+1
-Zhong
Larry Liu wrote:
I would like to propose a new OpenSolaris project called multiple disk sector size support. This project is to enable Solaris to support disks with variable sector size in powers of 2 starting at 512 bytes and upto 4096 bytes, i.e: 1 KByte, 2KB or 4KB.
The disk drive industry recognizes the need for a larger sector to maintain
data integrity as areal density increases in future drives. Progressively more
error correction code bytes are required at these higher areal densities which
would increase overhead and reduce efficiency if the industry remained 512 byte
sectors. A new sector standard for magnetic hard disk drives, 4096 bytes, has
been proposed replacing the previous 512 byte sector length. IDEMA and its
members including Seagate, Maxtor, Hitachi GST, and Fujitsu have advocated for
a new industry standard for large-block sectors. And the 4096 bytes sector HDD
will be released soon.
This project is going to deliver large sector support into OpenSolaris with two
phases
Phase 1
Support both VTOC and EFI labels;
Support both raw and block disk IO;
Support ZFS on non-root disk;
Support XEN and LDOM on non-root disk
Phase 2
Boot support on large sector size disks.
Installer support on large sector size disks
I'd like to request endorsement by the Storage Developer community.
Project leaders:
Larry Liu
Nikko He
Bo Zhou
Holly Vergara
Grant Zhang
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