• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

Yellow Bricks

by Duncan Epping

  • Home
  • ESXTOP
  • Stickers/Shirts
  • Privacy Policy
  • About
  • Show Search
Hide Search

vSphere 5.5 nuggets: Change Disk.SchedNumReqOutstanding per device!

Duncan Epping · Sep 3, 2013 ·

Always wanted to change Disk.SchedNumReqOutstanding per device instead of per host? Well now with vSphere 5.5 you can! I didn’t know about this either, but my colleague Paudie pointed this out. Useful feature when you have several storage arrays and you need to tweak these values, now lets be clear… I do not recommend tweaking this, but in the case you need to you can now do it per device using esxcli.

Get the current configured value for a specific device:
esxcli storage core device list --device <device>

Set the value for a specific device::
esxcli storage core device set -d <device> -O <value between 1-256>.

Share it:

  • Tweet

Related

Server 5.5, dsnro, esxi, Storage, VMware, vSphere

Reader Interactions

Comments

  1. Brent Cochran says

    15 January, 2014 at 18:03

    Cool feature – we are in the process of deploying 5.5 now and this will be very useful for getting more performance out of our AFA without destroying our SATA tier. Our host deployment scripts are all in PCLI -any chance that you know how to get into these settings with that CLI?

    Thanks!

    BC

  2. Matan says

    18 March, 2014 at 18:17

    Is setting this parameter persistent over reboots?
    Is there a way to set a default value for luns from specific vendor?

    Thanks!

  3. Brent Cochran says

    25 March, 2014 at 00:35

    the answer to my question (and Matan’s) can be found here:
    https://communities.vmware.com/thread/473920

    Thanks!

    BC

  4. Gaby says

    28 August, 2014 at 19:58

    the vmware KM about this issue is
    http://kb.vmware.com/selfservice/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1268

    Gaby Gvili

Primary Sidebar

About the author

Duncan Epping is a Chief Technologist in the Office of CTO of the Cloud Platform BU at VMware. He is a VCDX (# 007), the author of the "vSAN Deep Dive", the “vSphere Clustering Technical Deep Dive” series, and the host of the "Unexplored Territory" podcast.

Upcoming Events

Feb 9th – Irish VMUG
Feb 23rd – Swiss VMUG
March 7th – Dutch VMUG
May 24th – VMUG Poland
June 1st – VMUG Belgium

Recommended Reads

Sponsors

Want to support Yellow-Bricks? Buy an advert!

Advertisements

Copyright Yellow-Bricks.com © 2023 · Log in