>>>>> "Goswin" == Goswin von Brederlow <goswin-v-b@xxxxxx> writes: >> The IDEMA LBA standard applies to 3.5" form factor drives over 160GB >> as well as 2.5" FF drives over 80 GB. Goswin> Is that realy exactly so many LBA sectors or at least as many? Exactly that number. IDEMA provides a precise formula for converting marketing gigabytes to 512-byte (and 4KB) blocks. Goswin> I don't really see anything wrong with a 500G drive having a few Goswin> more sectors. I do. The whole purpose of the spec is to ensure that you can swap drives in a RAID setup without having to find an exact replacement. If your array has drives with "extra" blocks then it becomes impossible to swap in a drive that adheres to the IDEMA spec. Goswin> And I know my Maxtor 200G disk is 3G bigger than Seagates. 200GB is old enough that the spec doesn't apply. I know that technically it says 160GB and above. But in reality it took a while for vendors to start adhering. And the 200GB capacity point predates 160GB. The usual rule of thumb is that 320GB vintage drives and above get it right. And any new drive, regardless of capacity. -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
