Re: Smartctl output for SMR drives

Wolford, Jeff (HPE Servers - Web Scale performance) wrote:
> SMR Drive identification - See clause 9.11.5.12.1 of the ATA ACS-4 standard (www.t13.org)
>
> Info is in Identify Device Data Log Address 30h - Support Capabilities - page 03h - Offset 104...111
> 	Use smartctl -l gplog,0x30,3 to get the raw "Support Capabilities" page
>
> For the 3 types of SMR drives:
> DM - Device Managed
> 	The device may set the zoned field = bits 1:0 = 10b or it may not (most DM drives)... i.e. it's optional and came out long after DM drives were in production
> HA - Host Aware - zoned field = bits 1:0 = 01b (Required)
> 	Has information in the Zoned Device information - Page 09h - Offset 0..7 is non-zero
> HM - Host Managed (Type 14) drive - zoned field = bits 1:0 = 00b

There is also a copy of the ZONED field in bits 1:0 of word 69 from ATA 
IDENTIFY DEVICE data.

This could easily be printed using "smartctl --identify=wb /dev/ice | 
grep Zoned"


Christian


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