Storage EMC SAN for ASM

Similar Questions

• file system support for ASM with NAS?

  Can someone tell me the management system of files for ASM with NAS?

  Thank you

  How To Create ASM starts using NFS/NAS files? (Doc ID 731775.1)

  http://docs.Oracle.com/CD/E11882_01/install.112/e17212/storage.htm#CWLIN291

• Adapter replication storage EMC RecoverPoint with 10 K version 2.1 of the VMAX is necessary

  Dear Sir

  Someone has the link of version 2.1 for adapter replication storage EMC RecoverPoint with VMAX 10 K because I couldn't get it and version 2.2 is not compatible

  Emergency aid pending

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• Storage - EMC or NetApp training? -What is the opinion which continue to increase identification of Collect information?

  Storage - EMC or NetApp training? -What is the opinion which continue to increase identification of Collect information?

  I get a lot of job opportunities for VCPs with storage capacities. I work with the directors of storage on all commitments but don't go or experience. Which storage certification I should continue to allow me to work as a PCV with extra storage responsibilities? My experience has been with EMC, NetApp and 3Parr on fiber, NFS, and iSCSI. What training and certification provider would be better or at least the first to continue?

  Thxs

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• Training environment - how to emulate a SAN for training?

  I see that one of the great things about the whole VI3 is storage. So someone can give me advice on how to create a San for training (it should be small) is using the PC 4 x each with 2 x IDE 40gbs (gigabit NIC required?) or by creating several VM SCSI HARD drives. There may be a few freeware out there that can use the virtual machine?

  NetApp is a complete Simulator that you can download for free, but only runs on a Unix based system system.

  Good luck!

• discs not showup for ASM while insalling 11 GR 2 on solaris 10 using gui

  Hi all
  
  
  Try GR 11, 2 fresh rac installtion on two-node sun sparc physical boxes update of solaris 10 9 have LUN iscsi (created from sun VM storage array) everything is smooth until
  We come to the option "create the ASM disk group" when he is not able to uncover disks for ASM default group. tried to use the trails of discovery of mutation ' / dev/rdsk / *', but of no use. OS on both nodes shows the disks are available using the format and and has created a system of files on them to rule out the possibility that something wrong with the LUN.
  Could not find anything in the instruction manuals.
  Any help please.
  
  Thanks in advance.

  Hello
  If the thread has responded, please close the thread as answered.

  Levi Pereira

• Configuration of free filesystem disks for ASM? You can use free space for ASM

  Is there a way to devote space for ASM to create a database under the DSO?
  
  I was hoping I wouldn't have to reinstall the operating system Linux Enterprise 5 (Red Hat). So I uninstalled my environment RAC 2 nodes, installed required ASM RPM for Red Hat linux Enterprise 5 and then reinstall 11 g Clusterware and set "configure Automatic Storage Management (ASM).
  
  I missed something? Thank you

  Hello

  I recommend you to visit http://www.oracle.com/technology/pub/articles/wartak-rac-vm.html or http://www.oracle-base.com/articles/11g/OracleDB11gR1RACInstallationOnLinuxUsingNFS.php

  They are good examples to configure RAC

  In your example: you will only use ASM for DATDISK and OFRDISK.

• 128 GB flash storage is sufficient for most lapetops House

  Try to make my choice on laptop witch buy.

  128 GB flash storage is sufficient for most computers laptops home

  It is more than enough for me, but I doubt that it is for the most part. One thing you can do is to see how much space you use on your current computer.

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  Just drag the small window up just under the toolbar, you will see the area highlighted, and when you drop the file should anchor.

• A question about the use of disk space free on a RAID 10 for ASM?

  Is it possible to install/configure 11gDB under the CARS using left over 300 GB of disk space.
  
  I have all my drives configured in RAID 10 and I have 11g THAT RAC installed. I uninstalled RAC and database and then added the required RPM (ASM library and drivers).
  
  Successfully installed the RAC and then proceeds to installation and configuration of 11gDB for ASM using the available disk space.
  
  Is this possible? I get the error message: 11g DB intalled on RAC1 ASM cannot be used until the Oracle CSS service is started.
  
  Thank you

  You get this because CSS is not started, and ASM, it needs.

  As root, go in $ORACLE_HOME/bin and run:
  #. / Add a localconfig

• Creating DAS or SAN Disk Partitions for ASM

  Oracle® database Installation Guide 11 g Release 2 (11.2) for Linux (http://docs.oracle.com/cd/E11882_01/install.112/e24321/oraclerestart.htm#CHDBJGEB)
  
  * 3.6.3 step 2: * creating DAS or SAN Disk Partitions for Oracle Automatic Storage Management
  
  In order to use Oracle ASM a DAS or SAN disk, the disk should have a partition table. Oracle recommends to create a single partition for each drive.
  
  
  My question: why Oracle is recommended to create a single partition for each disc? For a disk to use on Suse Linux, I normally need at least 3 partitions, i.e., boot, swap and root.
  
  
  
  Scott

  These scores are for your operating system. Partitioning of a data disc is not very conducive to the continuation of the salary plan. Redundancy function what sense does make having 2 mirrors on 2 partitions on the same drive... When the disc goes down, you're toast. How you run your last command "Edit CV update s/n"

  As for the score, he should start cylinder 2 through . Crush the first 1 M drive will overwrite the table to partition and in the case of Solaris, the VTOC. (Virtual table) Without the VTOC table or partition, your device becomes a useless brick.

  If you have only a single disc, then ASM is not a storage solution that I would sue. You need a device for performance benefits.

• What is the best way to copy vm of one Esx to another without shared storage - San for example

  Hello

  I'm trying to copy a virtual machine from one Esx to another Esx on the network.   We do not have shared as a SAN storage.  The problem is that I do not know Linux command, so I tried to copy comments vm using Winscp.  The problem is Winscp did something to the file flat vmdk by adding an extension, and I can't change this extension with Winscp.  I'm doing something wrong.

  Thanks in advance for any help.

  What about VMware Converter?

• Terminologies of storage very important for VCAP-DCD

  I have compiled this post from different positions (Duncan Epping), passionate about Valentin Vipin vExpert, vmware KB, etc. So the stock of credit goes to them.

  I think this post will help the VCAP-DCD candidates for Design elements and objects of drag-and - drop.

  VMware has introduced a new architecture for vsphere storage called PSA (Pluggable Storage Architecture). This architecture using plug-ins. This (PSA) is simply the name of the new concept.

  Let's start with the native plugins of VMware.

  The Multipathing (NMP) Native is the default module that uses ESX (from vSphere). It contains the two ATAS (storage array of plug-in type) and PSP (plugin path selection) plug-ins.

  If your table is listed in the hardware compatibility list, VMware ESXi decided before (with the help of plugins PSP: VMW_PSP_FIXED VMW_PSP_MRU, VMW_PSP_RR) what paths multiple "algorithm" will be used. ESX will do natively: fixed, MRU, Round-Robin.

  Note: * native vmware Multipathing algorithm = > fixed, MRU, Round-Robin *.

  The NMP uses rules to decide who will serve as a storage array Type Plugin (ATAS) and Plugin access path selection (PSP) will be used. If you want to change these rules you can use 'esxcli' and you can find the rules in the "/ etc/vmware/esx.conf". For example the default PSP for the Bay EMC Symmetrix is fixed:

  / Storage/plugin/NMP/config [VMW_SATP_SYMM] / defaultpsp = 'VMW_PSP_FIXED.

  What does ATAS?

  The ATAS manages path fail-over, it's as simple as that. This of course will be reported back to the NMP, because the NMP is responsible to ensure a flow of e/s. The ATAS will monitor the health of a path and take the necessary steps according to the type of array. Nothing more, nothing less.

  What does the PSP?

  PSP determines which path will be used for a request of e/s, in other words the PSP addresses fixed, MRU and Round-Robin algorithm.

  Keep in mind that the type of the PSP that will be used has already been preconfigured, it's not the PSP who decides that if she will be fixed or MRU, it's the NMP which decides this based on predefined rules above.

  MPP

  What's next? It would be a Plugin (MPP) of multiple paths. VMware NMP is built by vmware, on the other hand MPP is developed by sellers of paintings. EMC is one of the suppliers who have already demonstrated their MP. Example: EMC MPP is known as Powerpath for ESX.

  -------------------------------------------------------------------------------------------------

  Different types of storage and Multipathing policy:

  Assets:-the storage system have two controllers and LUN (virtual disk or storage device) are accessible or host can perform i/o via the two controllers.

  Active-passive:-host may have I/O to and from a unit number logic via a controller only (through active controller-owner - of the LUN and not through the other)

  ALUA:-asymmetric Logic Unit Access is where the storage system simulates the function of assets (unit number logic is accessible via two controllers but alone will be the owner of it)

  Example: EMC VNX 5300 is not really active/active table. It just a group of asymmetric access logical unit.

  For this reason that ESX detect this EMC VNX 5300 as a storage ALUA and plug-in uses ATAS VMW_SATP_ALUA_CX.

  If a storage system is active/active, active/passive or ALUA, vmware PSP may be FIXED, SRM or RR based on array type. The general rule is:

  1. for an active-passive array, you will need to define the strategy of path (PSP) "most recently used". (The default PSP for active/passive storage devices is VMW_PSP_MRU). There is no path parameter with the MRU policy.

  2. an active-active array should have the policy path set to "fixed". (The default PSP for active storage devices is VMW_PSP_FIXED).

  Important: VMware does not recommend that you use VMW_PSP_FIXED for devices (table) that have the VMW_SATP_ALUA storage array type strategy assigned to them. This is because (according to my understanding) ALUA is not really active/active storage, so in this case, VMW_PSP_MRU should be used.

  3. for both active/active and active/passive array, we can choose "round robin (RR).

  The host uses an automatic path selection algorithm that runs through all Active paths connecting to arrays of active-passive, or through all the available paths connecting to the active tables. Automatic path selection implements through the physical paths available to your host for load balancing. Load Balancing is the process of spreading the i/o requests on the paths. The goal is to optimize the performance of flow as I/O per second, megabits per second, or response time.

  VMW_PSP_RR is the default value for a number of tables and can be used with both active-active and active-passive arrays to implement balancing on different paths LUN.

  Thus, the rule is to have chosen the PSP to the different array type:

  For active/active - FIXED, RR table

  For RR table - MRU, active/passive

  For ALUA table (which is really a simulated table not really active/active, active/active)-MRU, RR

  When storing ALUA, vmware SRM is also optimized / non optimized paths into account.

  So in the case of a previous path optimized operation, I/O is shifted to the optimized path (which previously used before a failover to a path not optimized)

  MRU switches to a different path when one of the following codes, meaning SCSI NOT_READY, ILLEGAL_REQUEST, NO_CONNECT and SP_HUNG are received from the table. Remember that MRU is not failback.

  For active/active SAN, the policy path sets a single failover occurs when detection SCSI 'NO_CONNECT' code is received from the table. When the path back a return will happen.

  As you can see, four against a single SCSI sense code. You can imagine what happens if you change MRU Fixed when it is not supported by the table. SCSI sense codes will be sent to the table, but ESX is not expected (NOT_READY, ILLEGAL_REQUEST, SP_HUNG) and a path will tilt.

  Great write!

  With regard to the PSP where it can be MRU or RR it is VERY important on review DCD that pay you close attention to the what the requirements are and what the instructions tell you to do.

  Other then that, great work to consolidate this information

• EMC PowerPath for iscsi or ESXi emebedded mpio connection

  Hi guys,.

  for my new farm ESXi 5.1, I have a lot of server and a large EMC storage one that I need to use with iscsi adapter and this new configuration we are thinking about using an EMC power path or do it at 5.1 ESXi mpio.

  Who are the real benefit to using mpio EMC Powerpath VS ESXi integrated 5.1?

  I'm not sure using it because reading a lot of problem for fixing ESXi and ESXi upgrade... There's a real advantage to use it?

  Thanks in advance.

  The advantage of the PP/VE on NMP is around 2 areas:

  (1) use of the track.  NMP uses only 1 channel at a time.  It can swithc between them quickly, but still only 1 at a time.  PP/VE can use all ways of concurrency.  Some clients of mine have seen 50% + performance increases.

  (2) recovery time.  PP/VE identifies MUCH faster than the NMP dead paths and opens the pathnames recovered much faster as well.