The lun tag has no wiki summary.
3
votes
1answer
344 views
Considerations for spanned volumes with SAN's LUN.
I want to know, before going forward, what I can expected in lost of performance (or not) of creating Windows spanned volumes from LUN delivered by a SAN ?
I don't know which kind of SAN is (we don't ...
0
votes
0answers
128 views
Shrink EMC VNx Protection Size - Pool filling up
We have a storage pool that is filling up - and currently 20% of that pool is allocated to Data Protection.
Can we reduce, or even temporarily eliminate the Data Protection space?
It seems that even ...
1
vote
2answers
143 views
Adding storage to ESXi host
We have two hosts running VMWare ESXi 4.1. Both are connected to a RAID 5 array via iSCSI. We added three more disks to the RAID array. Now I need to assign the new storage somehow to the ESXi hosts. ...
2
votes
3answers
231 views
Exchange 2010 VMDK disk design
I am deploying Exchange 2010 on a single server on my VMware/SAN. We have about 100 mailboxes. I will be using normal VMDK disks, so my question is about the disk design. Should I put everything on ...
0
votes
1answer
92 views
How to rebuild my NAS
Today I have a QNAP TS-859U+ with 8 X 2TB disks in it.
As it's was setup on day-1 it uses a single volume on a raid 5.
The volume has currently a mixture of:
2 shared folders
5 iScsi Targets - ...
0
votes
0answers
130 views
Celerra Storage Processor pathing issues
Ok so some retard at my work thought he was going to fix a messed up SP and reassigned all of the default SP on all the luns to SPA, then he did a hard reboot (Smart I know -.-). Anyways, now I have ...
2
votes
1answer
433 views
Cannot extend existing data disk over 2TB on windows 2008 with dynamic and gpt part
As my D: disk is almost full (2TB) I extended the FC lun to 2.5TB.
The new 500Go are seen by windows as "Unalloacted" as expected.
I tried to extend the volume but windows says
There is not enough ...
0
votes
1answer
127 views
IBM DS300 SAN, Need to expand partitions on LUN
I have a IBM DS300 SAN, and I have setup one LUN with 2.7 TB. I have this LUN setup with 2 partitions, one 130GB partition, and one 1.27TB partition. I have an additional 1.3TB free space. I would ...
3
votes
2answers
303 views
LUN and VMFS 5 sizing assistance
I am working on setting up our vSphere 5 environment. With vSphere 5 you can go > the 2TB VMFS datastore size that you were capped at with in 4.x, etc. What size datastores are people using and ...
1
vote
1answer
201 views
Solaris: Clone/Recreate iSCSI target not backed by a ZFS Volume
Is it possible to re-create or clone an existing iSCSI target not backed by a ZFS volume? I ask because upon rebooting a X4500 Thumper, I was affected by this bug: ...
1
vote
1answer
151 views
Can I move a LUN from one phsical server to VM client?
I have a 500GB LUN created over our QNAP, and it's connected/binded to one server 2K3. It is identified on that server as disk E (Dynamic)
I want to remove it from Server A, and connect it to a ...
1
vote
1answer
100 views
Can I re-assign the scsi letter for virtual floppy?
Having issues with oracle starting up in our cluster environment due to disks not lining up properly. For example, on the problematic host, I see the following.
[1:0:0:0] cd/dvd AMI Virtual ...
2
votes
4answers
307 views
Drobo Thin Provisioning: What happens when you run out of space?
I'm thinking about getting a Drobo S to add some storage on a Windows Server 2008 R2 box. The Drobo offers thin provisioning.
While I will only have 4.5TB of space initially, I'd like to use thin ...
0
votes
1answer
178 views
How to delete a file in a LUN that gives an error?
I have a 1.5GB LUN, on a QNAP NAS.
The LUN is attached to a W2K3, and has some folders shared on it.
On one sub-folder there is a specific file, that is corrupted. I need to delete it, but I can't ...
1
vote
1answer
89 views
Why am I losing share access to my LUNS?
Question Rephrased:
On our NAS, I have 3 LUNS created (I do not know if this is the cause of the problem).
On my DC, I have attached them using iScsi, and have created them as a disk. On that Disk I ...
0
votes
1answer
72 views
Do I require a clustered file system to share a LUN via VMWare?
I want to avoid this:
How can I use NTFS and iSCSI and not corrupt my SAN?
On possbility I may have is to share out a LUN from my SAN and have other machines access that shared drive. In other ...
0
votes
3answers
149 views
Use Hyper-V guest os as san for vm:s
I'm looking into setting up a virtualization server at home. I have settled on hyper-v since I want to try remotefx.
What I'm contemplating is if it's possible to run freenas as a guest. Passthrough ...
1
vote
1answer
2k views
ESXi 4.1: how to make use of an iSCSI LUN bigger than 2 TB?
I have a ESXi servers (4.1 U1) connected to an iSCSI NAS, where 4 LUNS have been defined and presented to this host; all the LUNs are 3 TB in size. ESXi correctly sees the LUNs and acknowledges their ...
2
votes
1answer
853 views
Is it possible to query the LUN ID of a list of windows server?
I'm trying a combination of FCINFO and PSEXEC to get the LUN ID (LUN NUMBER) used by servers, but i cant get this information directly from fcinfo.
I've also try using WMI until i learned that i ...
0
votes
1answer
1k views
Mapping VDIs directly to software iSCSI LUNs in XenServer
I read in the XenServer Administrator's Guide in section 4.1.6.2 that you can map raw LUNs to VDIs if you're using a NetApp or EqualLogic SAN. Is it possible to do the same with Software iSCSI SANs ...
0
votes
1answer
176 views
Read LUN from dell SAN with a PC on linux
We are currently using a md3000i DELL SAN server with a RAID1.
I would like to access the information on one disk from a workstation.
The hard disk contains 2 LUN but I can only access the first ...
0
votes
1answer
102 views
LUNs and snapshot pool size
Typical mail server, let's say 20GB of mails, partition size 100GB. I'm transferring to a LUN on shared storage P2000 and designing the whole thing. What it is typical snapshot size in this situation ...
6
votes
5answers
638 views
LUNs and virtual machines
I have HP P2000 + XenServer solution working. What I'm thinking about is how to create LUNs for 20 virtual machines. Separate LUN for every VM ? It gives me ability to backup the specific virtual ...
0
votes
2answers
5k views
The Linux SCSI layer does not automatically remap LUN assignments
I've got some iSCSI/FC storage, currently using only iSCSI.
I have in general no problems with mounting LUNs - under Linux and under Windows.
Unfortunately - when I add LUN for my Linux iSCSI ...
0
votes
2answers
627 views
What is the filesystem used to mount a LUN disk?
How do you mount a fresh LUN disk to your / ?
Do you use ext3 or NFS for this ?
1
vote
2answers
391 views
Migrating the SAN lun in Linux
How to perform LUN migration in Linux (using LVM and native multipath) from one storage device to another storage device
0
votes
1answer
163 views
As a small business about to overhaul infrastructure and go virtual, how can we take advantage of all the features of the QNAP TS-439 Pro II+?
Specifically, how can we benefit from these current list of features? We're very new to this and I want to be able to talk intelligently to our IT consultant.
VMware Ready
Citrix Ready
Built-in iSCSI ...
0
votes
1answer
292 views
How to use more than 10 block level iSCSI volumes on Synology DSM 2.3 for ESXi
We have a Synology NAS RS810RP+ running DSM 2.3-1161 and there are several block level iSCSI devices configured. Each of the devices is used as iSCSI harddrive for a different ESXi VM.
(Every VM has ...
1
vote
1answer
358 views
In Debian (>= 5.0 lenny) how to set scsi_mod's max_luns option?
The scsi_mod has this option max_luns which is the "last scsi LUN". How can I view the current setting and change it?
0
votes
2answers
2k views
File Server - One large LUN or multiple smaller LUNs?
We're about to replace a bunch of kit (servers, SAN etc.) and migrate our servers across from their current platform.
Our file server has around 8tb of data on it right now, spread across 5 LUNs (all ...
0
votes
4answers
507 views
Virtual system drive is split between separate LUNs
My hardware VMWare guy told me that a Win2008R2 server I have has a D drive that is split between two separate LUNs. He could not tell me if that's a good thing or bad just that it's not standard ...
1
vote
3answers
363 views
Do I have to have LUN on a iSCSI Target?
I am using Linux, and was wondering, if I could put LVM directly on a iSCSI target without a LUN?
0
votes
1answer
528 views
LVM issues when adding a newly-carved LUN from a Clariion - pvcreate fails
This seems to be a semi-common issue asked, but I have not yet found a good solution.
I try the following:
[root@localhost ~]# pvcreate /dev/sdc
Can't open /dev/sdc exclusively. Mounted filesystem?
...
1
vote
1answer
237 views
iSCSI LUNs on different VLANs
Is there any way to share different iSCSI LUNs on one iSCSI server on specific VLANs? IE lun1 would only be accessible via devices on eth0.3 and lun2 by devices on eth0.4.
I'm using iSCSI Enterprise ...
0
votes
1answer
215 views
Are there any good utilities out there to create datastore / LUN diagrams for VMware ESX 3.5?
We are working to get a large (inherited) VMware ESX 3.5 environment with multiple SANs under control. We first need to create a diagram / Excel spreadsheet / whatever that explains what VM is stored ...
2
votes
1answer
607 views
What is better to have more LUNs or more Storages
what is better to have - more LUNs or more Storages.
Actually i have 1 storage ESXi per 1 LUN so there are about 15 LUNs and 15 storages.
Now there is a kind of problem because the LUNs have different ...
0
votes
1answer
383 views
what is esx max volume size?
had trouble making esxi4 see datastore of size 2TB. It is said this is max for a LUN only and could be bypassed by extents?
how to do that?
0
votes
1answer
1k views
P2v options within a hyper-v environment
I have a server that san boots that I want to p2v. I have many options disk2vhd, scvmm etc but I was thinking about cloning the lun (flexclone, netapp) presenting it to my hyper-v r2 server. Within ...
0
votes
1answer
598 views
Getting Partial / No Redundancy on VM's created on latest datastore
First some background.
I'm in the process of upgrading my ESX servers from 3.5 to vSphere 4 and so far I have setup the new vCenter Server. Before I start the upgrade of the ESX, I needed more ...
0
votes
3answers
420 views
iSCSI SAN Availibility before VSphere install
We are a small business with about 30 users but thrive new technologies. I have been planning a brand new VMWare install for months now. I have a, hopefully, simple question for anyone.
potentially ...
0
votes
2answers
3k views
Identify LUNs on Redhat server
I inherited an environment where there was no LUN masking or proper zoning. With that said, I need to identify the correct LUNs that are presented to a particular server. I see 6 LUNs if I run "fdisk ...
1
vote
1answer
3k views
Assign and remove multiple LUNs from VMs on ESXi 4
We currently have a test environment where we create hundreds of LUNs on our SAN-attached storage array, export them to one or more (physical) servers, run tests on the data contained on the LUNs, ...
1
vote
2answers
600 views
Share SCSI DAS enclosure (vtrak m210p) between multiple servers?
I've got a Promise vTrak m210p subsystem. It supports LUN mapping & masking, and has two SCSI channels (2 VHDCI ins & 2 outs on rear of device). I believe this question will probably apply ...
0
votes
5answers
12k views
Attach local disk to a VM in VMware ESXi
I'm sorry if this has been asked before.
We are planning to attach a local SAS disk to a VM, so the VM can access the disk directly. We're using VMware ESXi 4.
I have heard that this can be done ...
1
vote
2answers
835 views
Presenting Apple XServe RAID LUNs to XSan
I am working on a Final Cut Server setup with an associate and one of the things we need to do is setup XSan2 with two Apple XServe RAID units.
I am able to get into the RAID Administrator and ...
7
votes
4answers
10k views
What is the difference between LVM and LUN
Both seem to be a virtualization layer on top of physical disks. I'm having a hard-time understanding each of them and the difference between them.
3
votes
3answers
3k views
What are your recommendations/best-practices for vDisk/datastore/LUN management with VMWare ESX
Obviously there's an infinite variety of ways of carving up your raw SAN LUNs to provide VM boot and data vDisks - but what methods do you use, what are their pros/cons, and are there any good ...
22
votes
7answers
6k views
SQL Server disk design on an ISCSI SAN
Its standard practice to separate log and data files to separate disks away from the OS
(tempdb, backups and swap file also)
Does this logic still make sense when your drives are all SAN based and ...
