Physical RDMs pointer files
I have 2 SANs, let’s call these SAN1 and SAN2.SAN1 is being de-comissioned. I have several physical RDM disks on SAN2 but their pointer files are on a 'quorum' disk that is on SAN1. The actual...
View ArticleHow to fix VM DataStore allocated which is less than virtual drive?
Hello,On my VMWare ESXi 6.0.0, two VMs shows allocated drive space lower than the virtual drives allocated to them (thick provision)! Maybe it is related, on one VM, the C drive used space do not...
View Articlestorage drs
ı have emc storage and using VNX FAST VP , FAST Cache . Also 3par so using tiering. now i want to learn that can i use storage drs on my vcenter 6 with them ?
View ArticleiSCSI with 2 VMKs per host
I've inherited a vCenter environment with an iSCSI setup. I think it was poorly architected, but its been a while since I've dealt with iSCSI storage so I wanted to run it against the cloud brain of...
View ArticleDuplicate LUN Exports hidden in Client
Hello, We had some HP 3Par LUNs exported twice to the same host with different LUNs IDs. The duplicate LUNs are hidden in C# and WebClient. That means if I check the LUN in GUI, path count is 4. If I...
View ArticleVmware 6.0 Datastore compressed LUN
Hi. I have a "storage" based on HP G7 + DAS Supermicro. It runs OmniOS + nappit and shares a LUN via FC to VMware.I got x2 compression ration on this volume. root@kup-san-02:/root# zfs get...
View ArticleDifference between VMFS 5.58, 5.60 and 5.61
What is the difference between the different versions of VMFS - 5.58 of ESXi 5.1, 5.6 of ESXi 5.5 and 5.61 of ESXi 6.0? There doesn't seem to be any change logs that I can find, and there doesn't seem...
View ArticleStorage vmotion fails with "Operation is not valid due to the current state...
Im attempting a storage vmotion and getting this error: "Operation is not valid due to the current state of the object". Any ideas why this is?
View ArticleMark as flash as default
Hello. I'm having trouble marking storage devices as flash. These are SSDs on RAID-arrays shared over ISCSI (Starwind).Is it possible to create a claim rule to mark ALL iscsi-luns as flash on a host?...
View ArticleLimit all vritual machines IOPs
Hey guys, Do you know of any way to limit all the virtual machines, or virtual machines by tag to a specified number of IOPs? So far I was limiting vms by enabling Storage Control Policy and settings...
View ArticleThin provisioned custom alarm trigger
Hi, I am trying to understand when "Thin-provisioned volume capacity threshold exceeded" custom alarm in Vcenter 6.x would get triggered.I have a datastore backed by iSCSI based LUN and the storage...
View Articlestorage provider on vcenter 6.5
Hi I have vCenter Server 6.5 (VCA) and VNX5400.I have added URL (https://<IP of SP>/vasa/services/vasaService) in vCenter -> Configuration -> Storage ProvidersI see new storage provider for...
View ArticleRebuilding Environment from 5.1 to 6.5 will all drives be accessible?
I am rebuilding a vSphere 5.1 environment to 6.5. I will be doing an upgrade will be shutting each host down individually rebuilding it to 6.5 and then adding to the 6.5 vCenter. The 5.1 environment...
View ArticleiSCSI virtual network inside ESXi 6.5 host
I am trying to build my lab server and I am stuck at the point of creating a virtual iSCSI network. My setup is as follows:Microserver Gen8 with SATA SSD and additional HBA in IT-mode.ESXi 6.5 is...
View ArticleSynology Rackstation as iSCSI using ESXI 6.5
Can anyone provide a tutorial or something of sorts on how to connect ESXI 6.5 to my synology as a iSCSI datastore? I've already followed instructions for configuring the Rackstation with LUN and such,...
View ArticleHigh fragmentation rate in large datastores - why is that ?
I noticed that datastores larger than 4 TB tend to use a unexpectedly high fragmentation rate for VMDKs.I often see thousands of fragments while there would be enough free space to allocate the vmdks...
View ArticleНизкая скорость записи на SSD диск.
Добрый день.ESXi 6.5HDD 500 GBSSD 128 GB (TR150 SLC) с заявленным Random Write2 (4 KiB, QD32) Up to 40,000 IOPSКанал связи - Gigabit Ethernet (1000Mbps) Что делаю:Заливаю на сервер, посредством...
View Articleopen source Ceph based iSCSI SAN
Hi, I'd like to introduce PetaSAN, an open source iSCSI SAN based on Ceph.http://www.petasan.orgIt provides active/active highly available disks and has good support for VMWare such as VAAI ATS.Hope...
View ArticleUnable to add all shared storages on a HA cluster?
Hi All, I am having a HA cluster of 3 hosts which are connected to 2 shared storage (1- NFS on freenas & 2- iSCSI on WS2012 ), now i am able to connect two hosts to all shared NFS &...
View ArticlePerformance question iSCSI, VMDK , RDM disks
I am sure that there are many factors involved here but when standing up new servers it seems we are always wondering which virtual disk option should we select and what would give us the best...
View Article