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Questions tagged [san]

25 questions
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1 answer

Multipath Duplicate Drives

I am setting up multipaths for Veritas backup on SAN storage. I noticed that lsblk shows duplicate disks, which is quite confusing. For example, both sdc and sdd represent the same disk, and similarly, sde and sdf represent the same device. sdc …
Zaheer Ahmad Khan
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SCSI: SAN or local disk?

I have a Debian 9 running. It has a SSD connected as well as a fibrechannel link to a SAN storage. As far I see both are visible as /dev/sdX devices. How can I find out what is the disk and what is the storage? Where is the storage configured in the…
chris01
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How come I, as a normal user, am able to change ownership of a file?

I have a partition that's NFS-mounted from a Netapp SAN. I can create files in that partition, and I can chown those files to another user, any user, even root. How am I able to do so? I thought the kernel would prevent such a thing. I have done…
Mike S
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Viewing Port Info FC Solaris 11

I have a hba card with two ports (port 0) and (port 1) and I want to know how can obtaining using OS the info to mapping the wwn that I can see using fcinfo hba-port command to a port of the hba card. For example: If I have a WWN ending on xxxx890B,…
vicdeveloper
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PVS output not showing drive

I had created physical volume earlier i.e. /backup, /ndasdb, /processor, /latro. Don't know what exactly happened, but /ndasdb is not showing in any of this output result: Pvdisplay, Vgdisplay, and lvdisplay. rest 3 are showing. I can see the…
Himanshu Dua
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List HBA information on Solaris 11 OS

Actually I want to know how can I see the Luns presented using a HBA WWN. The view that I want is something like this: LUN (on the server side like /dev/rdsk/...) | WWN (from the server) | Paths (the paths that connect my hba wwn from the server to…
vicdeveloper
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Multipath -- Ignoring internal disks

I want to configure multipath such that it ignores all the internal disks and only sees SAN Luns. Any idea how can I achieve that? Basically I want to filter out all the internal disks like IDE, SAS backend etc except for SAN Luns. -- Using…
technewbie
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How to move LVM to new server

The current setup of my server, I have a storage disk array (RAID60) which hold 110TB of data. All the data is stored in multiple volumes created by LVM. Now, I want to upgrade my server with Cent OS 5.8 to Cent OS 7. I am worried about any failure…
vishnupanati
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Does a file system also use block storage?

I'm confused about the actual internal workings of a file system. The question is about file storage vs block storage. From what I understand, the difference is in the level at which we access data: File storage at a file level and block storage at…
Aravind
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Is it possible to mount an ATA over Ethernet (AOE) block device on multiple clients, if so how?

I have a lab consisting of 3 machines connected with 2 10gbe links on 2 segregated networks. Each device has 100tb in block storage connected to it. I want to use ATA over Ethernet to create a storage cluster which can be accessed from all the…
Tim
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What does "no device" mean when running iostat -En

We presume to have a faulty cable that connects the SAN to a direct I/O LDOM. This is a snippet of the error when running iostat -En c5t60060E8007C50E000030C50E00001067d0 Soft Errors: 0 Hard Errors: 696633 Transport Errors: 704386 Vendor: HITACHI…
hovey
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How is reliability achieved with SCSI and SAN?

I am pretty new to SCSI and actually not even sure if this is the correct forum to ask. (I did because I found some SCSI questions :) So please feel free to improve/migrate this question. I am playing with Fibre Channel transmission, and read in an…
wlnirvana
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procedure with multipath and lvm - migrating to new storage array

I have an older redhat (5) server that needs to have 9 array filesystems moved to a new array. I'm seeking some assistance on the best way of doing this and how the process works. The data is being copied directly as an array level copy. I have been…
r.l.
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Is it possible to find amount of data that come and go through HBA ports?

I have a ProLiant server with a HBA card (2 ports). $ ls /sys/class/fc_host host2 host3 and also I have a 20T SAN storage that is connected to San switch via those ports. Is it possible to monitor my HBA ports and find the amount of data that…
BlackCrystal
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How to get host "client" initiator wwn's from FC SAN card & switch

I saw an IBM San Storage and at Host alias creation page they can show you available host (client) initiators wwn's to choose. And I wonder how they can find client initiator wwn's from storage? I think they should be using a discover method for…
Morphinz
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