Solaris 11 Ssd Trim Support

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SSD trim support and Oracle Solaris Express 11

    https://community.oracle.com/thread/2145623
    Mar 11, 2013 · The equivalent of TRIM is supported as SCSI unmap in Solaris 11.1 and ZFS will recognize that blocks are reclaimed. We have some challenges due to 15804599, which means SSD performance is severely impacted by SCSI unmap. The SCSI unmap is currently disabled due to this problem starting in S11.1 SRU 3.4.

Tuning ZFS When Using Flash Storage - Oracle Solaris 11.1 ...

    https://docs.oracle.com/cd/E26502_01/html/E29022/chapterzfs-flash.html
    Tuning ZFS When Using Flash Storage. ... This change requires a fix to our disk drivers and for the NVRAM device to support the updated semantics. If the NVRAM device does not recognize this improvement, use these instructions to tell the Solaris OS not to send any synchronize cache commands to the array. ... The Solaris 11.1 OS has a problem ...

Unix Administration: Solaris 11.1 ZFS Write Performance ...

    https://schalwad.blogspot.com/2013/12/solaris-111-zfs-write-performance.html
    Solaris 11.1 introduced the support for ATA TRIM, SCSI Write Same/UNMAP. However, some storage devices take a long time to execute the UNMAP command. This causes performance issues for random write workloads against a ZFS pool built on such devices.

Using ZFS on Solaris - Pure1 Support Portal

    https://support.purestorage.com/Solutions/Oracle/Oracle_Solaris/Using_ZFS_on_Solaris
    ZFS is a combined file system and logical volume manager by Sun Microsystems. Pure Storage will support the usage of ZFS, but we do recommend that some tuning is done so as not to conflict with processes already handled by the Pure Storage FlashArray. This document will highlight our best practice recommendations for optimal performance with ZFS.

Tuning Disk Target Driver Properties - Managing SAN ...

    https://docs.oracle.com/cd/E36784_01/html/E36836/goubk.html
    Tuning Disk Target Driver Properties. This appendix explains how to tune the Oracle Solaris disk target driver (sd or ssd driver) properties in the .conf file by using the sd-config-list or ssd-config-list global property.The appendix describes the following formats for tuning disk target driver properties:

SSD Performance Degradation and SCSI UNMAP Command

    https://elatov.github.io/2017/08/ssd-performance-degradation-and-scsi-unmap-command/
    Aug 12, 2017 · SSD Performance Degradation and SCSI UNMAP Command. Aug 12, ... Modern Operating Systems use the TRIM command to inform the SSD controller when they delete a block so that it can add the associated Flash cell to its free list and knows that it can be overwritten. ... Solaris/ZFS added support for UNMAP in the Solaris 11.1 release, however their ...

TRIM and ZFS - reddit

    https://www.reddit.com/r/zfs/comments/3vvbhh/trim_and_zfs/
    TRIM and ZFS So I've been trawling the internet for a couple of days looking for information on which versions support TRIM so far I've only found Solaris 11 and FreeBSD 9.2+. The illumos folks seem to be working on it but I can't find and roadmaps as to when it would be released.

Why SSD TRIM Support is so Important and How to Enable It

    http://www.buildcomputers.net/trim-support.html
    That's why TRIM is so crucial: It makes sure that your SSD performance doesn't degrade with use, and keeps it (nearly) as fast as new. In order for TRIM to work its magic, two conditions have to be met first: Your operating system has to support TRIM command (e.g. Windows 7 and Windows 8) Your solid state drive's firmware has to support TRIM as ...

Solaris 10 and TRIM command - LinuxQuestions.org

    https://www.linuxquestions.org/questions/solaris-opensolaris-20/solaris-10-and-trim-command-4175493235/
    Jan 31, 2014 · Trim is not supported on Solaris 10. I believe Solaris 11 supports Trim with ZFS, but not with SVM. Without Trim, I suggest reserving 10-15% of the drive, so the SSD's garbage collection can be more effective at reducing write amplification.



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