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HDD/SSD Discussion Thread - (WAS: is the cache size that important now?)
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Barakkus
#21 - 2011-10-20 15:49:21 UTC
I usually just disable the write cache on my drives since it doesn't impact performance that much anyways, unless you are doing a LOT of writes. If the cache is write-back and your controller has no battery backup on it, then you're ****** if you have a hard OS lock up or power failure, less likely to have an issue from power failure as opposed to a hard OS lock up. If the cache is write-through then you're safer. Most consumer level drives have write-back caches and controllers don't usually have bbu, so you should be careful leaving the cache enabled.

http://youtu.be/yytbDZrw1jc
Remarka Belle Locus
University of Caille
Gallente Federation
#22 - 2011-10-20 18:04:17 UTC
Sir Substance wrote:
Remarka Belle Locus wrote:
Sir Substance wrote:
I've never paid attention to HDD cache sizes, ever.

A PC is only as fast as it slowest component. Your HDD cache size is going to have a miniscule effect on your overall system speed. I'd only be looking at that if I've already fussed over ram timings and airflow dynamics in my case, both of which will have more impact on system performance.


Typically, the slowest component is the hard drive. The biggest bottleneck in most people's computers is the data transfer rate from the hard drives. Maybe you should start paying attention to that component?

This is about relative performance gains, not absolute performance. You are right, the transfer speeds of modern magnetic hard drives are not very impressive, and probably the biggest bottleneck. That doesn't change between a 16mb or 32mb cache. They are both still **** slow.

You advocate swapping a 16mb cache drive for a 32mb cache drive as a system performance upgrade? You are bad and should feel bad.



Where did I say anything resembling that? I said get an SSD. You are bad at reading comprehension and should feel bad.
Alain Kinsella
#23 - 2011-12-26 04:57:45 UTC
Bump for interesting development - I've gotten word that SSDs may not DoD wipe completely.

Admittedly this was coming from a data management & destruction company (no surprise there), so grains of salt are involved for now. Will link the source when I can get it from work tomorrow.

"The Meta Game does not stop at the game. Ever."

Currently Retired / Semi-Casual (pending changes to RL concerns).
Aineko Macx
#24 - 2011-12-26 06:47:21 UTC
People are calling cache what is actually a buffer.

iveeCore 3.0: The PHP engine for industrial activities and CREST library
Shalia Ripper
#25 - 2011-12-26 22:23:39 UTC
Myfanwy Heimdal wrote:
I've just been given a 15,000 rpm disk from a grateful client.

Not sure in which machine to put it because, ideally, it would have to be a system disk and I don't fancy installing XP all over again...



Acronis TruImage. Mirror that drive and no reinstall of XP needed.

Sig blah blah blah blah
FloppieTheBanjoClown
Arcana Imperii Ltd.
#26 - 2011-12-27 22:04:16 UTC  |  Edited by: FloppieTheBanjoClown
Alain Kinsella wrote:
Bump for interesting development - I've gotten word that SSDs may not DoD wipe completely.

Admittedly this was coming from a data management & destruction company (no surprise there), so grains of salt are involved for now. Will link the source when I can get it from work tomorrow.

It's going to depend on the how the software performs the wipe. Older software designed for mechanical drives won't work for SSDs because their tech is fundamentally different. The write commands that will wipe a platter WON'T wipe the SSD chip because they treat blocks and sectors differently. Remember the big to-do over the TRIM function? SSDs that don't have it (afaik all new ones do) would gradually become slower over time due to the difference in how they read and write data.

It's been a long time since I had to deal with any kind of wipes so I couldn't even tell you with any certainty that there are SSD-specific applications. I'll assume there are, as it would be silly for them to not have been written at this point.

Founding member of the Belligerent Undesirables movement.
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