Crucial M500 vs Samsung 840 EVO

"I have a recurring problem when I'm making music. If the track I'm working on is playing and I load up a plugin on a channel, the plugin will appear to be missing until I pause the track."

I do not know. It may have nothing to do with the SSD. Sure that all your apps are Yosemite compatible?

Check the lists in roaringapps.com.

I did not install the TRIM command. I simply cloned my HD to the M550 and then installed the SSD into my Macbook Pro.

I didn't install the Satsmart driver either.

I bought the SSD about a month and half ago. I haven't installed any firmware updates. Is this something that may help to resolve the issues I'm experiencing?

Here's the report from DriveDX:

### SYSTEM INFORMATION ###

Report Timestamp : 3 November 2014 13:21:18 GMT

Report Timestamp (ISO 8601 format) : 2014-11-03T13:21:18

Application Name : DriveDx

Application Version : 1.3.0.444

App SubBuild : 0

Application Edition : 1

DriveDx Knowledge Base Revision : 1/1

Computer Model : MacBookPro9,2

OS Boot Time : 2014-10-31T01:36:43

Time Since Boot : 3 days 11h 44m 35s

OS Name : Mac OS X

OS Version : 10.10.0

OS Build : 14A389

OS Kernel Version : Darwin 14.0.0

ATA Command Support Tolerance : verypermissive

N of drives with S.M.A.R.T support : 1

### DRIVE 1 OF 1 ###

Last Checked : 3 November 2014 13:20:42 GMT

Last Checked (ISO 8601 format) : 2014-11-03T13:20:42

Advanced SMART Status : OK

Overall Health Rating : GOOD 100%

Overall Performance Rating : GOOD 100%

SSD Lifetime Left Indicator : GOOD 100%

Issues found : 0

Serial Number : 14270C8574F4

WWN Id : 5 00a075 10c8574f4

Volumes : Untitled

Device Path : /dev/disk0

Total Capacity : 512.1 GB (512,110,190,592 Bytes)

Model Family : Crucial M550 SSD

Model : Crucial_CT512M550SSD1

Firmware Version : MU01

Drive Type : SSD

Power On Time : 143 hours (5 days 23 hours)

Power Cycles Count : 202

Current Power Cycle Time : 83.7 hours

=== DEVICE CAPABILITIES ===

S.M.A.R.T. support enabled : yes

DriveDx Active Diagnostic Config : Crucial (Micron) M5xx series config [ssd.micron.crucial.m5xx]

Sector Logical Size : 512

Sector Physical Size : 4096

Physical Interconnect : SATA

Removable : no

Ejectable : no

ATA Version : ACS-2, ATA8-ACS T13/1699-D revision 6

SATA Version : SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)

Attributes Data Structure Revision : 16

SMART Command Transport (SCT) flags : 0x35

SCT Status supported : yes

SCT Feature Control supported : yes

SCT Data Table supported : yes

Error logging capabilities : 0x1

Self-tests supported : yes

Offline Data Collection capabilities : 0x7b

Offline Data Collection status : 0x80

Auto Offline Data Collection flags : 0x1

Bay # : 1

I/O Path : IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice

[Known device ]: yes

[Drive State Flags ]: 0x0

=== CURRENT POWER CYCLE STATISTICS ===

Data Read : 25.3 GB

Data Written : 30.1 GB

Data Read/Write Ratio : 0.84

Average Throughput (Read) : 41.4 MB/s

Average Throughput (Write) : 59.2 MB/s

Operations (Read) : 707,088

Operations (Write) : 646,322

Operations Read/Write Ratio : 1

Throughput per operation (Read) : 37.5 KB/Op

Throughput per operation (Write) : 48.9 KB/Op

Latency Time (Read) : 0 ns

Latency Time (Write) : 0 ns

Retries (Read) : 0

Retries (Write) : 0

Errors (Read) : 0

Errors (Write) : 0

=== PROBLEMS SUMMARY ===

Failed Indicators (life-span / pre-fail) : 0 (0 / 0)

Failing Indicators (life-span / pre-fail) : 0 (0 / 0)

Warnings (life-span / pre-fail) : 0 (0 / 0)

Recently failed Self-tests (Short / Full) : 0 (0 / 0)

I/O Errors Count : 0 (0 / 0)

Time in Under temperature : 0 minutes

Time in Over temperature : 0 minutes

=== IMPORTANT HEALTH INDICATORS ===

ID NAME RAW VALUE STATUS

5 Reallocated Block Count 0 100% OK

171 Program Fail Count Total 0 100% OK

172 Erase Fail Count Total 0 100% OK

173 Average Block-Erase Count 1 100% OK

180 Unused Reserve (Spare) Blocks 4,403 100% OK

246 Total Host Sector Writes 1,644,300,724 (784.1 GB) 100% OK

=== TEMPERATURE INFORMATION (CELSIUS) ===

Current Temperature : 37

Power Cycle Min Temperature : 27

Power Cycle Max Temperature : 37

Lifetime Min Temperature : 20

Lifetime Max Temperature : 44

Recommended Min Temperature : 0

Recommended Max Temperature : 70

Temperature Min Limit : -5

Temperature Max Limit : 75

=== DRIVE HEALTH INDICATORS ===

ID | NAME | TYPE | UPDATE | RAW VALUE | VALUE | THRESHOLD | WORST | STATUS

1 Raw Read Error Rate Pre-fail online 0x0 100 50 100 100% OK

5 Reallocated Block Count Pre-fail online 0 100 10 100 100% OK

9 Power On Hours Life-span online 143 100 0 100 100% OK

12 Power Cycle Count Life-span online 202 100 0 100 100% OK

171 Program Fail Count Total Life-span online 0 100 0 100 100% OK

172 Erase Fail Count Total Life-span online 0 100 0 100 100% OK

173 Average Block-Erase Count Life-span online 1 100 10 100 100% OK

174 Unexpected Power Loss Count Life-span online 6 100 0 100 100% OK

180 Unused Reserve (Spare) Blocks Pre-fail online 4,403 0 0 0 100% OK

183 SATA Downshift Count Life-span online 1 100 0 100 100% OK

184 End-to-End Error Life-span online 0 100 50 100 100% OK

187 Reported Uncorrect Life-span online 0 100 0 100 100% OK

194 Temperature (Celsius) Life-span online 37 63 0 56 63.0% OK

196 Reallocated Event Count Life-span online 16 100 0 100 100% OK

197 Current Pending Sectors Count Life-span online 0 100 0 100 100% OK

198 Offline Uncorrectable Sector Count Life-span offline 0 100 0 100 100% OK

199 UDMA CRC Error Count Life-span online 0 100 0 100 100% OK

202 Percent Lifetime Remaining Pre-fail offline 0 100 0 100 100% OK

206 Write Error Rate Life-span online 0 100 0 100 100% OK

210 Successful RAIN Recovery Count Life-span online 0 100 0 100 100% OK

246 Total Host Sector Writes Life-span online 1,644,300,724 100 0 100 100% OK

247 Contact Factory Life-span online 0x311D163 100 0 100 100% OK

248 Contact Factory Life-span online 0x143939F 100 0 100 100% OK

=== DRIVE ERROR LOG ===

error log is empty

=== DRIVE SELF-TEST LOG ===

self-test log is empty

Thanks for you help LexSchellings!

Trim, should not be installed: OK. (maybe in future versions of Yosemite).

M550: the actual firmware is MU05 (released 25 Marh 2014), you have MU01. It might be necessary to update the firmware for Yosemite.

Download here: http://www.crucial.com/usa/en/support-ssd-firmware

SSD looks healthy, may be a bit warm (37°C, mine normally is at 35, with room temp at 21), but the DriveDx "opinion" on that is a bit "strong". Nothing to worry about I think.

Did you not forget to turn off "local snapshots" in TimeMachine?

Lex

you can set some more:

- In energy savings, "put the disk to sleep when possible" should be OFF (you can also in Terminal copy/paste sudo pmset -a disksleep 0).

- Sometimes the sata cable should be replaced too, or the connector is not clicked fully home.

- Also you can set hibernate mode to 0:

sudo pmset -a hibernatemode 0

sudo rm /private/var/vm/sleepimage

sudo touch /private/var/vm/sleepimage

sudo chmod 600 /private/var/vm/sleepimage

sudo chflags uchg /private/var/vm/sleepimage

- this disbles writing a 1.2GB file to the disk when going to sleep: this set of commands remove the existing sleepimage, replacing it by a locked file with 0 bits.

PS, do use BlackMagic DiskSpeedTest as little as possible, all that writing is not ideal for your SSD.

Lex