Hi eveyone, 

I have setup three Supermicro storage servers, which are running HGST 
HUH728080AL5200. I wanted to export each drive as a raw LUN over iSCSI. A fter 
having installed the latest OI hipster and recovering the primary label from 
the backups on each disk (which were all bad/corrup, for whatever reason), I 
went forth and used fdisk to partition the drives to one big partition, on 
which I created a LUN, which I then exprted over iSCSI. 


The issue I am now facing is, that the read speeds are very good, but writing 
is really slow. The drives are HGST HUH728080AL5200 and HGST states the 
following about them: 




Interface: SAS 12Gb/s 
Capacity: (GB) 8TB 

Sector Size (Variable, Bytes/sector): 4Kn: 4096, 4112, 4160, 4224 


Could it be that the fact that the COMSTAR LUN only advertises 512 byte sectors 
leads to this issue and if yes, can I do something about that? 


Thanks, 
Stephan 
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