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Questions tagged [lun]

88 questions
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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 share will have no backup. Using LVM I will set…
Vince
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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 multipath LUN was down to a single path. At this time…
tresstylez
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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 visible in vSphere Client in Configuration > Storage >…
baaron
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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 need two servers to share a single LUN on the SAN…
Brian Lovett
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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 configure arrays etc, however regardless of the…
Matthew Savage
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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 user data on them if possible. Will destroying this…
red888
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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 indicated no disk with < doesn't contain a valid…
EdLee
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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 36006016071602e0026025fa3eff2e111 mpath1…
XO01
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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 VCenter. Although strange I see the LUN …
mariolos
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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. Right now we have one VMFS 3.46 datastore that…
Sven
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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 like to expand the 1.27TB partition, but I don't see…
Jake A
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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: http://wesunsolve.net/bugid/id/6803721 The same bug is also here,…
user75058
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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 client on our VM. Is it possible?
Saariko
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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 CDROM 1.00 /dev/sr0 [2:0:0:0] disk AMI …
sdot257
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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 created folders so my users can access and…
Saariko
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