Er liten ytre partisjon på stor disk like rask som raptor?

[Gurgalmei]

Jeg leste følgende på forumet i Storagereview og lurte på om dette betyr at hvis jeg tar en 1 TB samsung og lager en ytre partisjon på 100 GB og en indre partisjon på 900 GB, så vil aksesstiden på den ytre partisjonen bli neste like god som på en raptor? Ser da for meg å bruke den andre partisjonen til feks. backup av data på slutten av dagen

 

"

The 10K RPM SATA drive designed for the enthusiast performance desktop market has an average access time of 7.7 milliseconds. But since the 300 GB 7200 RPM drive is 4 times bigger than the 73 GB 10K drive, we can actually use quarter stroking and end up with a high-performance 75 GB partition along with a 225 GB partition we can use for large file archival such as a DVD collection.

 

By quarter stroking the 300 GB drive, we can actually shave 6.68 ms off the seek time which means we’ll actually end up with an average access time of 6.4 milliseconds which is significantly faster than the 10K RPM "performance" drive.

 

Average access latency/time and IOPS are little like different sides of same thing. Latency tells how much time disk needs for accessing some point of HDD so naturally it can't do more IOs in second than second divided by latency.

(of course if accesses are done inside small area without much need to move heads then IOPS rises)

 

If you take WD75000AAKS and make partition size of 74GB Raptor that means you would partial/short stroke movement of heads (and associated seek latency) to under one tenth of that for full disk size partition leaving pretty much just rotational latency. "

Endret 9. januar 2008 av Gurgalmei

[Tonka]

Jeg fant dette (se særlig siste post i linken), men har ikke prøvd det selv.

http://forums.whirlpool.net.au/forum-repli...cfm/872893.html