Understanding SMART Test Reports: Hard Drive Attribute 45 Failure
Solid State Drives (SSDs) and Hard Disk Drives (HDDs) have become an essential component of modern computing. To ensure their longevity and reliability, they come equipped with a technology called Self-Monitoring, Analysis and Reporting Technology (SMART). SMART monitors various attributes of a drive and reports any potential issues that may arise. One such attribute is Attribute 45, which, when it fails, can indicate a problem with the hard drive.
What is SMART?
SMART is a monitoring system built into hard drives and SSDs that tracks various attributes related to the drive's health and performance. These attributes include temperature, power-on hours, and error rates. By monitoring these attributes, SMART can predict potential failures and alert users before they occur. This gives users the opportunity to back up their data and replace the drive before it fails completely.
What is Attribute 45?
Attribute 45, also known as "Load Cycle Count," measures the number of times the drive has been powered on and off. Each time the drive is powered on, it goes through a series of load cycles as it spins up to full speed. Over time, these load cycles can cause wear and tear on the drive, leading to potential failures. When Attribute 45 fails, it can indicate that the drive has been powered on and off too many times, and may be at risk of failing.
Interpreting SMART Test Reports
When a SMART test is run on a drive, it will generate a report that includes various attributes and their current values. If an attribute, such as Attribute 45, fails, it will be highlighted in the report. This indicates that the attribute has exceeded its threshold, and may be a cause for concern.
However, it's important to note that a failing attribute doesn't necessarily mean that the drive is about to fail. It's simply an indication that the attribute has exceeded its threshold, and that the drive may be at risk of failing in the future. If you see a failing attribute in a SMART test report, it's a good idea to back up your data and keep an eye on the drive's performance. If you notice any unusual behavior, such as slow performance or frequent errors, it may be time to replace the drive.
Example of a SMART Test Report
Here is an example of a SMART test report for a hard drive with a failing Attribute 45:
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE\_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN\_FAILED RAW\_VALUE
5 Reallocated\_Sector\_Ct 0x0033 099 099 010 Pre-fail Always - 29
9 Power\_On\_Hours 0x0032 099 099 000 Old\_age Always - 15667
12 Power\_Cycle\_Count 0x0032 099 099 000 Old\_age Always - 1377
192 Power-Off\_Retract\_Count 0x0032 99 99 000 Old\_age Always - 261
193 Load\_Cycle\_Count 0x0032 95 95 000 Old\_age Always - 651513
194 Temperature\_Celsius 0x0022 117 107 000 Old\_age Always - 35
196 Reallocated\_Event\_Count 0x0033 099 099 010 Pre-fail Always - 29
197 Current\_Pending\_Sector 0x0032 099 099 000 Old\_age Always - 0
198 Offline\_Uncorrectable 0x0030 100 100 050 Pre-fail Offline - 0
199 UDMA\_CRC\_Error\_Count 0x0032 200 200 000 Old\_age Always - 0
220 Disk\_Shift 0x0002 100 100 000 Old\_age Always - 0
222 Loaded\_Hours 0x0032 099 099 000 Old\_age Always - 15667
223 Load\_Retry\_Count 0x0032 100 100 000 Old\_age Always - 0
224 Load\_Friction 0x0022 100 100 000 Old\_age Always - 0
226 Load-in\_Time 0x0026 100 100 000 Old\_age Always - 488In this report, you can see that Attribute 193, Load\_Cycle\_Count, has a value of 651513, which is above its threshold of 0. This indicates that the drive has been powered on and off too many times, and may be at risk of failing.
SMART test reports are an important tool for monitoring the health and performance of hard drives and SSDs. By understanding what each attribute means, and how to interpret the values in a SMART test report, you can take steps to ensure the longevity and reliability of your drives. If you see a failing attribute in a SMART test report, such as Attribute 45, it's a good idea to back up your data and keep an eye on the drive's performance. If you notice any unusual behavior, such as slow performance or frequent errors, it may be time to replace the drive.
References
- Backblaze. (2021). Hard Drive Stats for Q1 2021. https://www.backblaze.com/blog/hard-drive-stats-q1-2021/
- Crucial. (2021). What is SMART? https://www.crucial.com/articles/about-memory/what-is-smart
- Newegg. (2021). Understanding SMART Attributes. https://www.newegg.com/insider/understanding-smart-attributes/
- Wikipedia. (2021). Self-Monitoring, Analysis and Reporting Technology. https://en.wikipedia.org/wiki/Self-Monitoring,_Analysis_and_Reporting_Technology