All Questions
Tagged with vmware-esxi storage-area-network
74
questions
0
votes
2
answers
170
views
Server's Disk Queue Length is high, but Disk Bytes/sec is lower than it's capable of
I have an environment running SQL Server on a Windows VMWare platform using a SAN with SSDs set up in RAID 6, and using Veeam for server backups and LiteSpeed for SQL Server backups.
I've had a ...
- 101
0
votes
1
answer
176
views
RAID 0 for Development
Hello fellow administrators, I am seeking high level guidance on the following situation:
First the context of the environment: internal, all virtual (vmware), development use only, performance ...
6
votes
1
answer
4k
views
can I share the same datastore between different VMware 6.5 clusters?
Is it possible to share the same datastore between multiple VMware clusters of the same version (both 6.5 or both 6.7)?
It is the norm to share the datastore between multiple hosts in the same ...
- 5,846
3
votes
1
answer
184
views
Does data reduction work cross datastore?
I am the proud owner of a Unity 400F all flash SAN connected through FC. I have multiple datastores setup for my vm infrastructure and I was wondering if data reduction (what EMC calls their combined ...
- 405
2
votes
2
answers
496
views
Does changing vmware datastore multipathing policy disrupt connectivity
We have several VMware ESXi hosts accessing multiple datastore stored on a fiber channel SAN.
We have found that some of the hosts are still set to "Most recently used" mode for their multipathing ...
- 1,743
0
votes
1
answer
226
views
Why is my data not showing up on a shared vmdk on another VM?
Configuration:
Netapp (SAN) providing a 5GB FC LUN to VMware hosts (datastore).
(2) Server 2012R2 datacenter VMs configured with a 5GB shared vmdk using paravirtual SCSI controller with SCSI Bus ...
- 25
0
votes
1
answer
315
views
Why is Group Manager reporting different space available than VSphere?
I received a warning that 84% of a datastore is being used from my EqualLogic Group Manager. The 1TB LUN shows that 857.74 GB are in-use. When I go to VSphere and look at the datastore it shows that ...
- 291
2
votes
1
answer
2k
views
Fiber Channel (8 Gb) or iSCSI 10 Gb [closed]
I'd like to know your opinion about this based on your experience working with iSCI and Fiber Channel, I think i'm gonna keep with iSCSI 10Gb, but want to know what you guys think about this:
I have ...
- 299
1
vote
1
answer
133
views
ESXi 5.5 server 2012 r2 guest, can't see LUN from PowerVault MD2330i
I have created a virtualdisk inside the powervault. I assigned it to a specific host, it's own remote initiator, its own disk group (5tb).
From the client I can discover the initiator but the only ...
- 110
1
vote
2
answers
201
views
VmWare / HP EVA: How many LUNs with one DiskGroup
I know that similar questions have been asked already, but I feel that they were on a rather theoretical level and are not quite applicable to my case.
We're operating 3 ESXi 6.0 hosts, all backed by ...
- 113
0
votes
3
answers
142
views
ESXi FibreChannel Woes
I just recently got VMWare ESXi installed on one of our servers. I installed some fibre channel cards (QLogic) and for some unknown reason they show up in the storage adapters tab as an ISCSi Adapters....
1
vote
2
answers
480
views
ESXI 6.0 u2 multipathing configuration with group by prio
Is it possible to change the path grouping policy of ESXI 6.0 multipathing to group_by_priority? In essence I want to work with the grouping priorities given by a SAN storage. I didnt see any specific ...
- 21
10
votes
2
answers
10k
views
Can you connect a SAN directly to a HBA with Fibre Channel?
I am in the process of sourcing our company's first SAN as we have the need for high availability/shared storage. I have noticed fibre channel switches are extremely expensive, and for redundancy we ...
- 103
3
votes
0
answers
245
views
Finding or estimating sequential vs random distribution of existing system (VMware / SAN)
IOMeter testing says the IOPs of the storage subsystem can range from hundreds of IOPs for 100% random loads to tens of thousands IOPs for 100% sequential loads.
Is there any way I can measure or ...
- 5,726
-1
votes
1
answer
298
views
Sharing internal storage of ESXi host via fiber channel protocol
Imagine a pair of servers with fiber channel adapters. Normally each one can connect to the shared SAN storage using its HBA and fiber cords,
Now, eliminating the SAN, is it possible to interconnect ...
- 139
1
vote
1
answer
904
views
Dell R730 with QLogic 2660 16Gb FC HBAs connected to a Brocade 300 8Gb FC Switch? Will it work?
We have a standard shop with 3x Hypervisors running VMware vSphere 6.0.
The hypervisors are currently connected via 8Gb FC link to a Brocade 300 (8Gb FC) switch, which is then connected to our ...
user146882
2
votes
1
answer
5k
views
FreeBSD VMware and CAM status: SCSI Status Error
I'm running a FreeBSD 10.1-RELEASE-p19 on a VPS (VMware).
My ISP is experience a rapid data growth, and these messages spontaneous started to show up in our logs a week ago.
Sep 25 09:00:50 srv03 ...
- 185
1
vote
1
answer
1k
views
Merge Live VMware hosts into existing vcenter
We currently have 3 VMware hosts, all running ESXi 4.1. They are all HP DL380 G7's, two of them having dual Xeon E5620 cpus with 96GB RAM, and the third having dual Xeon E5645 cpus and 64GB RAN.
The ...
- 1,743
4
votes
1
answer
16k
views
VSphere web-client shows incorrect datastore capacity
On the vsphere web client I have a strange problem with one of my datastores as it's displayed capacity is incorrect. Originaly it had 1TB of disk space. After I increased it's capacity on 1.4TB the ...
- 1,164
0
votes
2
answers
5k
views
Adding additional disks to HP P2000 SAS Storage
We have a 12 bay HP P2000 SAS Enclosure with 6 drives on RAID 5 installed. The drives are configured as 2 separate DataStores for a VMWare vSphere ESXi setup.
Now we want to add:
6 additional ...
1
vote
0
answers
2k
views
VMware ESXi extremely slow Virtual disk performance compared to RDM
I have a ESXi 5.5 server running with a FC SAN.
The FC san is created using an openfiler OS with software RAID and exported with the qlatgt driver. Direct writes to this SAN when no VMFS is used work ...
- 83
1
vote
1
answer
436
views
NFS Datastore Disconnects When sVmotion Migration is Attempted
I have a EMC VNXe 3100 and I had tested both iSCSI and NFS connections from it to my hosts, with NFS appearing to be the better of the two. So I set it up and in my testing with 1 VM everything ...
- 405
0
votes
3
answers
532
views
ESX SAN overbooked, what happens if storage limit reached?
In ESX you can easily overbook the available storage with the Virtual Guests. What happens if a overbooked SAN reaches its capacity limit?
Its not an actual problem i'm faced with, we just had the ...
- 103
2
votes
1
answer
3k
views
No LUNs visible on ESXi 5.5 using Brocade 825 connected to EMC VNX 5300
We've just bought a new Dell PowerEdge R620 to replace the oldest of our 3 hosts in our vSphere cluster. The existing hosts are connected to our EMC VNX 5300 SAN using gigabit ethernet which is a ...
- 147
0
votes
2
answers
2k
views
iSCSI SAN RAID 10 Performance -- Poor Read, Good Write
I have a EqualLogic PS4000 SAN unit with the latest firmware, setup in RAID 10. I have 3 2TB Volumes on the SAN shared out via iSCSI on 2 eth ports on two different subnets. I have moved a test server ...
- 405
1
vote
2
answers
3k
views
Limiting - IOPS in VMware causing servers to run VERY slow
I have servers running a few different iSCSI SAN units. I was trying to balance IO requests to the datastores, so I started changing the "Limit - IOPS" on my servers from unlimited to 100-400 ...
- 405
3
votes
2
answers
9k
views
ESXi boot time with 9 iSCSI targets
Our ESXi hosts have always been slow booting when it came to iscsi_vmk loaded successfully - sitting here for almost 5 minutes.
In all a full server reboot takes almost 12 minutes.
We have 9 iSCSI ...
- 659
1
vote
0
answers
215
views
HP LeftHand StoreVirtual VSA host affinity
I am testing the HP LeftHand StoreVirtual VSA for ESXi 5.x (a 3 nodes setup, hosting the VMs in the same hosts that have the VSA appliances).
Is there a way to define some sort of 'ESXi host to VSA ...
- 393
4
votes
1
answer
696
views
ESXi 5x: Changing number of IOPS per path sees dramatic improvements
I'm a bit embarrassed that I've never seen or used the -iops parameter as part of the esxcli deviceconfig options.
I stumbled upon an article and proceeded to benchmark before and after using various ...
- 14k
1
vote
1
answer
736
views
VMWare Virtual Storage Appliance 5.1: Network clarification
After bludgeoning my way through a vanilla two-node VSA installation ("Greenfield"), I have a VSA setup with no machines running at the moment; just trying to get my head around how the ...
- 14k
0
votes
1
answer
3k
views
Dell Compellent SAN with ESXi 5.1 iSCSI
I have a Compellent SAN that I am trying to point to my ESXi server through iSCSI.
In the Compellent UI: i've created a volume. It, of course, says the volume is offline until you map it to a server. ...
- 421
0
votes
1
answer
794
views
P2000 G3 for VMware - one vDisk, Multiple RAID levels?
I have a dual controller P2000 G3 (SAS 6GB) hooked up to 3 ESXi hosts.
There are 12x 600GB 15k rpm drives total, and I have set them up in 1 RAID10 vDisk to maximize performance+reliability. The ...
- 105
3
votes
4
answers
3k
views
iSCSI SAN for vCenter Cluster
I'm looking to setup a SAN for a VMWare vCenter cluster of ESX hosts. I'd like it to be the primary storage device for VMs. There will be up to 10 hosts in the cluster eventually.
I'm creating a ...
- 407
2
votes
1
answer
1k
views
Benefits of SR-IOV when most communications are between guest VMs
I am about to buy a new server to run VWware ESXi (Dell T320 w/25GB + RAID10). It will mainly be running a Linux host running web applications and a Windows file/database server. I plan to use AWS ...
- 215
0
votes
1
answer
7k
views
What does this mean: "SATP VMW_SATP_LOCAL does not support device configuration"?
Can anyone tell me what this means in ESXi 5.1?:
SATP VMW_SATP_LOCAL does not support device configuration
I've googled it and I get a lot of results, but as yet all the pages that contain the ...
- 2,752
6
votes
2
answers
1k
views
links between switches for iSCSI
We inherited a SAN/vmWare/iSCSI setup with both Dell and HP equipment purchased for it, but not fully setup, and we need to get some additional switches to make it all work. But we're getting ...
3
votes
1
answer
3k
views
How do physical disks passed through ESXi perform vs. passing through HBAs?
Context:
I have a SAN operating system (Nexenta) that runs on ESXi. It has a couple of HBAs passed through to it already, via VT-d. All of the HBAs for the SAN OS are full (no free connectors). I ...
- 841
1
vote
1
answer
2k
views
vSphere 5/Dell MD3000i multipathing configuration clarification
Revisiting an older vSphere setup with two Dell 1950s, 4 NICs per host:
esxi1 and esxi2 for simplicity sake.
SAN is a Dell MD3000i, two controllers, two NICs per controller:
rc00 and rc01; rc10 ...
- 14k
1
vote
1
answer
460
views
virtual san appliance in esxi? why?
I am looking at different SAN solutions (Starwind, Lefthand, OpenFiler, OpenSolaris, etc.) for my small office and I understand that there are many virtual SAN appliance (VSA) solutions which can be ...
- 25
5
votes
1
answer
2k
views
Esxi with iSCSI SAN slows down with many multiple VMs running
I have a server with ESXi 5 and iSCSI attached network storage(4x1Tb Raid-Z on freenas). Those two machines are connected to each other with Gigabit ethernet, and a procurve switch in between.
After ...
- 591
-2
votes
3
answers
248
views
Infrastructure Storage Recommendations: Backing up a SAN with VMs [closed]
We are going to be moving our current physical server infrastructure to a VMware solution with 3 nodes (The Essentials Plus Kit). I need recommendations for storage. From what I've read, an iSCSI SAN ...
- 184
-1
votes
1
answer
233
views
Connecting a Hypervisor to a SAN [closed]
This is a hypothetical scenario for my college project.
I am wondering what way to physically connect a VMWare ESXi 5 server to a SAN server.
In my scenario both computers have gigabit NIC's using ...
- 223
1
vote
2
answers
11k
views
How to check fiber connectivity in ESXi 5.0?
On a VMware ESXi 5.0 host, how can I check if fiber storage adapters are properly connected to the fiber switch/SAN, i.e. if the fiber link is up?
- 70.7k
3
votes
2
answers
699
views
RAID10 volume write latency on Windows on ESXi 5
I have a VMware ESXi 5 environment running on Fujitsu BX922S2 blade servers, connecting to a Fujitsu DX90 SAN.
I've had no problem with RAID5 volumes, but RAID10 volumes (for MSSQL) are exhibiting ...
- 143
2
votes
1
answer
3k
views
Data Store/Volume disconnecting. How to resume copy of VMDK?
I'm having an issue with my ESXi 4.1 hosts losing the datastore with FC SAN after a power outage. All 3 hosts disconnect so it's definitely a SAN issue. I've tried to resolve the issue on the SAN side ...
- 123
10
votes
6
answers
53k
views
VMware VMFS5 and LUN sizing - multiple smaller datastores, or 1 big datastore?
With VMFS5 no longer having the 2TB limit for a VMFS volume, I'm considering which scenario would be more beneficial overall:-
Less LUNs of larger size, or
More LUNs of smaller size.
In my case, I ...
- 15.5k
1
vote
3
answers
774
views
SAN Distro with iSCSI and software RAID 5 [closed]
Im looking for an OS, to install on a server, which has 4x 1Tb disks. Id like to couple those disks as an RAID-5 array, and share it over iSCSI to VMWare ESXi 5. Im not sure if this exists...
I have ...
- 591
1
vote
2
answers
2k
views
Gracefully Shutdown an Equalogic SAN
Like many others I have jumped on the VMware bandwagon. We are hosting all of our data on an Equalogic SAN and need a "gracefull" way to shut down the VMs and the SAN if the battery backups reach a ...
- 605
3
votes
2
answers
2k
views
HP LeftHand vs VMware VSA
I am trying to compare VMware's new VSA with the HP LeftHand VSA. Both products allow you to run the SAN node as a VM. Reading VMware's documentation I get the impression that VMs on the same host ...
- 243
3
votes
2
answers
1k
views
Fiber Channel SAN hooked up to 2 ESXi Hosts
I have a PowerVault with 4 FC modules at 8gb/s. I don't want to jack the SAN into our 10/100/1000 switch because of the max 1gb/s speed.
My question is can I jack both ESXi host's FC into the SAN's ...
- 31