so i got a couple of 4Kn drives, a few 512e drives and a good deal of 512n… not that it is relevant
for the last few months i’ve been trying to take advantage of using 4Kn formating on drives.
to my understanding because the 512sector keep crc values for each 512bytes or whatever while then 4kn keeps it for every 4096, that gives a sizable optimization in capacity of 4Kn drives.
supposedly it’s suppose to be that instead of the approximate 10% loss of capacity on 512n HDD’s then the 4Kn format losses only 3% to overhead… or so it’s claimed…
I’ve been trying to take advantage of this to no avail… and i was wondering if anyone else had any success with this… meaning getting a sizable reduction in the overhead on 4Kn or 512e HDD’s when formatting them to 4Kn
*-disk:5 description: SCSI Disk product: HUS726060AL4210 vendor: HGST physical id: 0.2.0 bus info: scsi@7:0.2.0 logical name: /dev/sdj version: A7J0 serial: K1HYUGWF size: 5589GiB (6001GB) capacity: 7231GiB (7764GB) capabilities: 7200rpm partitioned partitioned:dos configuration: ansiversion=6 logicalsectorsize=4096 sectorsize=4096
i did a bit further digging and experimentation now that i got my 4Kn drives dug out of my array, it seems they are variable sector size… which shouldn’t mean anything really… tho i cannot help but consider this is why they aren’t acting like they are suppose to… and may i’m just to new with using SAS drives, oh god maybe i have to read the manual…