How big is Host Writes on your SSD?

[One_Hertz]

Why would they reference a trace from a non 4K aware OS (XP) using a HDD with only 1GB of RAM?

Nice info though. I see they say 29% of all write commands are sequential.

Everyone's going to have a different workload. At least this one is documented. Just a shame it was on an antiquated set up.

The setup doesn't matter in determining these numbers... the data written would be the same on HDD or SSD. The low RAM could increase certain writes however.

[Ao1]

The setup doesn't matter in determining these numbers... the data written would be the same on HDD or SSD. The low RAM could increase certain writes however.

Agreed but it suggests the PC being monitored was more or less being used as a type writer. It would have been much better if they used a trace from a modern PC/ OS with a wider range of applications. Using an SSD for the trace would also have been more helpful.

At the end of the day however it is still going to be mostly small xfers, but maybe some larger xfers would have shown up.

[alfaunits]

The setup doesn't matter in determining these numbers... the data written would be the same on HDD or SSD. The low RAM could increase certain writes however.

No it would not, and considerably. NTFS journaling and MFT access on a larger HDD drive is different than on an SSD.

[One_Hertz]

NTFS journaling and MFT access on a larger HDD drive is different than on an SSD.

No? Expand?

[alfaunits]

No? Expand?

The MFT reserved area is smaller on an SSD than on an HDD of a similar size, thus more of an SSD is used, whereas on an HDD certain are of the drive (10% even) might never be touched unless the drive gets filled >90%.
The log does not record last access time on an SSD by default, whereas it does on an HDD (W7 only).

The area where data is written to on an SSD is different than that on an HDD because the starting format is not the same. There is quite a bit of difference. It's not 50% or probably not even 20% difference in terms of amount, but with random I/O it can be >10%.

[One_Hertz]

The MFT reserved area is smaller on an SSD than on an HDD of a similar size, thus more of an SSD is used, whereas on an HDD certain are of the drive (10% even) might never be touched unless the drive gets filled >90%.
The log does not record last access time on an SSD by default, whereas it does on an HDD (W7 only).

The area where data is written to on an SSD is different than that on an HDD because the starting format is not the same. There is quite a bit of difference. It's not 50% or probably not even 20% difference in terms of amount, but with random I/O it can be >10%.

I still don't know what you mean, but yes I forgot the W7 SSD optimizations.