Block size, so what's the verdict?

Similar Questions

• dependent on the block size of oracle on the block o/s size

  Dear all,
  
  
  What is dependent on the block size of oracle on the size of block o/s?
  
  Concerning

  Oracle data block is the smallest logical unit to store oracle data and that's usually multiple o/s block size.

• It is possible to run Adobe Bridge CS6 on my Toshiba 32 bit?, I don't know why, but when I try to run this program, then the DEP blocks Adobe Bridge, what's the problem?

  Adobe Bridge CS6 on my Toshiba 32 bit?, I don't know why, but when I try to run this program, then the DEP blocks Adobe Bridge, what's the problem?

  This means that the program will use the incorrect memory or he is attacked by hackers or virus. See if there is an updated version.

  To allow the program to function in any case type DEP in the Start menu - Help and Support.

  Help

  Change Data Execution Prevention settings

  Data Execution Prevention (DEP) is a security feature that protects against viruses and other security threats by analyzing your programs to make sure that they use the system safely memory.

  If you choose to protect all programs, you can always turn off DEP for individual programs. If you think that a program does not run correctly when DEP is enabled, check for a compatible version of the DEP program or an update from the software publisher before you change your DEP settings.

  1. Click to open the system.

  2. Click Advanced system settings.  If you are prompted for an administrator password or a confirmation, type the password or provide confirmation.

  3. Under performance, click settings.

  4. Click the Data Execution Prevention tab, and then click turn on DEP for all programs and services except those I select.

     To turn off DEP for an individual program

     • Select the check box next to the program that you want to turn off DEP for and then click OK.

       If the program is not in the list, click Add. Navigate to the Program files, search for the executable file of the program (it will have the .exe extension) and then click Open.

     To turn on DEP for an individual program

     • Clear the check box next to the program that you want to turn on DEP for and then click OK.

• Cannot update creative cloud, error code 1003. I think that its blocked by webfilter, what is the URL to update the server?

  I think that its blocked by webfilter, what is the URL to update the server?

  Please remove Cloud Creative app-

  • Using creative cloud | Uninstall the creative cloud desktop application
  • https://helpx.Adobe.com/Creative-Suite/KB/CS5-cleaner-tool-installation-problems.html

  Install the cloud creative app - https://helpx.adobe.com/creative-cloud/help/install-apps.html

• Block size and cannot run the snapshot-

  Hello

  I have the following LUNS carved to my windows 2008 r2 SQL box.

  ESX 4.0

  Lun1 - size - 230GB of OS 1 MB size block

  LUN2 - DataUn 4 MB block size - 950 GB

  LUN2 - size - 500 GB of block DataB 4 MB

  LUn3 - records the block size of 1 MB - 200 GB

  When I try to run a backup, veeam, got the following error

  < Unspecified file name > file is larger than the maximum size supported by the data store ' < indeterminate datastore >

  What could be the cause and how to fix it so I can run a backup on this virtual machine. How big a LUN should I create?

  Joe.

  Check this KB, would be useful

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=1012384

  -A

• What's the verdict? (E2 bluetooth)

  The Tungsten E2 bluetooth capable is synchronization?  I read both types of arguments.   (Some say he only can with a bluetooth 'map' that Palm used to sell.   Some say bluetooth is available as is.  (After all, it has an app "Bluetooth" on the device itself said, even after hard reset.

  In order to dispel any confusion, what is right?

  Hello whatsizbucket, welcome to the HP support community!

  The E2 has a Bluetooth radio.  The T | E does not have.  See this link:

  http://KB.hpwebos.com/wps/portal/KB/common/article/38753_en.html

  What you are interested in the synchronization?

  WyreNut

• What is the unit allocation size that is displayed in the window to format USB?

  Original title: allocation unit size

  What is the unit allocation size that is displayed in the window to format usb

  Hi Moaz,

  Thanks for posting your question in the Microsoft Community.

  I understand that you want to know the unit allocation size that is displayed in the format USB window. Correct me if I'm wrong.

  I will certainly help the question of fixing.

  In computer file systems, a cluster is the unit of allocation of disk space for files and directories. To reduce the load of the management of data on disk structures, the file system allocates no individual disk sectors, but contiguous groups of sectors, called clusters.

  On a disk that uses 512-byte sectors, a 512-byte cluster contains one sector, whereas a 4-Kibibyte (KiB) contains eight sectors.

  Refer to the below mentioned article and see if it provides information that you are looking for.

  By default for NTFS cluster size, FAT and exFAT:

  http://support.Microsoft.com/kb/140365

  Your response is very important for us to ensure a proper resolution. Please get back to us to help you accordingly.

• The guest operating system block size

  Hello

  Although guset OS block size is determined by the ESX Server, is it possible to change the size of the blocks by each guest operating system?

  I installed ESX4.0 and 3 both guest OS.

  but I would like to change the size of the block!

  My shared storage is NetApp.

  I also have a vCenter as a virtual machine.

  Thank you!

  You can change the size of the block of the partitions for your computer virtual guests. When you format a partition in your guest virtual computer, you have the choice to be formatted for example 4K, 32K or 64K. You will want to choose a number so that the partitions are lined up along 128 K. I think that you can choose the 32, 64, or 128 K. This applies to your data since the boot partition partitions have to be aligned.

  Mike

• Find the appropriate block size?

  Hi all
  
  I think this might be a simple question, how to find the block size that is appropriate for the construction of a database for a specific application?
  
  I had always seen default 8K block size is used everywhere (about 300-350 databases I've seen so far)... but why and how they believe this block size blindly before creating the production database.
  
  Also in the way the parameters of memory are finalized before creating the database?
  
  -Yasser

  YasserRACDBA wrote:
  OK I understand, but how will comparative analysis for the examination does not block size?

  I mentioned BLINDLY word because before implementation into production, how s/n allows to find the block size that is appropriate for this application.

  Well, as I said, it needs comparative analysis. And if you are not able to do it, the best is to stick to the default size. Read more intensive databases may need some play with the size of the block, but this summary is not authoritative at all, at least not from me. So I say to be on the safeside, by default would help you.
  >

  Right now I have no clear idea on the database of benchmarking, can you please help with this if you have done this by hand before it please...

  Charles and Greg presented very good test cases showing that using 8k is the most optimal choice in most of the cases.
  

  Once again my bad luck that I lost this post before having a look. Are there opportunities to find these test cases?

  See this summary made by JL on his blog,
  http://jonathanlewis.WordPress.com/2008/07/19/block-sizes/

  HTH
  Aman...

• OS and Oracle block size block size

  [Condition] If the size of the block of BONE [512 b - 64K] is greater than the size of block Oracle [2K - 16K]

  Assume: BONES Block Size: 32K and Oracle block size: 8K

  Quebec: One-to-many relationship will always be true? or block Oracle will use 8K to 32 K, and the rest will be unused? or it will return the error at the time of the creation of the data file?

  This will challenge the relationship "one to many".

  Leader: Oracle logical and physical storage diagram.svg - Wikimedia Commons

  Refer to the basis of the diagram.

  " --------------------< "="" show's="" one="" to="" many="" relation.="" one="" x="" can="" contain="" many="">

  ">-------------------<" show's="" many="" to="" many"="" i.e="" many="" x="" can="" contain="" many="">

  You don't seem to be read or understand what everyone says.

  There is NO such "one to many" relationship. Like I said above

  There is no 'validation of one to many '.

  1. the operating system uses a given block size

  2. you choose an Oracle block size

  All these "one to many" is just the result of the choices you made in #2 above. There isn't any 'validation' that occur.

  This likely diagram shows this relationship based on the recommendation of Oracle to select a block size that is a multiple of the block size of OS. If you do that this diagram will NOT reflect the case of NORMAL use.

  You can't believe everything you see on the internet. Articles/diagrams and others are often from unknown or reliable sources.

  2.

  'Validation' is not any process.

  I just wanted to write the Validation of the theory, the relationship.

  Re-read what I just said again above.

  There is NO validation. There is NO theory of validation.

  All there is is the reality of the block size, you choose and the reality of the OS block size you use. Any relationship between these two values is just a reflection of these two values.

  If you choose two different values, they have a completely different relationship to each other.

  Oracle works with blocks of the Oracle. The operating system works with the BONE blocks. Oracle does not care really what size a block of BONE is in connection with an Oracle block.

• 1.8 to VMFS watch block size of 1 MB - WTF?

  We have a box 4.0 on which we have created multiple VMFS, each about 1.8 TB volumes.

  All three volumes appear and we have been using them, but today we came to increase the size of a VMDK and found that he maxed out at 256 GB.

  By looking at the properties of VMFS volume, all three show that 1.8 to, or one of them (one is this VMDK) shows a block size of 1 MB.

  By definition, if I understand correctly, you cannot have a 1.8 to VMFS with block size of 1 MB, so what is the best way to combat this?

  The server is a stand-alone, so it is not shared storage, nor is the server connected to a vCenter server.

  Thanks in advance.

  Block size does not affect the size of VMFS, it only affects the maximum size of the single VMDK file. So, it is perfectly valid to have datastore VMFS 1.8 to with 1 MB block.

  You must evacuate all virtual machines that store of data and reformat the drive with the largest block, I'm sorry, but it's your only option.

  Tomi

  http://v-reality.info

• Pointer of RDM / vmfs block size?

  We run ESX 4.0 on Dell R710s connect to a network SAN IBM N-Series on CF.

  This week we had a major outage due to a server RedHat MySQL fall.

  Off firstly the server wouldn't boot past virtual POST-sachant a RDM disk I have it deleted from the configuration. The server would then boot to OS, but every time that the ROW was reconnected it would either fall or unbootable.

  I remembered we had farily recently expanded space on this server and the RDM was now 300 GB in size. However the space used was only 85% on the lun (255GB). Then I remembered the limits of block size. The server was sitting on a partition vmfs with a block size of 1 MB (256GB max). So I removed the RDM and svMotion had the server in a data store that have a block size of 2MB, reconnected the RDM and the server starts very well. After a consistency check DB we were back running.

  This survey of fault, I went to read the document of maximum rates of the white paper

  http://www.VMware.com/PDF/vSphere4/R40/vsp_40_config_max.PDF

  to be honest - had some vague information on RDM

  and then I found VMware KB

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1029697

  surprising to me, which clearly states the pointer RDM files are affected by the block vmfs sizes.

  However, there is a difference of opinion in this thread

  http://communities.VMware.com/message/1507498

  And look further in my own environment, we have several production server running with connected RDM which are excessive in size until the limits of said block size.

  I need clarity defined on it because as he sits down we could have several production machines in an unstable state, or I'm just left with no explanation for the disc lock, we witnessed and a power outage that caused a substantial loss of business.

  concerning
  wolfsonmicro

  Post edited by: wolfsonmicro Click accidental - it is always a request without response

  My understanding is that the LUN cannot be greater than the maximum size supported by the data store on that of RDM file pointer is created.  Pointer RDM file does not need to be stored on the same data store, Setup or other files vmdk files, for example you could have moved the file pointer RDM from a store of data with a larger block and left the vmx file and the data store other files vmdk with a block of 1 MB.

  Are you sure that files of pointer RDM for running virtual machines, you have on data with blocksizes warehouses NOT supporting the LUN size they point?

• What is the best practice to block through several layers sizes: hardware and hypervisor VM OS?

  The example below is not a real Setup, I work with, but should get the message. Here's my example of what I'm doing as a reference layer:

  (LAYER1) Hardware: The hardware RAID controller

  • -1 TB Volume configured in the 4K block size. (RAW)?

  
  

  (Layer2) Hypervisor: Data store ESXi

  • -1 TB of Raid Controller formatted with VMFS5 @ block size of 1 MB.

  
  

  Layer (3) the VM OS: Server 2008 R2 w/SQL

  • -100 GB virtual HD using NTFS @ 4 K for the OS block size.
  • -900 GB virtual HD set up using NTFS @ 64 K block size to store the SQL database.
  • 
    

  It seems that vmfs5 is limited to only having a block size of 1 MB. It would be preferable that all or part of the size of the blocks matched on different layers and why or why not? What are the different block sizes on other layers and performance? Could you suggest better alternative or best practices for the sample configuration above?

  If a San participated instead of a hardware on the host computer RAID controller, it would be better to store the vmdk of OS on the VMFS5 data store and create an iSCSI separated THAT LUN formatted to a block size of 64 K, then fix it with the initiator iSCSI in the operating system and which size to 64 K. The corresponding block sizes through layers increase performance or is it advisable? Any help answer and/or explaining best practices is greatly appreciated.

  itsolution,

  Thanks for the helpful response points.  I wrote a blog about this which I hope will help:

  Alignment of partition and blocks of size VMware 5 | blog.jgriffiths.org

  To answer your questions here, will:

  I have 1 TB of space (around) and create two Virutal Drives.

  Virtual Drive 1-10GB - to use for OS Hyper-visiere files

  Virtual Drive 2 - 990 GB - used for the storage of data/VM VMFS store

  The element size of default allocation on the Perc6 / i is 64 KB, but can be 8,16,32,64,128,256,512 or 1024 KB.

  What size block would you use table 1, which is where the real hyper-visiere will be installed?

  -> If you have two tables I would set the size of the block on the table of the hypervisor to 8 KB

  What block size that you use in table 2, which will be used as the VM data store in ESXi?

  ->, I'd go with 1024KO on VMFS 5 size

  -Do you want 1024KO to match the VMFS size which will be finally formatted on top he block?

  -> Yes

  * Consider that this database would eventually contain several virtual hard drives for each OS, database SQL, SQL logs formatted to NTFS to the recommended block, 4K, 8K, 64K size.

  -> The problem here is THAT VMFS will go with 1 MB, no matter what you're doing so sculpture located lower in the RAID will cause no problems but does not help either.  You have 4 k sectors on the disk.  RAID 1 MB, 1 MB invited VMFS, 4 k, 8K, 64 K.   Really, 64K gains are lost a little when the back-end storage is 1 MB.

  If the RAID stripe element size is set to 1 024 Ko so that it matches the VMFS 1 MB size of block, which would be better practice or is it indifferent?

  -> So that's 1024KB, or 4 KB chucks it doesn't really matter.

  What effect this has on the OS/Virtual HD and their sizes respective block installed on top of the tape and the size of block VMFS element?

  -> The effect is minimal on the performance but that exists.   It would be a lie to say that he didn't.

  I could be completely on the overall situation of the thought, but for me it seems that this must be some kind of correlation between the three different "layers" as I call it and a best practice in service.

  Hope that helps.  I'll tell you I ran block size SQL and Exchange time virtualized without any problem and without changing the operating system.  I just stuck with the standard size of microsoft.  I'd be much more concerned by the performance of the raid on your server controller.  They continue to do these things cheaper and cheaper with cache less and less.  If performance is the primary concern then I would consider a matrix or a RAID5/6 solution, or at least look at the amount of cache on your raid controller (reading is normally essential to the database)

  Just my two cents.

  Let me know if you have any additional questions.

  Thank you

  J

• What are the advantages and disadvantages for the largest block size and

  What are the advantages and disadvantages for the largest and the smallest block size block size?

  Smaller size of block

  Benefits
  Relatively large GoodHas air space due to metadata
  (i.e. block the header).
  Not recommended for the outline. He could only
  be stored for each block, or worse, a few lines line
  If one line does not fit into a block, for small lines with a lot of chance of chaining
  access.
  Reduced block contention.
  Disadvantages
  A relatively large air space due to metadata
  (i.e. block the header).
  Not recommended for the outline. He could only
  be stored for each block, or worse, a few lines line
  If one line does not fit into a block of chaining.

  Larger size of block

  Benefits
  Lower overhead, so there is more
  room to store the data.
  Allowed to read a number of lines in
  the buffer with a single I/o cache
  (according to the size of line and block size).
  Good for very large or sequential access
  lines (for example, LOB data).
  Disadvantages
  Waste of space in the buffer cache, if you
  random access to small lines and have a large block
  size. For example, with a size of 8 KB block and 50
  size byte of the line, you will lose 7 950 bytes in the buffer
  When you make a random access cache.
  Not good for the index used in an OLTP blocks
  environment, as they increase the claim to block
  on the leaves of index blocks.

• What is the upper limit of the size of a new hard drive in a gateway MX6453?

  Title: original size for replacement laptop hard drive?

  I want to upgrade to a hard drive more in my Gateway MX6453.  He is currently 160 GB, and I am running SP3.

  I was warned by my computer technician I couldn't be able to go further, and I have certainly shouldn't push my luck and try something beyond 250 GB.  I contacted gateway and the rep online says 160 is too big, I could go - even if it is not clear if she was citing an authoritative source, or just read the greatest opportunity of their authorized supplier spare parts list.

  Another tip from reading, I found it is often a problem with XP about Logical Block Addressing, which would limit the readable size 127 GB.  However, as my system currently reads 143GB in my C drive partition, I guess this isn't a problem.

  Is there another BIOS or XP limit on this disc of size I can use?
  If so, how to determine what it is?
  And, is it possible to change it?

  Thank you.

  I went ahead and cloned a 250 GB drive, and everything seems to work well.

  The folks at the blue and yellow big box store were very helpful, pointing out a software that can be started and run from its own DVDs at a reasonable price, then the process prescribed only an external enclosure for the new disc of cloning.  Also do they think that a drive yet more would be a problem, but they were only up to 250G to PATA drives (I think I've seen bigger PATA from the same manufacturer online).

  I had barely a few minutes ago selection only one file in Windows Explorer, instead of the file clicked and everyone listed before it, but it seems to have disappeared after a reboot.  I'll post back here if that repeats or there are other problems, but for now it doesn't seem like there should be no problem for those who want to like me.