Hi there.
1.
I am using the Professional version of HD Sentinel
and I wanted to check a recently bought external usb disk.
Using the surface tests, I am taking repeatedly the analysis of a single one darker green sector,
which I assume means this specific one sector is harder to read.
How can this be acceptable for a brand new hd?
Is it fair to assume this sector can possibly prove to be a problematic one in the future, or not?
2.
How tolerable is it that two brand new different disks of the exact same manufacturer, model, date and series (WD Blue 2.5" 1TB - WD10JPVX-22JC3T0)
can show off dissimilar behavior in terms of temperature and read-write performance?
Thanks in advance.
Congratulations for your sw.
Brand new disk with harder to read sector
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Re: Brand new disk with harder to read sector
> Using the surface tests, I am taking repeatedly the analysis of a single one darker green sector,
> which I assume means this specific one sector is harder to read.
Yes, this is true: darker green block indicates that one or more sectors are slightly slower than expected.
What happens if you perform a complete overwrite? Maybe Disk menu -> Surface test -> Reinitialise disk surface test
(at least on the appropriate block)?
It may improve performance in later tests.
> How can this be acceptable for a brand new hd?
> Is it fair to assume this sector can possibly prove to be a problematic one in the future, or not?
Some minor performance degradations are completely acceptable.
No, I can confirm if you see one such block, it does not really indicate that it will surely fail.
Usually problems may occur if lots of sectors are slower and those blocks form continuous area on the hard disk, usually with one ore more damaged (yellow) or unreadable (red) blocks, as on this surface map:
1-2 slower blocks are acceptable - and it is possible that after overwrite the performance increases.
> How tolerable is it that two brand new different disks of the exact same manufacturer, model, date and series
> (WD Blue 2.5" 1TB - WD10JPVX-22JC3T0) can show off dissimilar behavior in terms of temperature and read-write performance?
Yes, it is possible.
Even if we assume that the two hard disk has 100% similar internal structure (even if they are from same model family and their serial numbers indicate that they should be identical), it is possible that the manufacturer changed something.
Not really for this model, but in general it is even possible that one of the drives have more hard disk heads than the other - and this immediately cause different performance, different operational temperature (and even different self-monitoring data reported).
And of course the operating environment can affect both the temperature and the performance, for example their location (and other components in the case) can cause higher temperature for one of the drives.
Also using different hard disk controllers and their drivers can cause difference in the performance. For example if one of the drive is connected to Intel chipset controller and the other connected to JMicron controller (both on the same motherboard, just the ports marked with different colors) there may be difference in performance.
The same is true if both drives used in external USB enclosures - just with different USB chipsets.
> which I assume means this specific one sector is harder to read.
Yes, this is true: darker green block indicates that one or more sectors are slightly slower than expected.
What happens if you perform a complete overwrite? Maybe Disk menu -> Surface test -> Reinitialise disk surface test
(at least on the appropriate block)?
It may improve performance in later tests.
> How can this be acceptable for a brand new hd?
> Is it fair to assume this sector can possibly prove to be a problematic one in the future, or not?
Some minor performance degradations are completely acceptable.
No, I can confirm if you see one such block, it does not really indicate that it will surely fail.
Usually problems may occur if lots of sectors are slower and those blocks form continuous area on the hard disk, usually with one ore more damaged (yellow) or unreadable (red) blocks, as on this surface map:
1-2 slower blocks are acceptable - and it is possible that after overwrite the performance increases.
> How tolerable is it that two brand new different disks of the exact same manufacturer, model, date and series
> (WD Blue 2.5" 1TB - WD10JPVX-22JC3T0) can show off dissimilar behavior in terms of temperature and read-write performance?
Yes, it is possible.
Even if we assume that the two hard disk has 100% similar internal structure (even if they are from same model family and their serial numbers indicate that they should be identical), it is possible that the manufacturer changed something.
Not really for this model, but in general it is even possible that one of the drives have more hard disk heads than the other - and this immediately cause different performance, different operational temperature (and even different self-monitoring data reported).
And of course the operating environment can affect both the temperature and the performance, for example their location (and other components in the case) can cause higher temperature for one of the drives.
Also using different hard disk controllers and their drivers can cause difference in the performance. For example if one of the drive is connected to Intel chipset controller and the other connected to JMicron controller (both on the same motherboard, just the ports marked with different colors) there may be difference in performance.
The same is true if both drives used in external USB enclosures - just with different USB chipsets.