improving iSCSI performance: Delayed ACK, IOs per path, Large Receive Offload
I've raised a ticket with VMware for these 3 settings and I'll post the response, but I'd also appreciate any comments anyone makes. We have two Dell R620 servers with ESXi 5.0 U1, directly connected...
View ArticleRe: Excessive load balancing requests
I saw a similar thread here:Re: Esxi cluster issue I was able to resolve some errors by rescanning hbas and vmfs from all of the hosts, but I'm still getting more load balancing messages than usual....
View ArticleRe: improving iSCSI performance: Delayed ACK, IOs per path, Large Receive...
I'd first examine the array to ensure that access to the spindles is optimal before working attempting to tweak advanced network configuration values - these are typically fine to be left at default...
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Re: Best Practice Setting up VNXe 3150
How did you get the datastore to present out of both storage proccessors when creating new datastore it only allows to use either a or b
View ArticleRe: Migrating and converting thin prov. disks to thick, to SDRS cluster not...
Did you ever find a solution to this, I am seeing the same problem with vCenter 5.0 (seems to be U1)Maybe this is the problem? VMware KB: Changing the disk format from thick provisioned to thin...
View ArticleRe: VSA Install fails whatever we do :(
No, going for a greenfield install now, but again same issue pfff.. Losing faith in VSA all together
View ArticleRe: VSA Install fails whatever we do :(
Thanks goodness mine was resolved after changing the timeout from 3 mins to 5. Maybe if could work for you if the increase a bit more to 10 mins maybe.? Good luck.
View ArticleVeeam b&r Direct san
Dear all, I need to set up a direct san connection from the veeam server vm to our HP EVA 4400.However in windows 2008 r2 on the veeam vm the iscs initiator cannot connect to the ip address of the EVA...
View ArticleMultiple LUNS
We are in the process of testing vmotion in our environment and I have 2 questions. 1. To vmotion between two hosts, do they have to both be the same version of Vmware? We have a 5.1 and a 4.1 host...
View ArticleRe: Multiple LUNS
You can vMotion between ESXi 5.x and 4.x, and mixed clusters are fully supported. Caveats being that virtual hardware 8 and VMFS-5 are not supported on ESXi 4.x. Source: Mixing ESX/ESXi Versions in an...
View Articleunmap a lun
Dear Team, One LUN is mapped /shared on to two standalone esx host, now my concern is to unmap that LUN from esx1 without losing data. ESX1 : 4.1.0 260247ESX2: 4.1.0 800380 Need ur asisstance to unmap...
View ArticleRe: unmap a lun
Have a look at these two guides, which document the procedure: Removing a LUN containing a datastore from VMware ESXi 4x and ESX 4.x (1029786)Best Practice: How to correctly remove a LUN from an ESX...
View ArticleRe: unmap a lun
Many thanks eeg3, if i want to preserve data on volume then i have to follow these steps.plz correct me if i m wrong. Unregister all objects from the datastore including VMs and TemplatesEnsure that no...
View ArticlePerformance on StorageTek 6140 array
Hi Guys, I am looking for some thought, feedback or similar experiences when using StorageTek 6140 arrays.We have an environment made up of HP blades using virtual connect running ESXi 5.1. Our storage...
View ArticleRe: SVMotion Logs
Hi, The vMotion events (normal vMotion and Storage vMotion) will be logged on your host. (/var/log/vmware/hostd*.log) you wil be able to use the UUID of the VMFS datastore...
View ArticleRe: Normal response times as seen in iometer
Hi, can you provide a little background info, for example: Storage ArrayDisksRaid settingsFC Switch and speedsServer model HBA cards and driver usedNumber of pathsPSP usedSize of LUN regards
View ArticleRe: SAN / RAID / vCenter issue
Hi Patrick, I've got a ticket open with VMware support who should be able to shed some light on what's happened. I'm leaning towards storage controller, though. And we've got the ball rolling with...
View ArticleRe: SAN / RAID / vCenter issue
Hi Have you been able to fix things together with Fujitsu?If your virtual environment loses access to its storage, its basically one of the wort things that could happen.That your host lost access to...
View ArticleRe: SAN / RAID / vCenter issue
No SAN in general is going to magically handle a RAID array failure. A specific answer depends on what exactly happened. If there's a concern that RAID5 isn't enough because two disks may fail - RAID6...
View ArticleRe: SAN / RAID / vCenter issue
Morning, The SAN front end was one of the first places I looked after we had managed to get everything back up again. All lights were green but on further investigation there were 'some' disk errors...
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