A SAN is a Storage Area Network, for providing block-level access to storage subsystems across a network.
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46 views
How do I learn network storage? [closed]
I've discovered in my networking studies that Cisco gear is common and that same category devices from other manufacturers (eg. HP Networking or TP Link) have similar configuration style.
My goal is ...
1
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2answers
55 views
Any good apps to visualize what's happening on an iSCSI Storage network
I'm a developer/SQL type person that has inherited an iSCSI SAN/Vmware setup in the past year. HP Lefthand P4500 SAN. Single iSCSI switch - HP Procurve 2810. Dell Equallogic PS6010E 10gb SAN (not used ...
1
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2answers
35 views
2 node 2008R2 cluster service won't start when just one node is booted
I'm a new to MSCS and I'm trying to understand something that recently happened.
We have a 2 node 2008 R2 cluster using a witness disk (node and disk majority) over iSCSI SAN.
I've read over some ...
3
votes
1answer
32 views
Is it possible to connect a FC HBA 8 Gb through 10 Gb Ethernet SFP+?
I have to connect an IBM Server with a QLogic EP2532 to an IBM DS3512 with a PMC PM8032. I need two 8 Gb FC LX 1310 nm SFP+ modules and since they seem to be hard to get, I thought would it be ...
1
vote
1answer
38 views
Does the Dell Equallogic PS5000E accept SDD drives?
I have an EQL PS5000E which with a recently expired support contract. I am running firmware 6.0.2 and given that this is an old array I don't plan to renew support. My VAR says that the PS5000E can ...
1
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0answers
34 views
Running SpinRite on SAN attached LUN with NTFS corruption
Got a customer that has an issue with NTFS corruption that is popping up on SAN attached storage. The LUN is RAID-10 (4:1 spindle ratio). The machines are Windows Server 2003 (64-bit), and they are ...
1
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1answer
43 views
Machine in read-only mode, do I really need to restart?
In a combination of SAN controller failover and loss of power, several of our machines ended up in read-only mode. After restoring from the failover, I restarted all machines. This got me thinking if ...
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0answers
44 views
P2000 G3 for VMware - one vDisk, Multiple RAID levels?
I have a dual controller P2000 G3 (SAS 6GB) hooked up to 3 ESXi hosts.
There are 12x 600GB 15k rpm drives total, and I have set them up in 1 RAID10 vDisk to maximize performance+reliability. The ...
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0answers
38 views
apache2: UCC / SAN-certificate, vhosts and SSLVerifyClient
I'm trying to build an apache2-setup using an UCC / SAN certificate containing multiple subdomains. Each subdomain has its own vhost. Only the first vhost contains the ssl-config, the following hosts ...
1
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1answer
34 views
Network issues regarding p4300 SAN - cannot manage p4300 through CMC
I am having an issue with my p4300 LeftHand SAN. It is a 2 node iSCSI system. Each one has 2 nics which are teamed into a cisco switch. The VMware cluster is connected into this switch as well with ...
2
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1answer
37 views
NetApp FAS2240 configuration choice
If we are purchasing an FAS2240 controller with two disk shelves of SAS disks, would we have better performance purchasing two (2) separate controllers and load balancing between them?
1
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2answers
60 views
Equallogic partitioning: pools, allocations, etc
I have some new budget coming up to buy an Equallogic PS6110xv. This unit has 24x600G disks and I'm looking at different ways of setting it up.
The two primary uses will be VMs and MySQL.
MySQL: ...
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0answers
34 views
How could I share data from a SAN?
I am considering deploying a SAN but I have found contradictory information.
The thing is that I would like my cluster nodes to be able to read the same data from a unique source (I have a ...
0
votes
3answers
119 views
Is SAN storage better than NFS? [closed]
I have server with RHEL 6 with Apache 2.2.22 and NFS client (nfs-utils-1.2.3),and access NFS server on private network.
My problem When the number of files increases my web site becomes slow and ...
1
vote
0answers
23 views
multipath -l vs -ll
What system information is multipath -ll reading that multipath -l does not?
From the RHEL DM Multipath Guide
-l Display the current multipath configuration gathered from sysfs
and the device ...
0
votes
2answers
51 views
Mounting a mainframe file system on Unix (or vice versa)
We have a data conversion project where the overall process works this way:
Mainframe legacy application will extract out their data into flat text files.
Our application (running on AIX) will FTP ...
5
votes
2answers
120 views
What are the tradeoffs between using hypervisor- vs. storage-array-based snapshots as backup sources?
Suppose you have some virtual machines (running in eg. ESXi) that are stored on an iSCSI storage array (eg. EqualLogic PS4110). Now suppose you want to set up a backup and restore regime that looks ...
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0answers
27 views
Do I need to dedicate a machine to Dell MDSM? [closed]
I'm having trouble determining from the documentation whether or not I need to dedicate a machine to running Dell MDSM to manage our MD3200i. Is it strictly a client that accesses configuration stored ...
0
votes
1answer
154 views
HP P4000 / Lefthand : how to do a manual failover
We have a P4000 SAN with 2 nodes; we don't have a Failover Manager.
Right-clicking a node in the management console does not offer a failover option, the best one seems to be "power off or reboot". ...
-5
votes
1answer
64 views
Contents of virtual disk on SAN appear different on multiple hosts
I have a Dell MD3200i SAN device and a virtual disk configured.
Two Windows host servers connect to this virtual disk via iSCSI.
Changes made to the virtual disk on one host do not immediately ...
0
votes
0answers
26 views
Is it possible to get configuration from hp xp10000? [closed]
Is it possible to get configuration (ports, LUNs, storage groups, CUs, LDEVs etc) from HP XP10000? I intend to handle this config by perl script to generate human-readable reports
I have admin access ...
2
votes
4answers
232 views
iSCSI SAN for vCenter Cluster
I'm looking to setup a SAN for a VMWare vCenter cluster of ESX hosts. I'd like it to be the primary storage device for VMs. There will be up to 10 hosts in the cluster eventually.
I'm creating a ...
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0answers
50 views
Replacing ageing Hitachi SMS 100 SAN [closed]
Summary
Our Hitachi SMS 100 SAN is going to be 5 years old soon, and out of it support / replacement time frame, so we need to replace it. I identified several possible replacement options but I'd ...
0
votes
1answer
99 views
Attach storage drive in a VM via iSCSI initiator or VHDX on the Hyper-V host
Our current 200-user infrastructure is based upon XenServer and a StarWind iSCSI SAN. The C: drives for the virtual server's OS are mounted in XenServer SR volumes which are in turn virtual hard disks ...
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votes
2answers
66 views
SQL data and log files on Equallogic volumes
I've recently begun an exercise in looking into SQL best practices in terms of performance. I've read that it is recommended to put MS SQL data files (mdf) and log files (ldf) on separate volumes.
...
1
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2answers
169 views
How to Shrink a Volume on Equallogic SAN
I extended a disk on a DB server (so we could temporarily restore a database) and I would like to shrink the volume back down now that the data has been deleted.
I deleted the data and shrank the ...
4
votes
1answer
123 views
Is using a NAS with hot swap disks an effective way of cycling backups?
We are looking at improving our backup solution. We don't have a huge amount of data to back up (currently ~500GB) which is backed up nightly onto an external HD. We have 3 of these HD, with one going ...
1
vote
1answer
76 views
Benefits of SR-IOV when most communications are between guest VMs
I am about to buy a new server to run VWware ESXi (Dell T320 w/25GB + RAID10). It will mainly be running a Linux host running web applications and a Windows file/database server. I plan to use AWS ...
-2
votes
2answers
124 views
When is iSCSI Required or Most Useful? [closed]
Background:
I have two SANs (Dell Equallogic PS6100E, though not necessarily an eql. question). I have a NAS that connects to them (FS7600). That NAS is on the regular network lan, but has it's ...
-1
votes
2answers
85 views
Is it ok to run 15k.6 and 15k.5 SAS disks in a SAN together?
I have a SAN (HP MASA 2012) running seagate Cheetah 15k.6 drives. One has failed and I have a replacement drive that is the same except for it is a 15k.5 drive. Is this ok to run in the SAN? What are ...
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0answers
19 views
Which Filesystem and Clustersolution for big Blu-Ray Library? [closed]
i have a big collection of movies and some images from computers and other files like documents. actually i look in an list to find the right box for the blu-ray and lay it in the player. in the ...
0
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0answers
66 views
Is it safe to restart multipathd while volumes are being used
Forgive me if this is a completely idiotic question. Trying to reload an updated multipath.conf configuration to attach a new LUN and I need to restart multipathd. Is this a terrible idea if the ...
0
votes
2answers
73 views
Building a small server setup - need storage and reduncy - NAS or SAN? [closed]
I want to build a small server setup. With 2 load balancers, and at first 2 webservers. I need a setup where both webservers would be able to upload and download files from a common storage solution.
...
-1
votes
1answer
59 views
Fast storage for a server [closed]
I have created a search engine which is implemented in Java. I want to put this program to a server and test it. My program is very dependent to disk I/O and any improvements to disks would directly ...
5
votes
3answers
302 views
Recommendations: configuring a 10GbE NAS stack for virtualisation storage
I'll try as hard as I can to word this so it is not considered a shopping list.
We have been successfully running a dev/test ESXi environment for some time, with a couple of Dell PE2950III servers ...
1
vote
1answer
85 views
New RAID1+0 in P2000 storage
I have P2000 SAS storage with RAID6 configured on 8 disks 1TB 7k2rpm. I want to add RAID1+0 with 4 SAS15K 300GB.
The question is, does this storage support this setup? Should it work without any ...
1
vote
1answer
84 views
Broadcom NIC stays down in iPXE
I'm repurposing some old servers as budget compute farm diskless nodes and am trying to get iPXE to do iSCSI boot on an HP DL145 G3 which has an embedded Broadcom NetXtreme 5715 dual-ported NIC.
...
0
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0answers
53 views
The logical drive has failed and cannot be used
msa1500cd from ADU device error report :
The logical drive has failed and cannot be used. All data on this logical drive has been lost.
Can I save or extract the data? I have a total of4 logical ...
1
vote
0answers
149 views
How to install Ubuntu Server on SAN Storage with Multipath?
I have HP ProLiant BL35p blades and I want to install Ubuntu Server 12.x on them in order to do virtualization with OpenStack.
The storage is made of HP StorageWorks SAN, which is connected to the ...
6
votes
4answers
271 views
What would cause IO Wait on a SAN?
I understand IO wait when I see it on a server, it means that the CPU is blocked while I wait for the IO to catch up [source].
I am trying to understand why a SAN stats would show a high IO wait - ...
0
votes
2answers
51 views
Installing hard disks on a server connected to a SAN
I have a server that is connected to a SAN (Dell Compellent) and due to space concerns I am looking into installing some physical disks into this server to 'offload' some data being used by the server ...
2
votes
0answers
298 views
iSCSI issue; “the media is write protected”
i've got some serious issues with w2k8 r2 standard and iSCSI controller. i'm running dell server, connected via ethernet to synergy NAS, which is handling LUN via iSCSI. i'm using ms iSCSI initiator ...
2
votes
1answer
115 views
How to configure multipath using Intel X520-SR2 10GB on Oracle Linux 6.2?
I've installed the Intel x520-sr2 Ethernet/Fibre card into a server that has Oracle Linux 6.2 Installed on it. When I boot the server I can go into a QLogic menu (screen has something for Intel on ...
1
vote
4answers
474 views
Why use NAS for file access, why not SAN? [duplicate]
Possible Duplicate:
What is the use-case for NAS on a mid-to-high end storage array?
SAN is block level, NAS is file level. Block level means applications access blocks,while in file level ...
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0answers
29 views
Too many volumes in WinEvent logs mesages
I see strange issue here and I'm stack on finding the reason of it. Here is the scenario:
There is the machine with WS2012 that is connecting to the SAN drive (3 node HA storage provided by StarWind ...
-2
votes
2answers
125 views
large iSCSI disk a good idea on an entry-level “unified” NAS?
I am working on implementing a D2D backup solution for ~150 computers based on Crashplan ProE (no cloud storage). For the storage backend, I picked up an Overland Snapserver DX2 head unit and one ...
0
votes
2answers
100 views
iscsi versus non-iscsi san?
We are considering adding a SAN.
I have two choices right now, the Dell MD3000 and the Dell MD3000i, 15 x 146Gb san drives.
Naturally the latest model is more expensive (2x as much), but can ...
2
votes
1answer
137 views
Configure Windows to Read/Write Shared SAN
I am working on building a NLB cluster to load balance for JavaEE portal. Both are Virtual Windows 2008 R2 and connected via Fiber Channel to an EMC SAN Storage. They should read/write files into the ...
1
vote
1answer
199 views
How do you get iSCSI multipath to discover new LUNs that have not been partitioned yet?
Oracle Linux 6.3 iscsi multipath shows LUNs with existing file system but not the raw block devices that have not been partitioned yet.
When I run multipath -ll it will show a LUN that has previously ...
1
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2answers
397 views
What does this mean: “SATP VMW_SATP_LOCAL does not support device configuration”?
Can anyone tell me what this means in ESXi 5.1?:
SATP VMW_SATP_LOCAL does not support device configuration
I've googled it and I get a lot of results, but as yet all the pages that contain the ...
