library/Extensions
[loaded] com.3dconnexion.driver (10.3.1 - SDK 10.9 - 2016-06-10) [Support]
[not loaded] com.FTDI.driver.D2XXHelper (1.0 - SDK 10.11 - 2016-06-10) [Support]

/Library/Extensions/3Dconnexion.kext/Contents/PlugIns
[not loaded] com.3dconnexion.virtual.driver (10.3.1 - 2016-03-16) [Support]

/System/Library/Extensions
[not loaded] com.wacom.kext.wacomtablet (Wacom Tablet 6.3.15-3 - SDK 10.11 - 2016-06-10) [Support]

/Volumes/Macintosh HD/Applications/MacX Video Converter Pro.app
[not loaded] com.macxdvd.driver.goodSysAudioCapture (1.0 - SDK 10.10 - 2015-05-07) [Support]

System Launch Agents: ⓘ
[not loaded] 8 Apple tasks
[loaded] 158 Apple tasks
[running] 72 Apple tasks

System Launch Daemons: ⓘ
[not loaded] 46 Apple tasks
[loaded] 160 Apple tasks
[running] 84 Apple tasks

Launch Agents: ⓘ
[not loaded] com.adobe.AAM.Updater-1.0.plist (2016-06-12) [Support]
[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a...plist (2016-06-09) [Support]
[running] com.adobe.AdobeCreativeCloud.plist (2016-06-09) [Support]
[running] com.wacom.wacomtablet.plist (2015-12-16) [Support]

Launch Daemons: ⓘ
[loaded] com.3dconnexion.nlserverIPalias.plist (2016-03-16) [Support]
[loaded] com.adobe.ARMDC.Communicator.plist (2016-06-09) [Support]
[loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (2016-06-09) [Support]
[running] com.adobe.adobeupdatedaemon.plist (2016-06-10) [Support]
[loaded] com.adobe.agsservice.plist (2016-06-09) [Support]
[loaded] com.macpaw.CleanMyMac3.Agent.plist (2016-06-10) [Support]
[loaded] com.microsoft.autoupdate.helpertool.plist (2016-06-10) [Support]
[loaded] com.microsoft.office.licensingV2.helper.plist (2016-05-06) [Support]
[loaded] com.wacom.displayhelper.plist (2015-12-16) [Support]

User Launch Agents: ⓘ
[loaded] com.adobe.AAM.Updater-1.0.plist (2016-06-09) [Support]
[loaded] com.google.keystone.agent.plist (2016-06-09) [Support]
[loaded] com.macpaw.CleanMyMac3.Scheduler.plist (2016-06-11) [Support]

User Login Items: ⓘ
Google Chrome Applicazione Hidden (/Volumes/Macintosh HD/Applications/Google Chrome.app)
Dropbox Applicazione (/Applications/Dropbox.app)
3DconnexionHelper Applicazione (/Library/PreferencePanes/3Dconnexion.prefPane/Contents/Resources/3DconnexionHelper.app)
CleanMyMac 3 Menu Applicazione (/Applications/CleanMyMac 3.app/Contents/MacOS/CleanMyMac 3 Menu.app)
AdobeResourceSynchronizer Applicazione Hidden (/Applications/Adobe Acrobat DC/Adobe Acrobat.app/Contents/Helpers/AdobeResourceSynchronizer.app)

Other Apps: ⓘ
[running] com.3dconnexion.3dxnlserver.672
[running] com.3dconnexion.RadialMenu.992
[running] com.3dconnexion.VirtualLCD.188192
[running] com.3dconnexion.VirtualNumPad.187552
[running] com.3dconnexion.driver.helper.187232
[running] com.adobe.CCLibrary.45792
[running] com.adobe.CCXProcess.184672
[running] com.adobe.acc.AdobeDesktopService.122912.4AED58A1-E1A8-4527-ACB5-161ACF48F8E3
[running] com.adobe.accmac.190112
[running] com.etresoft.EtreCheck.48992
[running] com.getdropbox.dropbox.183712
[running] com.google.Chrome.314272
[running] com.macpaw.CleanMyDrive.191072
[loaded] com.macpaw.CleanMyDrive.Helper
[running] com.macpaw.CleanMyMac3.Menu.45152
[loaded] com.soponext.whatsappmacHelper
[running] com.wacom.TabletDriver.39392
[running] com.wacom.WacomTouchDriver.182432
[loaded] 414 Apple tasks
[running] 200 Apple tasks

Internet Plug-ins: ⓘ
AdobePDFViewerNPAPI: 15.016.20045 - SDK 10.11 (2016-06-12) [Support]
AdobePDFViewer: 15.016.20045 - SDK 10.11 (2016-06-12) [Support]
QuickTime Plugin: 7.7.3 (2016-06-09)
WacomTabletPlugin: WacomTabletPlugin 2.1.0.6 - SDK 10.9 (2015-12-16) [Support]
AdobeAAMDetect: 3.0.0.0 - SDK 10.9 (2016-06-10) [Support]
Default Browser: 601 - SDK 10.11 (2016-06-10)

3rd Party Preference Panes: ⓘ
3Dconnexion (2016-06-10) [Support]
WacomTablet (2016-06-10) [Support]

Time Machine: ⓘ
Skip System Files: NO
Auto backup: YES
Volumes being backed up:
Flash Drive: Disk size: 479.09 GB Disk used: 47.38 GB
Destinations:
Macintosh HD [Local]
Total size: 999.35 GB
Total number of backups: 19
Oldest backup: 17/06/16, 09:57
Last backup: 20/06/16, 07:22
Size of backup disk: Adequate
Backup size 999.35 GB > (Disk used 47.38 GB X 3)

Top Processes by CPU: ⓘ
6% Google Chrome Helper(6)
3% WindowServer
2% fontd
1% kernel_task
0% Google Chrome

Top Processes by Memory: ⓘ
1.53 GB kernel_task
1.15 GB Google Chrome Helper(6)
688 MB mdworker(15)
262 MB Google Chrome
229 MB Dropbox

Virtual Memory Information: ⓘ
21.00 GB Free RAM
11.00 GB Used RAM (3.28 GB Cached)
0 B Swap Used

Diagnostics Information: ⓘ
Jun 19, 2016, 04:03:12 PM Self test - passed
Jun 19, 2016, 07:21:34 AM /Library/Logs/DiagnosticReports/SketchUp_2016-06-19-072134_[redacted].cpu_resource.diag [Details]
/Applications/SketchUp 2016/SketchUp.app/Contents/MacOS/SketchUp
Jun 18, 2016, 10:03:05 AM /Library/Logs/DiagnosticReports/SketchUp_2016-06-18-100305_[redacted].cpu_resource.diag [Details]
Jun 17, 2016, 02:27:10 PM /Library/Logs/DiagnosticReports/Adobe Bridge CC_2016-06-17-142710_[redacted].cpu_resource.diag [Details]
/Applications/Adobe Bridge CC/Adobe Bridge CC.app/Contents/MacOS/Adobe Bridge CC
Jun 17, 2016, 09:45:55 AM /Library/Logs/DiagnosticReports/backupd_2016-06-17-094555_[redacted].cpu_resource.diag [Details]
/System/Library/CoreServices/backupd.bundle/Contents/Resources/backupd
Jun 17, 2016, 09:19:46 AM /Library/Logs/DiagnosticReports/SketchUp_2016-06-17-091946_[redacted].cpu_resource.diag [Details]