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Questions tagged [vmware-vsan]

This tag should be used to request advice on VMware VSAN installation issues and configuration problems.

20 questions
6
votes
2 answers

vSphere Replication Performance Impact

We're planning to move some production workloads to a UCS environment using vSAN and all flash. We are looking at vSAN with replication as we have two identical nodes in two data centres. Is there a performance hit from using replication that would…
Matt
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5
votes
1 answer

With a vsan issue where you cant access vcenter, should you ssh into all machines and power them down prior to restarting esxi host?

So I have a vsan cluster, 4 esxi hosts all contributing to vsan as well as compute. Vcenter lives in esxi01. Esxi01 is not responding and I cannot open the web gui. I can still ping every vm and ssh into most. I believe esxi01 is out of file…
IT_User
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4
votes
2 answers

Highly available virtualized SQL Server on 2 ESXi hosts and one SAN storage

I have two ESXi hosts. I am planning on installing a SQL Server instance on each hosts and make them highly available. The two hosts are connected to one SAN storage. The storage is Dell EMC PowerVault and it supports both Dynamic Disk Pools and…
Saleh Omar
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4
votes
2 answers

VSAN: Initialization for SSD Failed

ITNOA I have two SuperMicro servers and install ESXI 6.0.0 on both of them and create vSAN with them and installs all VMs on vsanStorage. and each of them have two SSD storage with RAID 1 and two HDD with RAID 1. after power failure in my data…
sorosh_sabz
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4
votes
1 answer

vmware vsan failures to tolerate

I'm migrating from an Solaris iSCSI backend in my lab to vSAN. I having difficulty understanding vSAN redundancy. I would like to configure a cluster to survive a host/disk failure. I know that "stripe width" and "failures to tolerate" are related…
jwc
  • 141
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3
votes
1 answer

Creating a VSAN datastore

I am trying to set up my first HA cluster and I have some hard time digging into VSAN datastores. I have two ESXi hosts both with two 480 SSD hard drives in RAID 1 Can I add the existing hosts' disks to VSAN datastore? As far as I know, the ESXi…
d3m0n
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3
votes
1 answer

vsphere network design for vsan and ft-enabled cluster

I am looking for some recommendations on the network design for my ha-ft and all-flash-vsan-enabled vsphere cluster. I've planed around vsphere a bit, but newbie to vsan and ha/ft. I've Googled and searched here on StackExchange, but I just can't…
Arthur
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3
votes
1 answer

Specify which disk group a VM should use in VMWare VSAN

I have a small, two-node setup, plus the virtual VSAN witness virtual appliance. The two physical nodes are directly connected, using two 10GbE nics. Each node has two disk groups containing: Disk Group 01 (All Flash) 1x 128GB SSD (Cache) 1x 1024GB…
woter324
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2
votes
1 answer

Intermittent vSAN issue

I have a test lab deployment and am facing some issue in the first vSAN (4 nodes) creation (it works some times, and other times it doesn't) I'm trying to troubleshooting the issue as to when it doesn't work what is going on. Once I have added the…
Huud Rych
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2
votes
0 answers

Any suggestions on recovering from a 100% utilized vSAN?

I am seeking suggestions and comments on how to recover from a 100% full vSAN (without the obvious, reset to factory option). I have an 8 node ESXi cluster which runs entirely on a vSAN backing. Due to circumstances with a vendor that I would…
NorthVandea
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2
votes
1 answer

Confirm full evacuation of vSAN host

Just placed my first host running VSAN 6.2 in to maintenance mode and selected full evacuation. The task has completed and the host is in maintenance mode. Part of me is worrying though about the "Full Evacuation" part of the VSAN migration. Bar…
user35213
2
votes
1 answer

Illegal Request error with unmap on vmware

I have enabled unmap feature on vSAN and then I powered off / powered on all VMs to enable unmap as described in the KB…
librhnylmz
  • 21
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2
votes
0 answers

3-node vmware vsan cluster. One host failing to rejoin the vsan cluster

Ran into an interesting issue. So we have a 3-node vsan cluster (all three nodes contribute computer and storage). We can call these three nodes esxi01, esxi02, and esxi03. Users reported errors and upon investigating the following was…
IT_User
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2
votes
1 answer

How could the vSAN datastore capacity be equal to the raw capacity of the physical disks in an all-flash cluster?

I have configured a new 3-node all-flash vSAN cluster as the default RAID 1 (only option). Each node has one cache drive and four capacity drives; the total capacity drive space of each node is 3280GB. I have configured the vSAN datastore to use…
Shōgun8
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1
vote
1 answer

Multicast to work on IPoIB with ESXi 6.5

My lab is running: ESXi, 6.5.0, 4887370 OFED 1.8.2.5 ConnectX-2 MHQH29C with 2.9.1000 IS5035 switch with subnet manager I followed the instructions here: 10Gb SFP+ single port = cheaper than dirt I am able to get IPoIB working and all of the…
jwc
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1
2