I get AppleCare, so it’s at least 3 years, and if a mac hasn’t developed a fault in the first couple of years, it’s likely to last (with due care) for 5 years or more. By that time, I’ve usually sold it off anyway and bought a new machine.
It’s taken a while, but I finally got round to dragging out the old MacBook Air and running an SSD report. This is an Early/Mid MacBook Air that was my primary machine from 2011 to 2013 then a HTPC for a year before it became my sons machine until earlier this year.
What’s interesting is that this machine is showing 6,000 odd power cycles… vs 40,000 on the newer machine??
And the full report if anyone wants to read it all:
[quote]### SYSTEM INFORMATION ###
Report Timestamp : 10 December 2016 2:40:05 pm AEDT
Report Timestamp (ISO 8601 format) : 2016-12-10T14:40:05
Application Name : DriveDx
Application Version : 1.5.0.526
Application SubBuild : 0
Application Edition : Standalone
Application Website : DriveDx - the most advanced drive health diagnostics and monitoring utility
DriveDx Knowledge Base Revision : 5/5
Computer Name : Juliette’s MacBook Air
Host Name : Juliettes-MacBook-Air
Computer Model : MacBookAir4,2
OS Boot Time : 2016-12-10T14:10:11
Time Since Boot : 00h 29m 54s
OS Name : macOS
OS Version : 10.12.0
OS Build : 16A323
OS Kernel Version : Darwin 16.0.0
SAT SMART Driver Version : N/A
ATA Command Support Tolerance : verypermissive
N of drives with S.M.A.R.T support : 1
DRIVE 1 OF 1
Last Checked : 10 December 2016 2:38:41 pm AEDT
Last Checked (ISO 8601 format) : 2016-12-10T14:38:41
Advanced SMART Status : OK
Overall Health Rating : GOOD 76.7%
Overall Performance Rating : GOOD 100%
SSD Lifetime Left Indicator : GOOD 76.7%
Issues found : 0
Serial Number : A0AAAAAAA00000
WWN Id : 5 0000f0 000000000
Volumes : Macintosh SSD, BOOTCAMP
Device Path : /dev/disk0
Total Capacity : 251.0 GB (251,000,193,024 Bytes)
Model Family : Apple (Samsung-based) SSDs
Model : APPLE SSD SM256C
Firmware Version : AXM09A1Q
Drive Type : SSD
Power On Time : 12,594 hours (17 months 14 days 18 hours)
Power Cycles Count : 6,973
Current Power Cycle Time : 0.5 hours
=== DEVICE CAPABILITIES ===
S.M.A.R.T. support enabled : yes
DriveDx Active Diagnostic Config : Apple (Samsung-based) c-series SSDs config [ssd.apple.samsung.c]
Sector Logical Size : 512
Sector Physical Size : 512
Physical Interconnect : SATA
Removable : no
Ejectable : no
ATA Version : ATA8-ACS, ATA/ATAPI-7 T13/1532D revision 1
SATA Version : SATA 2.6, 3.0 Gb/s (current: 3.0 Gb/s)
Bay # : 1
I/O Path : IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice
Attributes Data Structure Revision : 1
SMART Command Transport (SCT) flags : 0x0
SCT Status supported : no
SCT Feature Control supported : no
SCT Data Table supported : no
Error logging capabilities : 0x1
Self-tests supported : yes
Offline Data Collection capabilities : 0x53
Offline Data Collection status : 0x0
Auto Offline Data Collection flags : 0x0
[Known device ]: yes
[Drive State Flags ]: 0x0
=== CURRENT POWER CYCLE STATISTICS ===
Data Read : 3.5 GB
Data Written : 1.1 GB
Data Read/Write Ratio : 3.19
Average Throughput (Read) : 19.7 MB/s
Average Throughput (Write) : 24.4 MB/s
Operations (Read) : 118,125
Operations (Write) : 31,004
Operations Read/Write Ratio : 4
Throughput per operation (Read) : 31.2 KB/Op
Throughput per operation (Write) : 37.2 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)
=== IMPORTANT HEALTH INDICATORS ===
ID NAME RAW VALUE STATUS
5 Retired Block Count 0 100% OK
173 Wear Leveling Count 0x900D90065 93.0% OK
177 Wear Leveling Count 9 98.8% OK
179 Used Reserved Block Count Total 1,650 77.8% OK
180 Unused Reserved Block Count Total 6,670 77.8% OK
182 Erase Fail Count 0 100% OK
=== DRIVE HEALTH INDICATORS ===
ID | NAME | TYPE | UPDATE | RAW VALUE | VALUE | THRESHOLD | WORST | STATUS | LAST MODIFIED
1 Raw Read Error Rate Pre-fail online 0x0 200 0 200 100% OK -
5 Retired Block Count Pre-fail online 0 100 0 100 100% OK -
9 Power On Hours Life-span online 12,594 97 0 97 97.0% OK -
12 Power Cycle Count Life-span online 6,973 93 0 93 93.0% OK -
169 Total Bad Block Count Pre-fail online 0x67220801900 253 10 253 100% OK -
173 Wear Leveling Count Life-span online 0x900D90065 193 100 193 93.0% OK -
175 Program Fail Count Chip Life-span online 0 100 10 100 100% OK -
176 Erase Fail Count Chip Life-span online 0 100 10 100 100% OK -
177 Wear Leveling Count Pre-fail online 9 99 17 99 98.8% OK -
178 Used Reserved Block Count Chip Pre-fail online 882 79 10 79 76.7% OK -
179 Used Reserved Block Count Total Pre-fail online 1,650 80 10 80 77.8% OK -
180 Unused Reserved Block Count Total Pre-fail online 6,670 80 10 80 77.8% OK -
181 Program Fail Count Life-span online 0 100 10 100 100% OK -
182 Erase Fail Count Life-span online 0 100 10 100 100% OK -
183 Total Runtime Bad Count Pre-fail online 0 100 10 100 100% OK -
187 Uncorrectable Error Count Life-span online 0 100 0 100 100% OK -
192 Unsafe Shutdown Count Life-span online 6,575 98 0 98 98.0% OK -
194 Temperature (Celsius) Life-span online 43 57 0 57 57.0% OK -
195 Hardware ECC Recovered Life-span online 0x0 253 0 253 100% OK -
197 Current Pending Sectors Count Pre-fail online 0 100 0 100 100% OK -
198 Offline Uncorrectable Sectors Count Life-span offline 0 100 0 100 100% OK -
199 UDMA CRC Error Count Life-span online 0 253 0 253 100% OK -
=== DRIVE ERROR LOG ===
error log is empty
=== DRIVE SELF-TEST LOG ===
| LIFETIME (H) | TEST TYPE | PROGRESS | STATUS | LBA of 1st error
1 12594 Short offline 100% Completed without error -
[/quote]