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0answers
19 views

Optimum LUN size for LVM created NFS share

I have access to roughly 80 TB of capacity via a SAN, which I want to set up as as 2 NFS shares: 1 share of 70 TB and 1 share of 10 TB. The 10 TB share will have full backup to tape, whereas the 70 TB ...
1
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0answers
90 views

NPIV Fibre Channel how to make vHBA scsi_hostX persistent after reboot and libvirt

I'm using QLogic 8GB Fibre Channel HBA which has NPIV with CentOS6.5 I created the LUN on the SAN and did the zoning for the virtual WWPN. In CentOS I do the following to create a virtual HBA: echo ...
1
vote
2answers
77 views

No LUN available to extend datastore

I have a HP DL380G5 with ESXi 5.5 and x4 146GB Sata disks in a RAID5 array. I have added one more disk to the server exactly as the other ones and, using SmartStart CD I managed to add the disk to the ...
1
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2answers
66 views

Multiple iSCSI LUNs to one Server

I'm reasonably sure i'm ok to do this, but I would love some confirmation. Simple question, can I have two LUNs from the same SAN attached to the same server? More detail: I have a HP MSA2000 SAN, ...
0
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0answers
31 views

VDI LUN and RAID Group design optimization

I have a shared storage SAN for our VDI environment that was configured in a specific way by a third party and I was wondering what (if any) was the benefit of the design. The SAN is divided into ...
1
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0answers
48 views

Does a dead LUN path cause an increase in I/O times on the remaining LUN path(s)?

We use an EMC SAN appliance. There are 2 'paths' from the cluster to the SAN. Today we experienced that one of the LUN paths was 'dead' (as reported in the windows event logs). Presumably the ...
2
votes
1answer
171 views

High availability using Fibre Channel and iSCSI in vSphere

I'm having a hard time understanding shared storage for high availability in vSphere. I have the following kit: 1 x Mac mini (ESXi 5.5 - part of vSphere) 1 x White box PC (ESXi 5.5 - part of vSphere ...
0
votes
0answers
87 views

Can't see the LUNs: FCoE and VMware inititator using intel CNA X520

I am using two x520 Intel CNA to create VN2VN FCoE connection. ON the target side I have created the FCoE interfaces on my CNA port and I have created LUNs. I am using Linux as a target with kernel ...
1
vote
1answer
2k views

ESXi 5 Add an existing lun to datastore without formatting

We have two hosts running VMWare ESXi 5.1.0. Both are connected to a RAID 5 array via iSCSI. The lun is an existing lun with vm on it but it is not reconized by the hosts after the reboot. it is ...
0
votes
1answer
63 views

Xen cannot see all the LUNs in ISCSI HP StorageWorks MSA2312i Dual Controller Modular Smart Array

I have a HP StorageWorks MSA2312i Dual Controller Modular Smart Array and a second enclosure. I have four vdisks: vd01 (RAID5) (Current Owner A) vd02 (RAID5) (Current Owner B) vd03 (RAID10) ...
0
votes
1answer
135 views

sg_map & lsscsi showing old storage version

I am using SUN storage and recently upgraded/refreshed my ISCSI LUN storage. We have replicated old storage to new storage and attached to our servers. I can see at SUN storage side that storage is ...
0
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0answers
69 views

Spanned datastore - Is there way to find out on which specific LUN(s) resides flat .vmdk file?

vSphere SDK guide tells that: "If any of the LUNs within a VMFS volume fails or becomes unavailable, only virtual machines with data on that LUN are affected. All other virtual machines with virtual ...
1
vote
4answers
808 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 ...
2
votes
1answer
2k 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
2answers
735 views

Expanding iSCSI LUNs (NTFS)

I have a 4TB iSCSI LUN that formated as NTFS in Windows 2008. I've shared this formated volume as a folder over SMB. When the capacity of this volume is not enough, I have to add more iSCSI LUNs, but ...
0
votes
3answers
224 views

How to share a fibre channel filesystem between 2 hosts?

I have 2 hosts in isolated networks (no network access from one to another). There is a storage system accessible over fibre channel from both hosts. Is it possible to have both hosts have a safe ...
0
votes
1answer
58 views

New lun doesnt work well

Actually we have a server with Oracle Linux 5.8 in which we present clones of production LUN and then we open a clone of the database for several querys. The problem begin when we execute this ...
0
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2answers
207 views

Sharing a SAN LUN across 2 clients

I have an ISCSI SAN that we purchased to store images for our cluster (2TB of images). After reading, we probably should have gone with a NAS rather than a SAN, but back to the point. I'm going to ...
-3
votes
1answer
37 views

Delete unwanted file from a LUN [closed]

I have a SAN environment with LUNs used only for saving documents (. doc, jpg, mp3, xls etc.). I would like to know the best way to delete from these LUN to temporary file word, file thumb, ~ tmp, ...
1
vote
1answer
318 views

Clariion CX300: Removing system disks from a RAID group?

I have a raid group that includes every disk my DPE2. I want to remove the system disks (0-4) from this RAID group. From what I read I should i put them in their own RAID group and avoid storing ...
2
votes
2answers
2k views

iSCSI: LUNs per target?

My question relates specifically to ZFS/COMSTAR but I assume is generally applicable to any iSCSI system: Should one prefer to create a target for every LUN that you want to expose? Or is it good ...
0
votes
1answer
303 views

LUN storage disk in 2 servers, can't see the files

I have one LUN disk connected over FC with linux server ( with centos) and esxi server with VM in Centos. (Two machines work in different LAN's.) In both machines i see this disk. In VM i created the ...
2
votes
1answer
437 views

SAN: is it better to have separate LUNs for operating system and data of virtual machines? [closed]

We have an iSCSI SAN that will be used as backing store for virtual machines. We use Xen and will directly present the LUNs as block devices of VMs (so there is no file system with files on it for ...
2
votes
2answers
1k views

How do you remove attached FC LUNS from CentOS 6?

We have a Qlogic QLE2560 HBA running on a Centos 6 server. I am needing to remove the attached LUNS remotely. I do not have any software from qlogic installed on the device. Their are 2 LUNS ...
1
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0answers
181 views

Presented LUN displaying 3 disks after fdisk -l

All, I appreciate in advance any useful responses to the following: One (1) 800GB LUN from external SAN was presented to 4 RHL servers (2.6.9-78.0.8 x86_64) Initial < fdisk -l > before reboot ...
0
votes
1answer
221 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 ...
1
vote
2answers
218 views

LUN device file names mixed

The following listings are from a Linux RHEL box. I'm a bit confused over the following inconsistencies. Here we have aliases defined for each LUN in multipath bindings file: mpath0 ...
4
votes
1answer
2k 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 ...
1
vote
0answers
311 views

LUNs disappear after rebooting the ESX/ESXi host

A single LUN among from a group disappeared following the ESXI host restart. Neither the host nor the Vcenter can see it. I have four virtual machines on the LUN hiden now showing just unknown from ...
1
vote
2answers
217 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
606 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 ...
1
vote
1answer
316 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
150 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 - ...
2
votes
1answer
6k 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
273 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
442 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
210 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 ...
1
vote
1answer
428 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
558 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
2answers
12k 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
3answers
529 views

Dell MD3200i config query

Just a short query: I have a Dell Md3200i setup to serve LUNs to my 2 physical hosts and I'm running vSphere/ESXi v5 with a number of VM's. Is it normal behavior for ALL VM's and LUN's to run off the ...
2
votes
4answers
503 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 ...
1
vote
1answer
99 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
3answers
15k 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 ...
0
votes
1answer
410 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 ...
0
votes
1answer
111 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 ...
26
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7answers
7k 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 ...
0
votes
3answers
187 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
3k 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
312 views

What is the difference between LUN and array ? Arent they same?

Please clarify what do we mean by LUN and Array ? and if they are similar in meaning?. The confusion is because both are presented to specific servers by the combination of different Hard disks or ...