That's odd. My first guess is Jumbo Frames...which I'm sure you and your team have addressed.
I presume you're running IOMeter from inside a Windows VM? On Wed, Aug 10, 2011 at 4:45 PM, Steven M. Caesare <[email protected]>wrote: > At the moment just IOmeter. We were scratching our heads wondering why we > were seeing ~9MB/sec on the SSD’s. The last test ran at 267MB/sec.**** > > ** ** > > Not sure if the 6224’s are affected… but flow control is broken on all > firmware for the 8024’s. Dell has pulled it form the website and is urging > customers to downgrade.**** > > ** ** > > -sc**** > > ** ** > > *From:* Harry Singh [mailto:[email protected]] > *Sent:* Wednesday, August 10, 2011 4:36 PM > > *To:* NT System Admin Issues > *Subject:* Re: Dell PowerConnect & iSCSI**** > > ** ** > > I just implemented some powerconnect 6224's and a PS4000XV today actually > and wondering what you're using to monitor read/write performance and just > speed of the array in general ? SANHQ or IOMeter ?**** > > ** ** > > Thanks for the information Steven...those SSD drives must fly.**** > > ** ** > > ** ** > > On Wed, Aug 10, 2011 at 4:31 PM, Steven M. Caesare <[email protected]> > wrote:**** > > He was the lost 6th half-brother.**** > > **** > > And as an update: it appears that as Enterasys switches and Dell switches > don’t play nicely together under some circumstances. Taking the Dell > PowerConnect off their uplinks to the Enterasys S4’s improved thruput on the > SSD-based EqualLogic’s we are testing by better than 25x …**** > > **** > > -sc**** > > **** > > *From:* Doug Hampshire [mailto:[email protected]] > *Sent:* Tuesday, August 09, 2011 9:42 AM**** > > > *To:* NT System Admin Issues**** > > *Subject:* Re: Dell PowerConnect & iSCSI**** > > **** > > Isn't germane one of the Jackson 5?**** > > On Mon, Aug 8, 2011 at 6:08 PM, Steven M. Caesare <[email protected]> > wrote:**** > > Gotta give me points for at least trying to make it germane…**** > > **** > > -sc**** > > **** > > *From:* Eldridge, Dave [mailto:[email protected]] > *Sent:* Monday, August 08, 2011 6:06 PM**** > > > *To:* NT System Admin Issues**** > > *Subject:* RE: Dell PowerConnect & iSCSI**** > > **** > > That’s a stretch there Steve for not being way OT: J**** > > **** > > Wow do let us know how it goes. I don’t use power connect switches anymore > but I have plenty of equallogics.**** > > Good luck.**** > > **** > > dave**** > > **** > > *From:* Steven M. Caesare [mailto:[email protected]] > *Sent:* Monday, August 08, 2011 3:44 PM > *To:* NT System Admin Issues > *Subject:* Dell PowerConnect & iSCSI**** > > **** > > Just to advise the list:**** > > **** > > Dell has pulled their 4.x.x.x versions of firmware for their 10Gb > PowerConnect switches. There are known issues with flow control, and they > can fail under high load after having been in service for extended periods > of time.**** > > **** > > This is particularly triggered in iSCSI environments. In our case it was > Dell’s own EqualLogic SAN’s that killed them for us. For some time the > EqualLogic and PowerConnect groups disagreed on which firmware was “good”. > We finally got them to talk and v3.1.4.16 has their blessing.**** > > **** > > Of course, the syntax was changed significantly between v3.x.x.x and > 4.x.x.x, thus if you are already at 4 you cannot export your current > configuration and re-import on the downgraded v3 chassis. You must manually > reconfigure.**** > > **** > > Here’s pulling for a successful downgrade tonight…**** > > **** > > -sc**** > > **** > > PS- I claim this is NT related because we have NT boxen mounting iSCSI > LUN’s via these switches J**** > > **** > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin**** > > This e-mail contains the thoughts and opinions of the sender and does not > represent official Parkview Medical Center policy.**** > > This communication is intended only for the recipient(s) named above, may > be confidential and/or legally privileged: and, must be treated as such in > accordance with state and federal laws. If you are not the intended > recipient, you are hereby notified that any use of this communication, or > any of its contents, is prohibited. If you have received this communication > in error, please return to sender and delete the message from your computer > system.{token}**** > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin**** > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin**** > > **** > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin**** > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin**** > > ** ** > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin**** > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
