SPC-5 and SBC-3 documents posted in support of ZBC

Gerry Houlder gerry.houlder at seagate.com
Wed Jan 8 06:51:46 PST 2014


Formatted message: <a href="http://www.t10.org/cgi-bin/ac.pl?t=r&f=r1401081_f.htm">HTML-formatted message</a>

Current plan is autonomous drives and host assisted SMR drives will have
direct access device type while restricted SMR will have the new ZBC device
type. A field in the block device characteristics VPD page will allow
differentiation of host assisted versus restricted SMR types.
On Tue, Jan 7, 2014 at 4:30 PM, Calvin Chen <cachen at microsoft.com> wrote:
>  Hi Ralph,
>
>
>
> I have couple questions regarding the proposed SMR device identification
> spec.
>
>
>
> 1.	   Will autonomous SMR, host assisted SMR and restricted SMR target
> device share using the same Peripheral device type 14h = ZBC – Zoned block
> device?
>
> 2.	   If a storage target device has the HAS_ZBC bit set to 0 and
> Peripheral device type 14h = ZBC, does it mean the storage target device is
> a restricted SMR drive?
>
>
>
> Thanks
> Calvin
>
>
>
>
>
> *From:* owner-t10 at t10.org [mailto:owner-t10 at t10.org] *On Behalf Of *Ralph
> Weber
> *Sent:* Monday, January 6, 2014 6:34 PM
> *To:* t10 at t10.org
> *Subject:* SPC-5 and SBC-3 documents posted in support of ZBC
>
>
>
> As requested by today's ZBC call, two documents are being posted for
> January CAP consideration.
>
> SPC-5: Assign device type code to ZBC
> http://www.t10.org/cgi-bin/ac.pl?t=d&f=14-017r0.pdf
>
> SBC-4: Update Block Device Characteristics VPD page for ZBC
> http://www.t10.org/cgi-bin/ac.pl?t=d&f=14-018r0.pdf
>
> See you in Irvine,
>
> .Ralph
>



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