Drive Volume Management; Update Your System To The Latest Software Release - Oracle 3.2 TB NVMe User Manual

Drive Volume Management

Ensure that when the EFI label is created by ZFS, the default start sector is 256, which
aligns S1 with 128k (if the block size is 512). The vtoc label default cylinder size is 50176
(224*224) blocks. If the block size is 512, the default Oracle Solaris Operating System
partition aligns with 512k. For example: 50176*512 = 49*512*1024.
Specify and ensure 4k alignment: The default start sector of 34 for EFI labels is not a 4k
aligned value. Use the partition subcommand of the Solaris format command to change the
start sector to 256, or any other 128k aligned value. Note that there are 512B per sector.
The ZFS file system automatically aligns partitions to start on 8k boundaries when a full
■
disk is allocated to ZFS (recommended). If you allocate individual EFI partitions to a ZFS
pool, ensure the partition is 4k-aligned as discussed above. For optimal performance of ZFS
with the 3.2 TB NVMe SSD, refer to the ZFS Best Practices Guide and the ZFS Evil Tuning
Guide.
For highest performance, make sure that the system meets the physical, environmental, and
■
electrical specifications listed in
Related Information
"Preparing the NVMe Storage Drive for Installation" on page 23
■
Tuning ZFS When Using Flash Storage
■
E29022/chapterzfs-flash.html
Drive Volume Management
A volume manager can present multiple SSD devices as one larger volume. Use the Automatic
Storage Management (ASM) volume manager or other volume manager to concatenate multiple
flash memory domains. For example, a volume manager can be used to concatenate four 3.2 TB
domains into a single 12.8 TB volume.
Refer to the documentation for more information at
server.111/b31107/asmcon.htm.

Update Your System to the Latest Software Release

It is highly recommended that you update your system to the latest software release before
you use the system. Software releases often include bug fixes, and updating ensures that your
server software is compatible with the latest server firmware and other component firmware and
software.
28 Oracle 3.2 TB NVMe SSD User Guide • July 2016
"Specifications" on page
http://docs.oracle.com/cd/E26502_01/html/
http://docs.oracle.com/cd/B28359_01/
14.