A SAN is a Storage Area Network, for providing block-level access to storage subsystems across a network.

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xen 6.2: is there a maximum shared storage size?

Am attempting to grow the volume size on shared storage from 2Tb to 3Tb. Have resized the volume but am not seeing any change when I ssh to the pool master and attempt to detect the change(s). Am ...
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0answers
7 views

Xen: resizing underlying iSCSI SAN volume

I have a SAN volume that provides the storage for 3 machines running Xen 6.2. The volume is down to about 10% free but there is more available unallocated. The SAN (Equallogic) supports volume ...
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1answer
18 views

SAN Synchronous Replication and SQL Server - Is RPO of 0 possible?

I am working on a solution that is using SQL Server 2012 SP2, but without the use of AlwaysOn availability groups. This is due to cross-database transactions, that does not work for this scenario. ...
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0answers
61 views

How to write batch script for App server which will make output a file on to SAN

We have a batch Script with the name “boo.bat” which is trigger by the MainFrame Job say name “M” The batch script is written below which checks if Mainframe system is able to connect our App server ...
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41 views

How to create output File on the remote SAN High Availability file Server from a windows server [closed]

We have a batch script which is executed by a mainframe job and writes lof file at the same location the batch is located. Now we have to change the batch file location from a nor mal windows server ...
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1answer
40 views

How to give computer account access to EMC VNX CIFS share?

I have a web application that runs using the NETWORK SERVICE account and which has a Virtual Directory to a shared folder (containing images) on an EMC VNX NAS/SAN Unified Storage file server. I ...
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2answers
113 views

Array free space requirement

The general rule of thumb is don't use more than 80-85% of your capacity, otherwise performance degrades sharply, and other bad stuff may happen. On a 8TB array, this comes out to around 1.6TB of ...
2
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1answer
28 views

HP P2000 MSA G3 SAN-SNMP Trap Setup

I'm trying to setup an SNMP trap for an HP P2000 G3 MSA SAN to report on the overall disk performance parameters (mostly I/O rates). We have a server monitor suite running which can use SNMP traps to ...
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1answer
29 views

Why can't I use Services or alike as my subdomain name with SSL?

We have purchased 2 SSL UCC certificates from GoDaddy a few months ago for something like myandy.com and myandy.com.au, and I had defined the following Subject Alternative Names: gateway services ...
2
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1answer
26 views

How to Resolve Hyper-V Disk Location to Drive Letter

When viewing cluster disk properties in Failover Manager or the physical path to VHD's in the settings of a VM in Hyper-V Manager the location is displayed by GUID. Is there a quick way find out ...
5
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1answer
51 views

Send interactive zoning commands to Brocade switch

I have a Brocade FC switch that I'd like to do some zoning on. I have a build file with too many lines to copy-paste into a normal interactive session, and I have ssh set up with pre-shared keys ...
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1answer
35 views

IBM V7000 firmware upgrade effect on mounted LUN

We've IBM storwize V7000 Storage where the firmware is going to be upgraded to latest version.. This will require a reboot to the storage. I've got arround 10 LUN's (almost 10TB) coming from this ...
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1answer
133 views

Dell PowerEdge R710 direct-attached to HP MSA 2040 SAN [closed]

I have no idea about Direct attached storage; I do not know that it is possible to do. I plan to use HP MSA 2040 storage to direct attached with my dell Power Edge R710 via Fiber Channel. What do i ...
2
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0answers
44 views

NetApp filer uses more amps when one power supply is turned off

We have two old NetApp FAS3050 filers at our colo. We also have an upcoming maintenance window that will take our circuits offline for an extended period of time. Our circuits are pretty much maxed ...
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2answers
131 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 ...
2
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1answer
168 views

How to configure multiple iSCSI Portal Groups on a EqualLogic PS6100?

I am working on a migration from a VMware vSphere environment to a Hyper-V Cluster utilizing Windows Server 2012 R2. The setup is pretty small, an EqualLogic PS6100e and two Dell PowerConnect 5424 ...
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3answers
97 views

Strangeness during Windows Server Install (drive duplication) [SAN]

I have recently taken over as an administrator for an IBM chassis and associated blades, along with accompanying IBM SAN. One of the blades is running VMWare ESXi 5, and we don't need it anymore, so ...
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1answer
53 views

San lun wwid number 3 in front

I have a san lun in a linux server, using this following command i saw this scsi_id -g -u -s /block/sda 38001438005dea3760000700002660000 #3 number in front of wwid sg_inq -p 0x83 /dev/sda | ...
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1answer
50 views

Is it possible to use planet scale load-balanced virtulisation? [closed]

there are more and more implementations of distributed-virtualisation. A common one is Microsoft SCVMM. Currently, such things are kept inside LANs, and a san or fiber-channel system is used for ...
2
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1answer
27 views

MSA2312i shows duplicate enclosures?

I just installed a redundant controller in my MSA70. This is in use with our old MSA2312i SAN. Now I'm seeing two entries for 'Enclosure 3' (the associated MSA70 disk shelf) in the UI. It appears ...
2
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1answer
130 views

Beowulf cluster storage setup [closed]

I'm a Computer Engineering student working on a project with a Verari blade cluster, a bit outdated for today standards. I had acquired some Unix experience but I'm not an expert at all. This Verari ...
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1answer
120 views

Can someone explain the important differences between fabric, point to point, and loop on a fibre san?

I have a fully redundant HP 8/20q FC SAN that has been working well, but as I dig deeper into things looking for more performance, I'm quickly at the end of my knowledge when it comes to FC ...
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3answers
114 views

Linux: Get information/stats about storage network

I want to know as much info as possible about the SAN a linux server is connected to. What commands will give me the most comprehensive view? Simply knowing the WWN of LUNS doesn't do much for me. ...
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0answers
50 views

How is that possible that file was changed without date modification? [closed]

I'm using Blade Server with CentOS 6.5 (ext4) installed, disks combined in raid6, connected in a storage area network. Somehow some of my files become corrupted from time to time without updating the ...
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6answers
227 views

SAN zoning advantages and disadvantages

We just got a SAN, and I will be assisting in installing it and configuring it, I asked someone to explain to me what we will gain using SAN zoning, but he was unable to answer my question, could some ...
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1answer
38 views

Re-purpose DD660 (DataDomain) for VM Storage

We have an un-used DD660 (DataDomain) and an un-used x3650 M2 that we are wanting to use as a test bed for playing with Hyper-V as we look into it vs. VMware. Has anyone used a DD660 is simply ...
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4answers
102 views

Is there a way to read SMART attributes for drives in a SAN?

We are running an SSD array in a SAN, and the performance is great. But we need to monitor the write endurance SMART attributes so that we can determine when the drives are close to wearing out. We ...
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0answers
66 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 ...
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1answer
39 views

Add node to HP StoreVirtual Management Group

I believe that what I am trying to do is simple: How to add a node to an HP StoreVirtual Management group (and cluster)? Basically we got newer VM hosts, and we want to move the nodes to those ...
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1answer
102 views

how to determine the iscsi target's naa in linux

I understand that iSCSI uses iqn / eui to identify target LUN. Once I have discovered the iSCSI target and logged in is there a way to determine the LUN's NAA id for the remote target from a linux ...
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37 views

How much throughput increase to expect from link aggregation (LACP/802.3ad)?

I identified that data transfer within my cluster will be bottlenecked by the network interconnect (I'm saturating the dual SAS connection to my storage with sequential workloads), and I'm undecided ...
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3answers
227 views

Brocade mirror ports

I'm getting a bunch of brand new condor 3 based switches and these things have a feature I'd like to use called port mirroring. Essentially, a mirror port can be configured to show all traffic being ...
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43 views

Mapping LUNs to drive slots on a MSA2312i?

I'm working with an older MSA2312i. I really need map the current LUN configuration to associated slots via the SSH so I can make it scriptable. Is there a ready way to do so? I would have thought a ...
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2answers
74 views

associating HP MSA2000 G3 to a virtual machine on windows server 2012 DC

Basically i wanted to have a Debian Squeeze associated to the SAN HP MSA200 G3 but due to lack of support i have now planned to deploy Windows Server 2012 Data-center on 2xHP Proliant DL380p G7 ...
4
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3answers
183 views

Should I worry about Split I/O in a SAN?

We have a NetApp Storage system presenting LUNs to a few Hyper-V clusters. When running a system performance trace (in perfmon) on a 2008 R2 there's a warning about a "high level of Split I/O". ...
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19 views

How to configure HP MSA20000 G3 on a HP Proliant DL380p G7 Server on debian squeeze

I have configured a HP MSA2000 G3 attached over fiber channel to HP DL380 G7 servers and have configured it initially over Microsoft Server 2012 Standard edition and have set the identifiers and ...
2
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1answer
84 views

What effect does HBA queue depth and max transfer size have on transmission overhead?

This is a pretty straightforward question. What, if any, relationship do queue depth and max transfer size a QLogic HBA have on management overhead on a transmission? What I'm hoping to learn how (if ...
2
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1answer
46 views

Windows 2012 BCD process to boot from replicated LUN for Boot from SAN

For our infrastructure we have a production site and a disaster site with SAN-based replication for the LUNs on the Windows servers. So for our proof of concept we have one server on the production ...
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108 views

zfs recovery after hardware failure

My ZFS storage hardware failed including the rpool disks. I installed a new server and tried to import use zfs import -f poolname. I am able to see the pool and the disk utilized. But I am not able to ...
2
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2answers
1k views

How to check the current queue depth value?

I have an OEL server connected via fibre to a NetApp SAN. How can I view the queue depth as the OS sees it? Output from lspci: 05:00.0 Fibre Channel: QLogic Corp. ISP2532-based 8Gb Fibre Channel ...
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255 views

Detect Fibre Attached Tape Drive in Red Hat Linux

I am running Red Hat Linux 6.4 and I have one Fibre Attached Tape Drive which is not visible to the OS. I also have the WWPN of the tape drive. The server has two Qlogic HBA Card with two port each. ...
2
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1answer
39 views

Scalability in a High Availability Environment - SQL Failover Cluster 2012

I have created an environment where 1 SAN is connected with 2 Nodes (part of SQL Server 2012 Failover Cluster) of SQL Server. Windows Server 2008 R2 is used, and single DB is stored in SAN. We have ...
2
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1answer
141 views

Best method to share ISCSI lun across cluster of app servers

I'm in the process of migrating our cluster to new hardware. We use bare metal servers, no virtualization. Currently, we have around 30 "application" servers. When we make an update, we push the ...
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2answers
83 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 ...
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1answer
37 views

Veritas and VNX LUN Expansion

I have an EMC VNX Storage array and a front end Linux server running Veritas. A 4TB lun has been assigned from a diskpool on the VNX and presented to the server where Veritas has split it out into ...
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1answer
96 views

IQN Naming convention

I've seen a lot of information about how IQN's should be formatted, but there's not a lot of information on how to build them. I'm kind of a newb when it comes to iSCSI, and i have it working, but I'm ...
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1answer
89 views

Building a SAN on 2012R2 “Storage Spaces” - More Cores, or Faster Single Thread?

I am considering building a SAN unit on Server 2012R2 using Storage Space. In that situation is it more helpful to have more CPU cores, or less faster cores?
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1answer
161 views

XenServer Linux guest booting off iSCSI SAN (ZFS storage): Will a non-checksumming guest file system still be at risk?

We are storing files on FreeNAS 9.2 using ZFS. I love the data integrity claims made by ZFS, having randomly lost data in the past on servers using ext3, XFS, and ReiserFS that were not mistreated ...
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2answers
136 views

qle2462 target mode on redhat 6

i have a solaris server with 40tb of data on it that i need to get moved to another linux server. i bought 2 qlogic fiber cards both are qle2462 and put one in the solaris box and the other in the ...
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65 views

Intransa Server Failure/Software

Our agency has an IntransaBrand VideoAppliance storage server. It is currently running a Windows Vista client on server equipment and has 2 RAID arrays. One is a RAID 5 (4 x 2TB Western Digital ...