SAN Disk Performance size

Similar Questions

• My san disk will not work I have to do

  does not work my san disk

  could be 1 million reasons, maybe you have a large disk of size and it is not recognized, it is faulty, not formatted, card reader is faulty, the cable is defective, integrated card reader is faulty, drivers for card reader not installed properly...

  Give us more details on how we can talk about pc and what happens, you get the bing connecting xp, y at - it none exclamation in Device Manager, all error messages, the size of the disc etc etc...

• 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.

• If win 2003 is upgraded for the 2008 edition, it will fix alingment compensate for the problem with the SAN disks?

  If win 2003 is upgraded for the 2008 edition, it will fix alingment compensate for the problem with the SAN disks?

  Hi elvirkaric,

  Your question in Windows Server 2008 is more complex than what is generally answered in the Microsoft Answers forums. It is better suited for the IT Pro TechNet public. Please post your question in the TechNet Forum. You can follow the link to your question:

  http://social.technet.Microsoft.com/forums/en-us/w7itproinstall/threads

• San Disk Extreme 64 gb [new Version].

  I just ordered a San Disk 64 GB [NewVersion] Extreme. Is this a fixed or removable drive? I'm hoping removable. I have, I think this product is exFAT formatted factory, right? Are there any draw backs exFAT? Thannk you for your response. Newatthis

  Prons and cons of exFAT?

  Google does not work for you?

  This should help: http://en.wikipedia.org/wiki/ExFAT

  exFAT manages large files more than 4 GB, without the expense of NTFS journeling.  Better suited on a removable media disk hard but can be used for both.

• My camera a San Disk SDHC is full. You want to re - use? Need simple directions.

  Hello

  My camera San Disk SDHC card is full and I would like to re - use.
  I need simple instructions on how to scrub clean for re-use
  I do not have old photos. Can I reformat it or how
  I would remove the old photos to so I can re - use the card?
  step by step would be helpful.
  Thank you.

  Hello

  Your camera software will be instructions on erasing the internal memory of the device, or in your case, the external memory (map)

  See you soon.

• Nothing happens when I insert a San disk in the drive

  Original title: JONANDERSON_703
  When I insert the San disk in the drive, nothing happens.

  Hi JOHNANDERSON_703,

  Welcome to the community Microsoft and thanks for posting the question.

  According to the description, it looks like your San drive is not getting recognized in Windows Vista.

  He would be grateful if you can answer this question in order to help you further.

  1. have you made changes on the computer before this problem?

  2 is the issue limited only when connecting San drive?

  3 is the another USB device works fine?

  4. do you get any error message or connection error code car san?

  I suggest you to see the steps in the following Microsoft article and check if it helps.

  My drive does not appear in Windows Explorer: http://support.microsoft.com/kb/330140

  Note: Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click on the number below to view the article in the Microsoft Knowledge Base: http://windows.microsoft.com/en-US/windows-vista/Back-up-the-registry

  If you need Windows guru, do not hesitate to post your questions and we will be happy to help you.

• What are the causes of sd/mmc instead hired san disk

  Card SdHC (San Disk) used to store images from digital camera, when inserted the green light turns on but does not work

  visible on e-machine network (vista 32) system. What are the causes of sd/mmc slot is not to detect the san disk.

  Hi mrpitiful,.

  ·         Is it a laptop or a desktop computer?

  ·         You have built in card reader if it a laptop?

  Check to see if the following is useful.

  Method 1: If you use an external card reader, then try using another.

  Method 2: See the following SanDisk article if it is an internal card reader.

  Computer (with internal card reader) or a digital camera fails to read 4 GB, 8 GB, 16 GB, or 32 GB SDHC card

• 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

• How anyone SAN disk of multiple ESX hosts?

  Dear all,

  We presented several SAN drives to a few servers ESX 4.0 memory of EVA.

  As one of the SAN is not necessary now, we want anyone there.

  It is also confirmed he does not need to keep all the data in this SAN disk, would you please indicate the steps to this end, but no need to shutdown ESX servers?

  In fact, I tried to study the following document, but it is too difficult for me. Help, please.

  Unpresenting a LUN that contains a store of ESX 4.x and ESXi4.i data

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1015084

  Kind regards

  Tommy

  what you need to do is really, make sure the logic unit number is empty, remove the LUN of your stocks of VI.  From there, ask enterprise to after LUN storage team.  When they have been the team of storage upnpresented, rescan your storage adapters, and logical unit number should not be more visible to your VI.

• The disk performance hard OS ESX influences the performance of ESX somehow?

  Hello

  Does the OS ESX (e.g. hard disk performance

  between SATA and SAS) affect the performance of the ESX somehow?

  (To clarify, I wonder about the hard drive that ESX is

  installed, not the hard drive that are the VMFS volumes).

  This information will help us determine if the benefit of

  faster disks to the ESX operating system outweigh the additional costs.

  Thank you!

  John

  Welcome to the Forums - there are two parts that the local disk speed will affect perfomance - during the startup of the ESX host, it will delay the start of the server ESX - the other begins as others have said if you do not set / the effective Service Console - what needs to be done to ensure your service console is configured approriately.

  1. Sevrice console the maximum value of 800 MB memory - which is then installing ESX you set space swap to 2 x 800 or 1.6 - GB

  2. When accessing your virtual machines using RDP or SSH, this will reduce the load on the service console

  3. Minimize running them something extra in the Sevrice Console-

  If you find this or any other answer useful please consider awarding points marking the answer correct or useful

• How to locate the fiber channel SAN disks on the ESX Server

  Hi all

  Please help on this

  How to find and configure the fiber channel SAN disks on the ESX Server

  Concerning

  Vijay

  Assuming that you have configured LUNS on your storage space itself you will need to ensure that the ID in the world of fiber HBA on the host ESX (you can see them registered against fiber HBA under storage adapters, WWID) are configured on the switch of fiber access (read and write).

  In the VI Client connected to your ESX host, select the storage adapters tab and highlight the Fibre HBA. Right-click and select Rescan. If you have correctly configured the SAN and the Fibre switch, then the LUNS now appear under the fiber HBA. Go to storage and select Add storage. Follow the wizard through to add LUNS and VMFS format. Do this for each ESX host that you want to see the LUNS.

  If you found this helpful, please consider awarding points

• Acceptable DELL PS4100xv and SAN HQ disk performance

  Hello

  I have a Dell PS4100xv with 12 x 600 GB 15K SAS drives configured in RAID 6.

  3 three R420 servers are connected via 2 x Power Connect 6224 (bunk).

  I'm under ESXi 5.1 U1 with a mixture of SQL virtual computers, file servers, and Proxy servers.

  What are the acceptable values for a healthy EQL in terms of latency, disk queue, Ops ARE / s and etc?

  Just recently, I transferred a virtual machine to the PS4100XV. The virtual machine has a very slow behavior when using the EQL Dell. This is SQL Server. You have a lot of users complaining about the sluggish behavior.

  I need to determine if I have a problem on my PS4100xv in terms of performance before you start to troubleshoot the VMs and ESXi hosts.

  These are values measured HQ SAN during the last eight hours.

  If I got this right that my own analysis

  • The disk queue is ok, since its constantly @ 0. EQL can handle the load and nothing is pending.

  • IOPS / s is ok, because the base on the RAID my table evaluator should support 1500 IOPs. Current reading is 742 IOPS / s only.

  • To write latency is ok because he is 13 Ms and does not even approach 20 ms.

  • Latency of reading, I have a problem? It fits above 20 Ms flat around 25 ms to 40 ms.      But not more than is not 40 ms.
  • For the size of the IO rate & IO, I don't know if that's a good indicator. What are the acceptable values?

  Disk queue depth:	zero (0), the graph shows his dish to zero.
  Average READ IOPS:	625
  Average WRITE IOPS / s:	117
  Total average IOPS / s	742
  Latency average reading	30 ms (ms 20 to 40 ms)
  Average latency of writing	13 ms (straight line @ 13 ms)
  Weighted average	28 ms
  E/s average rate readings	26.41 MB/sec
  Writing of average IO	2.26 Mbps
  Total	28.67 MB/s
  Average size of READ i/o	43,30 KB
  Average size of i/o WRITE	19.91 KB
  Weighted average	39.62 KB

  There is no retransmission of packets and the network usage is only 3%.

  Would really appreciate the input and recommendations.

  What are the acceptable values for a healthy EQL in terms of latency and IOPS / s, queue disk, etc.?

  Thank you

  Paul

  I strongly suggest you open a record of support on any show of related issues.  However, with ESXi especially when I see low i/o + latency, the first thing I usually find is that DelayedACK is enabled.  Sometimes, large receive the unloading (LRO) can do that as well.   Another common problem is not optimize MPIO.  And not not not using Round Robin with 3 IOs by path from the default value of 1000 IOs.  Or if you have a company or business license + installation Dell EQL MEM.   Sharing also several VMDK with one card virtual SCSI inside each virtual machine is another cause of latency.   Each virtual machine can have up to four 4 virtual SCSI adapters.  With a single adapter, single VMDK (disc) can be active at a given time.  If an operation of e/s on the "C:" drive will block your SQL disks.

  This link is a PDF that will show you how to fix common incorrect configurations with ESXi + EQL.

  en.Community.Dell.com/.../20434601.aspx

  HOWEVER.  If you find delayed ACK is enabled the process described here probably won't be enough to solve the current connections.   With the mode node maint.  Remove the address of discovery EQL, remove the "Static discovery" entries EQL volumes.   Restart the node.   Add discovery addresses but NOT yet rescan.  Make sure that login_timeout is 60 years old, DelayedACK is disabled.   Then make the new analysis.

  Kind regards

• HP 14-r025tx: what is the maximum size of hard drive I can replace my default one? & other hard disk performance issue

  My default hard disk is almost full and I plan to update. What is the maximum size that this model could overcome? Very well is 2-3 to?

  Another question.

  I replaced my optical drive to a box with a 250 GB SSD HARD drive inside. I installed my new operating system here, and makes the default boot drive. The default value of HARD drive that comes with the laptop is my backup drive. This is configured by okay?

  or

  Do I have to put my SSD on the default HARD drive space and put my 2 to/3 TB harddrive on the caddy for maximum performance?

  Hello

  1. in theory, you can get 2 TB or TB but 1 TB has better peformance.

  2. you cannot boot from the caddy. My suggestion: use for normal Bay and 2 TB SSDS in the caddy. You both what you want.

  3. as (2) above.

  Kind regards.

• Performance data store local vs fiber SAN disk IO

  I'm looking for a table of comparison of performance or other documents that will give me the change in the performance of the disk i/o for virtual machines that are hosted on local data warehouses vs fiber attached LUN.

  Does anyone know where I might be able to find this information?

  (HA, DRS and VMotion are not at stake here).

  Thank you.

  You won't find that.  There is NO way to give a comparison that you are comparing apples and screwdrivers, they are not the same family.

  SAN's storage shared, managed by a central unit full time on a fiber infrastructure.  But it depends on your switches fiber, HBA, your configuration, the disks in the SAN, the manufacturer of SAN, speed of the disks, the number of disks... It goes on and on.

  Each SAN / fiber / Configuration is very different.

  Local storage depends on the RAID configuration, manufacturer, your RAID card, disks... once again more info that can be included.  The line at the bottom is Local disk can be more responsive at times, but since you are limited to the number of disk (6 or 8) are limited to the performance, but the flow is the key.

  You will get a FLOW much more fiber than the local disk.  More load, less stress (since he is not relying on the local system to provide the resources AND the host operating system).

  SAS is better than SATA for the case of all VM on both systems.  so keep that in mind.  It is also very important to comparative analysis.  IOmeter will help you determine what is best for you.