Problem with multi connections on iSCSI Target
Hi there, i'm running into a problem with my Synology DiskStation and vSphere 5.1. I created a LUN on my Synology and set up an iSCSI Target with multiple connections allowed!While having only one ESXi...
View ArticleCan't delete or unmount datastore
Getting this error when trying to remove datastores. " Cannot read the host cache configuration because some other process is modifying it at this time." We aren't using an ssd for caching, and I've...
View ArticleUnable to remove datastore
Hi, When I try to remove a datastore from vsphere I get the following error: Call "HostDatastoreSystem.RemoveDatastore" for object "datastoreSystem-15" on vCenter Server "xxxxxx" failed. The datastore...
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What does "Drive Type" (SSD vs Non-SSD) really do?
I have a FreeNAS iSCSI array which identifies itself as SSD storage, even though it isn't (it's 6x7200rpm drives used for testing). I'm wondering what impact, if any, that could have on my...
View ArticleHow to Prove VAAI is enabled on a LUN or ESX server with PowerCLI
How do I prove VAAI is enabled on a 5.5 LUN (datastore) and ESXi server with PowerCLI. I have KB article 1021976 and it shows how to get it from the GUI and esxcli. How do I get it from PowerCLI? What...
View ArticleA disk shelves can have SAS, SATA or SSD install?
can i know is SAS, SATA and SSD is brand or? sorry new to storage....
View ArticleChanging Path Selection Policy
I need to change the PSP on my ESXi hosts from Fixed to MRU as per storage vendor recommendation. Should I plan to put my host in maintenance mode to do this and move the vms off it? What is the...
View ArticleDisabling SIOC
Is there any possible risk to a workload if I disable SIOC on an RDM LUN while the RDM LUN is in use? It was previously mistakenly enabled.
View ArticleReclaim disk space
Hi! This is probably just a easy answer on this, regarding reclaim space in vmwareStorage: HP 3par SSD and FCsetup: thin provLUN 6 2TB datastore Vmware...
View ArticleISCSI enabling jumbo frames
Hi Everyone, I just want to make sure I am on the right track here. In theory, I should be able to enable jumbo frames to 9000 on my switch and SAN without affecting the hosts. The Scenario would be:...
View ArticleCannot use local SSD to create vFlash Cache. The disk appears to have an...
~ # esxcli storage vflash device listName Size Is Local Is Used in vflash Eligibility------------------------------------ ------ -------- ----------------- ----------------------naa.xxxxxxxxxxx 190208...
View ArticleESX 5.5 raid5 9TB
Hi All, so i'm wondering if i can setup multiple partitions or at least 2 partitions on my raid5 9TB array.partition 1, around 500GBs for VMs only.Partition 2, storage 7.8TB, that i can probably map as...
View ArticleDatastore sizes do not match all vm's used sizes
Hey guys, i'm new in Vmware and have a storage background and i'm wondering if its correct what i see when i compare the total size of all datastores vs the totals of the "used space" of all vm's...
View ArticleIBM v7000 thin provisioning inconcistencies
Hi all, We use an IBM v7000 SAN and noticed something odd. We presented a 2 TB thin provisioned volume from the v7000 to VMware. VCenter shows 724 GB free on that VMFS volume but the IBM v7000 GUI is...
View ArticleSetting up a Powervault MD1200 within vpshere
Hello, All of my host servers have been stand alone servers or previously setup SANs. We've just purchased a Powervault MD1200 DAS that we are going to be setting up this weekend.We are going to...
View Articlevnxe3150 thin/thick provisioning and questionable performance
Hello This is my fist SAN project and also my first post here. So please bear with me. First let my give you some information about our hardware:We have 2 HP DL380p G8 E5-2690v2 (2 x 10 cores) servers,...
View ArticleHow to Shrink the VMDK with Thin Provisioning Enabled
Hello: I have create a Virtual Disk with Thin Provisioning enabled. May I know how can I reduce the disk size? It was because I only have 5G file on the disk but the actual size is about 10G. Does...
View ArticleWindows Mirroring on Guest Server 2008 R2
Hi, Is there any issue creating a Windows mirror at the guest level. I am using Server 2008 R2 and have ESXi 5.5. The mirror would be setup on a separate datastore on a separate SSD. I have done...
View ArticleAuto Tiering Mystery
Hi Guys, so i have a question regarding a feature called Auto Tiering on a Compellent storage device in our special use case and i hope that somebody has some experience or can give me a punch in the...
View ArticleFirst datacenter storage questions
I’m building my first datacenter soon. Two UCS servers and a EMC VNXe 3200 SAN. The SAN will have 6x 900gb 10k drives. I’m looking for some input on raid level and carving the store. For my server...
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