Apple - Is there a utility for mac that shows the information of an SSD like the health etc…?
If you're OK with Command Line utilities, you can always use smartmontools from http://www.smartmontools.org/.
You would need XCode to compile them from source (unless someone here knows binary distribution for Mac OSX), but if I remember correctly I had no issues compiling the package.
I have an OCZ SSD retrofitted into my MBP 15" mid-2010 and I can use smartctl command to monitor various stats, including your Total Bytes Written (called here Lifetime_Writes) as well as Media Wearout Indicator (shown as percentage).
To give you an idea, here's the example output:
MacBook:~ smartctl -a /dev/disk0
smartctl 6.0 2012-10-10 r3643 [x86_64-apple-darwin12.2.0] (local build)
Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Indilinx Everest/Martini based SSDs
Device Model: OCZ-VERTEX4
Serial Number: OCZ-xxxxxxxxxxxxxxxxx
LU WWN Device Id: 5 e83a97 49c31f44c
Firmware Version: 1.5
User Capacity: 512,110,190,592 bytes [512 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Sat Apr 20 23:39:33 2013 IST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 249) Self-test routine in progress...
90% of test remaining.
Total time to complete Offline
data collection: ( 0) seconds.
Offline data collection
capabilities: (0x1d) SMART execute Offline immediate.
No Auto Offline data collection support.
Abort Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
No Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x00) Error logging NOT supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 0) minutes.
Extended self-test routine
recommended polling time: ( 0) minutes.
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
1 Raw_Read_Error_Rate 0x0000 006 000 000 Old_age Offline - 6
3 Spin_Up_Time 0x0000 100 100 000 Old_age Offline - 0
4 Start_Stop_Count 0x0000 100 100 000 Old_age Offline - 0
5 Reallocated_Sector_Ct 0x0000 100 100 000 Old_age Offline - 0
9 Power_On_Hours 0x0000 100 100 000 Old_age Offline - 2981
12 Power_Cycle_Count 0x0000 100 100 000 Old_age Offline - 417
232 Lifetime_Writes 0x0000 100 100 000 Old_age Offline - 14566414269
233 Media_Wearout_Indicator 0x0000 100 000 000 Old_age Offline - 100
SMART Error Log not supported
Warning! SMART Self-Test Log Structure error: invalid SMART checksum.
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
Selective Self-tests/Logging not supported
The exact parameters and stats shown for your SSD might vary, but as it's a free tool, you can try and see for yourself!
Check out SSD Health on the Mac App Store: http://ssdhealth.com/macos.html
Check out DriveDx: http://binaryfruit.com/drivedx . It have free 10-Day Trial version and shows Lifetime Left indicator for SSDs, overall health rating, performance rating, important health indicators and many other useful and important information about SSD.