Questions tagged [vmware-vsan]
This tag should be used to request advice on VMware VSAN installation issues and configuration problems.
22
questions
6
votes
2
answers
595
views
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 ...
- 1,893
5
votes
1
answer
401
views
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 ...
- 210
5
votes
1
answer
299
views
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 "...
- 151
4
votes
2
answers
402
views
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 ...
- 153
4
votes
2
answers
2k
views
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 ...
- 187
3
votes
1
answer
557
views
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' ...
- 85
3
votes
2
answers
158
views
How does VMWare vSAN's RAID5/6 work
BLUF: How does VMWare's implementation of RAID5/6 work?
Below is VMWare's chart for RAID5/6 in vSAN:
It seems VMWare is altering RAID's terminology. When I hear RAID6 I think two parity of something; ...
- 1,078
3
votes
1
answer
521
views
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 ...
- 223
3
votes
1
answer
724
views
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 ...
- 243
2
votes
1
answer
355
views
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....
- 214
2
votes
1
answer
125
views
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'...
- 85
2
votes
1
answer
399
views
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 "...
user35213
2
votes
1
answer
698
views
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 below.
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere....
- 89
2
votes
0
answers
982
views
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 ...
- 210
2
votes
0
answers
238
views
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 ...
- 21
1
vote
1
answer
304
views
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
...
- 151
1
vote
1
answer
132
views
How to restore vmdk from two vsan node cluster?
I've setup 2 node cluster vsan and with a witnees host.
I usually run only one node and keep synchronized every night by open another node, after that i let one node in maintance mode and shut it down....
- 129
1
vote
0
answers
296
views
VMkernel memory consumed by vSAN
My organisation operates some clusters consisting of three ESXi-Hosts each with VMware 6.5. Two nodes act as HA cluster with vSAN, the third one is the witness. There are only three VMs on the two ...
- 11
0
votes
1
answer
834
views
What kind of operating system SAN device can have?
Ciao, I don't understand does SAN device have an operating system? I know it is connected to servers in data center by san switch and it provides data drives to the servers but how the server ...
- 13
0
votes
2
answers
1k
views
VSAN Disk Space Utilization Failed alert
I've implemented VSAN in my home lab and I'm trying to understand why I'm receiving a "Disk Space Utilization" failed alert.
The Cluster consists of a pair of servers and a Witness appliance. Each ...
- 243
-1
votes
1
answer
37
views
robo vsan cluster one node is almost full and the other half [closed]
I have a 2 node vsan cluster. One server got an alarm something like vsan disk errors. But everything still works, so i am moving vms off of this storage.
But now I find that the "healthy" ...
- 21
-2
votes
1
answer
103
views
One vmware vsan and two data stores
I have five servers in one vsan cluster and one distributed switch. I have two disk groups per server, for a total of ten disk groups. I would like to have the first disk group in each server to ...
- 151