The CARS performance bottleneck will be the shared disk storage?

Similar Questions

• new unseen files on the shared disk (rise of 2 VM Debian)

  Hello community,

  I'm quite new to VMware ESXi 3.5 and I can't find a solution for my environment, although I already read a lot of threads here and looked for other sources of help.

  I run 2 VMS Linux Debian and want to share my MP3 disc. The shared_mp3.vmdk was created with the 'thick' option and can be fixed on two VMS with success.

  If Debian VM #1 creates new files to the disc MP3, they are not visible to VM Debian #2.

  The only solution inside the VM Debian #2 is to umount SCSI 1:0, wait a few seconds and then raise it again. Of course, stop VM Debian #2 of the VI client and it starts again, makes the visible files, but both solutions are not a solution for this problem.

  Can anyone provide assistance?

  Do I need to install the software of protocoll sharing SCSI-2?

  Thank you in advance for your help!

  Here's my detailed environment:

  VMware ESXi 3.5 U4 with 2 VM Debian on the same physical host:

  VM Debian #1:

  'big' server that processes for example the new MP3 files and converts them to lower bit rates (e.g. for my iPod)

  Located within a green network behind a firewall with a write access to the MP3 disc.

  LSI Logic SCSI controller 0 with root disk (SCSI Bus sharing: None, debian1.vmdk located on the local storage as SCSI 0:0)

  LSI Logic SCSI 1 controller with MP3 disc (shared SCSI Bus: virtual, shared_mp3.vmdk is independent/persistent and located on local)

  storage as SCSI 1:0)

  (shared_mp3.vmdk has been created with the "thick" option)

  SCSI1.sharedBus = "virtual".

  Disk.Locking = "false".

  VM Debian #2:

  UPnP streaming server

  Located inside a red network with read access only on the MP3 disc. Debian Linux get the MP3 drive read-only.

  LSI Logic SCSI controller 0 with root disk (SCSI Bus sharing: None, debian2.vmdk located on the local storage as SCSI 0:0)

  LSI Logic SCSI 1 controller with MP3 disc (shared SCSI Bus: virtual, shared_mp3.vmdk is independent/persistent and located on local)

  storage as SCSI 1:0)

  SCSI1.sharedBus = "virtual".

  Disk.Locking = "false".

  iSCSI would push you in the same boat that the shared disk.  Two are block-level and will need you to have some sort of awareness of the bunch to them.  If you have only an ESXi host, you can create an internal network only for the two to speak to GFS or OCFS2 vm.  If you have more than one ESXI host, then you can consider a cross-over for both servers, or even a hub/switch only for the private network. You can run GFS on the same network as the usual traffic, it is not "necessary" to have a private network, comes to recommend, and it's only for server coummunication between them.  You need to open ports so that it goes to your vm.

  -KjB

  VMware vExpert

• How to create the shared disk between 2 ESXi servers

  Hello

  I created a laboratory with ESXi4.1 and ESXi5.0 machines with a few virtual machines on them on my laptop using vmware workstation 7. Now, I'm trying to add a disk to the two virtual esx hosts so that I can create a store of data through them to do some testing from day to day, but so far I managed to do it. I'm afraid of how would I have accomplished my test laboratory. Can someone help me on this please. Thank you.

  Kind regards

  AB

  beckham007fifa wrote:

  I created a laboratory with ESXi4.1 and ESXi5.0 machines with a few virtual machines on them on my laptop using vmware workstation 7.

  You cannot use just a shared between two virtual hosts of ESXi, but put up some "fake" your iSCSI storage, shared disk which could be executed in another VM on your VMware workstation. Here is a guide how to set this using the free Openfiler: http://rickardnobel.se/archives/26

• Not visible in the shared disk Cluster Storage Configuration dialog box

  When installing the 10 g to Oracle clusterware dialog "Cluster Storage Configuration" shows no shared disks.
  
  We use:
  
  Windows Server 2003
  
  HP Eva 4400

  Glad you liked the doc - Please feed back any info on the doc direct me

  they do not need to be logical for OCR devices and vote - I'm not 100% sure devices ASM - but a best practice is to create the logical volumes for all

  Philip...

• Photos on the local disk storage

  Photos is storage of photos on my MacBook Air even though I have iCloud. Taking up to 12 GB on the hard disk.  In preferences, I 'Use iCloud library' checked with 'optimize '.  Why should a space on my hard drive? Is there anyway for there no pointed out that memory?  I have a lot of room in my iCloud (143 GB) account for storage. I tried dragging and deposited in iCloud, but that did not work.

  The fine print under Photos preferences settings optimize storage includes the words: "Original is also stored on the Mac if you have a storage space."

• ESX HA and disks not shared with the shared disks

  I have a question for everyone. I am wondering what will happen to have allowed HA and have a few LUNS that are only accessible to an ESX server and LUNS that are available to all ESX servers in a farm. That will totally break HA or it will simply manage guests who are accessible to all guests and forget the guests who are on the logical unit number that is visible to a single host.

  Thank you

  VM is placed on private Lun just does not start on an another ESX, that's all.

  ---

  VMware vExpert 2009

  http://blog.vadmin.ru

• DBCA does not see the shared disk

  Hello
  10 g R2 on Win 2003 server.
  On my server, I have a file system shared mapped F: (which is physically on another machine). I run DBCA to create a database with data on F:\Data files. But when I braws to indicate F: for the location of the flash_recovery_area, we can not see F:. And finally, it fails saying it cannot create F:\Data\SYSTEM01.dbf.
  I logged in as a domain administrator to run DBCA and there write access to F:\.
  
  Thanks for help.

  Hello

  Try to provide sufficient access rights to the user Oracle - owner - like domain administrator privileges and run the DBCA Wizard again and check you problem could be resolved

  -Pavan Kumar N

• check and blue or green box returns the hard disk storage

  I had this problem every since I bought the external drive.  Loads of storage there, but when I view a file, if I use all or part of it, restore it, there is a blue or green box which returns with the restored item.  The green box is enabled, and the blue box has double arrows pointing to the right.  What a pain...  I placed in checked and removed indexing and archive capabilities, and who will be after several tests some of them take off the file, but so far I can only do one at a time.  I'd rather the machine in the dumpster than that and if I replace the external hard drive, I have one problem with another.  The problem has nothing to do with windows 7 or 8, I upgraded from 7 pro 8 and they both do the same thing.   ANY IDEAS?  EVEN A HINT?  ?  I THINK THAT I FORMAT THE DISK AND THROW IT INTO THE RIVER. .

  AJ jackson

  Looks like your drive came with a program that synchronizes data. Or you are looking to your Skydrive storage folder.

  

  -steve

• Risk of a Windows XP Professional.vmwarevm vmware fusion on a shared disk storage

  I am running VMware fusion on a MacBook Pro.  I have an image of Windows XP SP3.

  What are the risks of store this image on a shared drive or a shared backup device (for example, Apple Time Capsule)?

  Can someone ' find one/view the files stored in the Image of XP?

  Are there other risks of privacy / security?

  Thank you

  All the XP files in multiple files .vdmk in the bundle can be easily consulted are

  Eric has already answered the second part of your question so I'll answer the first part.  While they are not as easily seen as just see hard files exist, as to see in the Finder for example, nevertheless he who has access can also, with the right tools, see the contents of files hard otherwise encrypted.  In other words, hard files can be mounted with a ctrl-click > open with... > VMDKMounter.  There are other programs that can open and view the content without a ride just like opening a .zip file in BetterZip.

  Most is, with the exception being encrypted and one without knowing the password, then anyone who has knowledge and access can see what they want.

  Which bring back me to my original statement: "the risks are the same as with all other files/folders, you choose to store here where.

• Why the SAN disks and drives NAS recognized differently by the computer?

  Hi all;

  I'm a newbie in the sharing of storage.
  Why the SAN disks and drives NAS recognized differently by the computer? Computer sees SAN disks as local drives, NAS drives as network drive, even if they are all connected to the computer by the same network topology.
  I knew that SAN uses the block level transfer to transfer data all in SIN use level file transfer. Is that what this has something to do with which SAN and NAS drives are recognized differently by the computer? If so, how?

  Thank you.

  Hello

  The question you posted would be better suited in the TechNet Forums. I would recommend posting your query in the TechNet Forums.
  http://social.technet.Microsoft.com/forums/en/w7itpronetworking/threads

• Whenever I have print to the shared printer on my desktop Windows 7, the print job will just sit in the print queue.

  Whenever I have print to the shared printer on my desktop Windows 7, the print job will just sit in the print queue.  If I stop and then start the print spooler, the job will print.  It happens from an XP laptop. Print jobs sent from the computer Windows 7 local print just fine.

  How can I solve this one?  :(

  
  

  This problem with some windows running portable computer particular Xp and windows 7 family

  Hello

  Thanks for posting your question in the Microsoft community forum!

  I understand that you can not print over the network. I will try to help you with this question.

  (1) did you make any changes before the show?

  (2) you receive an error message/code?

  I wish that return you these items for you help in detail.

  Method 1: Open printer troubleshooting.

  http://Windows.Microsoft.com/en-us/Windows7/open-the-printer-Troubleshooter

  Method 2: Install a printer

  http://Windows.Microsoft.com/en-us/Windows7/install-a-printer

  Method 3: Install a printer on a home network

  http://Windows.Microsoft.com/en-us/Windows-Vista/install-a-printer-on-a-home-network

  Also applies to Windows 7

  Method 4: Troubleshoot network printer

  http://Windows.Microsoft.com/en-us/Windows-Vista/troubleshoot-network-printer-problems

  Also applies to Windows 7

  Method 5: File and printer sharing: frequently asked questions

  http://Windows.Microsoft.com/en-us/Windows7/file-and-printer-sharing-frequently-asked-questions

  Please post back if you have any questions about Windows. I will be happy to provide you with the additional options that you can use to get the problem resolved.

• Since then he move to Windows 7 pro, the shared link will open the program, but the database is not up to date.

  I have a .net programming when it was on XP pro it worked fine. Since moving to Windows 7 pro the shared link will open the program, but information is not updated, because it seems that she has created its own database with information from the local computer is installed on and is not matching the information. For example, if the local computer is mapped machine upon receipt #25 is the #15 and should be on #26 and showing all the other receipt printed by the local machine. but its starts from where it was stopped 2 days ago, and is not followed.

  OT: .mdb problem with WIN 7 pro

  Thanks for all the help, I need it!

  Hello

  The question you posted would be better suited to Windows 7 IT pro community.
  http://social.technet.Microsoft.com/forums/en-us/w7itpronetworking/threads

• Adobe Design Standard CS3 will not install because of the "shared components Installation failure".   Help?

  I keep trying to install CS3 Photoshop, Illustrator, InDesign pack.  But it is not because of the "shared components" do not install.

  I tried to use the cleaning tool.

  I tried to turn off my security system.

  It still does not work.

  I looked in the Windows Event Viewer and the MSI installer says that the Flash Player 9 could not register.   This is why I can't install CS3?   If so, what can I do to fix this?  Help, please!

  Hi neptunecadet,

  Please make sure that you install correct and you must also make sure that you have an operating system that is compatible with CS3.

  Please follow the steps mentioned in the https://helpx.adobe.com/creative-suite/kb/component-install-failed.html

  Let us know if this helped!

  Kind regards

  Aurélie hamadi

• How to install DSO on the shared cluster no

  I am trying to build Oracle RAC on the shared cluster No.
  The cluster has multiple nodes and each node has a disc. (normal shared nothing cluster)
  
  Before you install Oracle Database and RAC, I tried to install Oracle Grid Infrastructure
  based on the guide. < http://www.oracle.com/pls/db112/portal.portal_db?selected=11 >
  As you know, Oracle Database is a shared disk architecture, so I want to create a (virtual) shared disk to ASM,
  but I don't really understand how.
  
  The Oracle Grid Infrastructure installation program has a node in defining, but only looking at disks on the node of the installer.
  Also, seems that Setup installs only one instance of AMS on the Installer node.
  What I want to do is install on each node of the ASM instance and connect them to create a shared disk.
  Is it possible to do so by the installer?
  Or is it possible to do it manually?
  I'll be very appreciated if someone gives me guides to follow to get there.
  
  Thanks in advance.
  
  Published by: 935485 on May 21, 2012 03:54

  935485 wrote:

  I little understand what you want to say after reading the documents again.
  So, is it possible to install Oracle RAC on a cluster without sharing?

  N °

  Oracle RAC can run on a distributed as lustre file system?

  Yes. But not recommended.

  I first thought that OCFS is a file system distributed as gloss as aggreates local disks on a shared nothing cluster and create a virtual view of the disks but it is fake, right?

  Yes. OCFS is used on a shared cluster storage (scsi devices seen by all nodes in the cluster) to present as a cooked file system storage. Not recommended to use Oracle RAC.

  Oracle RAC is a single physical database, residing on the shared storage. Each cluster node has an instance of database engine that rises and opens this same database. Interconnection allows you to basically share the memory of these nodes (share data in memory cache and communicate with each other).

  The end result is a commune-all the cluster. The complete database is available on each node in the cluster.

  The key components for CARS are the interconnection and the shared storage.

  The recommended interface is Infiniband (QDR/40 GB) - or, failing that, GigEthernet (10 GB). Low latency is critical for performance as cluster logical I/O is done essentially in this infrastructure, and it must be much faster than the physical i/o over the layer of fabric I/O. In other words, it's the kind of stupid to use 1 Gb Ethernet for interconnection and then channels shared double fiber 2 GB by access to the storage node.

  Shared storage is the next component. The most common is to a storage array that provides the fiber channel connectivity (e.g., EMC and others). HBA (double fiber ports) cards are installed per server and connected to the switch of storage host. LUNs are published for these HBAs and all the server nodes can see the same set of table storare lun. MPIO (assuming that Linux) is used to deal with the multiple paths of I/O (via dual fiber channel ports) to the LUN.

  Another option is Infiniband connectivity and use the SRP Protocol (Scsi access remote direct memory access Protocol). Exactly looks the same conceptually than the fibre channel option, but simply travels Infiniband. Fibre channel is currently at close to 8 Gbps max I think. InfiniBand QDR (Quad Data Rate) provides 40 Gb/s. It is also what produces RAC Oracle h/w called Exadata Database Machine uses (the fastest CARS currently available h/s).

  Other options use iSCSI for example - storage over Ethernet. But this requires at least 10 GB GigE a private network dedicated to your layer of fabric I/O. If you think that any decent kind of performance from him.

  Then come the R & D. virtualization approaches - run 2 virtual machines on the same hardware and provide storage shared for these virtual machines (you can for example provide access to systems of comments directly to the device host system scsi drives gross). Or you can use Firewire 800 and a 1 TB drive wire to both RAC nodes firewire, the Firewire shared storage drive.

  Performance and robustness of oracle RAC are directly related to the architecture of interconnection and the shared storage. So if you are planning to hack which (such as the use of a system of files distributed like chandelier), don't wait not performance or a robust CARS. Or Oracle Support.

• A very basic question about the shared storage

  To implement GR 11, 2 in Sun SPARC 5.10, our sys admins have allocated block devices in the shared storage and they sent us a letter mentioning the disks. This is what looks like their mail
  
  Storage attached with the Node1
  

  /dev/rdsk/c4ikdzs3
  /dev/rdsk/c4ikdzs4
  .
  .

  Storage attached to Node2
  

  /dev/rdsk/c5ikdzj2
  /dev/rdsk/c5ikdzj5
  .
  .

  When I connect with the Node1: / dev/rdsk, I see

  /dev/rdsk/c4ikdzs3
  /dev/rdsk/c4ikdzs4
  .
  .

  as they have said. Same for Node2
  
  
  But all raw devices mentioned above should be visible at/dev/rdsk of nodes. Right? Isn't that whole point of CARS; Shared storage ?

  resistanceIsFruitful wrote:

  But all raw devices mentioned above should be visible at/dev/rdsk of nodes. Right? Isn't that whole point of CARS; Shared storage ?

  Not exactly, if you are referring to the names of devices...

  Each core will make a discovery to support when starting. When dealing with the LUN through one HBA (or similar), there is absolutely no guarantee that the nuclei will detect the LUNS in the same order and assign the same scsi device names to them. A LUN can be called device-foo-1 on a single server and device-foo-21 on another.

  In addition, several HBAs will be dual port and dual fiber running channels. So, not only is the same logic unit seen as a scsi device, different number of each core but you can see more than once. Device-foo-1 and device-foo-33 may be the same physical LUN on server 1.

  To solve this logical device name is required. This will be the name of the same device on all servers - and that it will support multiple paths of I/O to the LUN in turn seamlessly. This is done by looking at the unique signature of the SCSI - called WWID or World Wide nameof the software "special driver. With this unique signature, s/w only recognizes a specific LUN, regardless of what server s/w runs on.

  This s/w is called Multipath on Linux, EMC Powerpath and so on. I expect that you will have something similar on your servers.

  Scsi device that is mapped by the kernel to the unit number logic is not used. In the case of multipath , for example, use the + / dev/mpath/mpath+ devices. In the case of Powerpath, these will be + / dev/emcpower+ devices.

  What are the names of device you will use to 11g Grid Infrastructure and Oracle ASM and RAC installation and configuration of shared storage.