Write cache active warnings?

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• Tecra A9: HARD drive write Cache does not work

  Hello!

  When I try to activate your hard drive write cache, it does not work:
  I can check the box and press OK, but when I go back to the dialog box the box is unchecked.
  The event log shows a warning: "the driver disabled the write on the device \Device\Harddisk0\DR0 cache.

  This slows down my laptop. I don't want to work without the write cache.
  What can I do?

  Greetings,
  Christian

  Hello

  did restart you your machine after checking the box? Usually, you must first reboot the system when certain changes.
  On the other side, you know this microsoft article? You should read:

  http://support.Microsoft.com/kb/332023

  This could probably explain why windows leaves the box unchecked...

  Welcome them

• The disk of light and SDS Cache activity

  I have a relatively new W530 with the installed at the factory 16GB drive HARD drive cache and the ExpressCache software (working properly according to the Lenovo-recommended test). I want to know if the drive activity light shows HD activity only or also SDS hides.

  My observation is that for a long time the drive activity light is on permanently. The first time that this has happened, the warranty support told me that the HD failed and sent me a new. (They don't seem to know anything on the internal tables of health HD I thought existed and could be interrogated with a special software). Anyway, this seemed to solve the problem for a few months, but it is recurring lately.

  Looking again at the Task Manager/Performance tab/Resource Monitor tab / Disk, I can see that the larger disk of the user's ExpressCache service (as it was the first time). I stopped this service and set it to manual, and the constant activity stopped shortly after. He has not re-emerged in the last hour or two. Although the light is off now (for the most part), I still don't really know what that means; the first question remains...

  No matter what light you can pour on the light function (no pun intended) disk activity would be appreciated! -JCW2

  
  

• New installation of SQL Server, disable the write cache?

  Hello, I'm under ESXi 5.1 and I need to configure a virtual machine Windows server 2012 for our first virtual SQL Server.  My database guy tells me that I have to disable the cache write for SQL best practices.  Is it always true when it is a virtual machine?  If it is true where would I turn it off?  To add a bit more info about our storage on a network SAN Dell EqualLogic and we will use SQL 2008 as SQL 2012 is not yet supported.  Thanks for the help!

  I think that your SQL guy assumes the ESXi host will be caching on its own transparent for the VM by default. This is incorrect, ESXi does nothing like that.

  The only place where caching of write i/o can happen is on the side of physical storage outside ESXi, so in your case the SAN controllers (no reason not to have this license here too long as it is on battery/flash) or the discs themselves (ugh, it is never enabled by default for a good reason).

  BTW: I'm pretty sure that SQL 2008 is not supported on Server 2012.

• Acquire the lock slider get write without activating transaction

  Hello

  I just found out that grant read BDB cursor locks get API instead of write lock. I tried to use the DB_RMW flag to get the write lock initially, while it didn't. The flag of the environment is DB_CREATE | DB_INIT_MPOOL | DB_INIT_LOCK. While I don't want to overload due to the transaction, is there a way to do this?

  BDB does not support this kind of block mode Data Store.

  Thank you

  Mike

• 'remove all cookies', cleared CACHE & CONNECTIONS ACTIVE, and yet I "don't need to log in Facebook!

  I deleted all cookies,
  Cleared CACHE, ACTIVE CONNECTIONS and DATA from the WEB site offline
  Yet I "is no need to log in to Facebook.

  It was that I always needed to log in to Facebook after you delete all the cookies.

  alscotch said

  I killed Firefox (something I do frequently, followed by SESSION RESTORE) so, no, I never left the GAME. But if THAT is not automatically connect u - this will be?

  The history of session file stores session cookies. If cookies for HTTPS sites are available depend on your settings and if Firefox through a clean shutdown.

  Assuming that Firefox normally stops:

  • If you have Firefox configured to start with your windows and tabs from your previous session, cookies for HTTPS sites are stored in the file. This provides the most seamless experience.
  • If you have configured to start with a blank tab or the Firefox homepage, cookies for HTTPS sites are removed from the file. Because you will not necessarily restore perfect, it offers greater security.

  But in an accident, there is no cleaning of the judgment.

  To block Firefox to save cookies to HTTPS sites in the historic session file, you can try to change a setting here (I say try because that in an accident scenario, you still may be these cookies in the file, I have not tested):

  (1) in a new tab, type or paste Subject: config in the address bar and press ENTER. Click on the button promising to be careful.

  (2) in the search above the list box, type or paste sess and make a pause so that the list is filtered

  (3) double-click the preference browser.sessionstore.privacy_level and change from 0 to 1 (zero records HTTP and HTTPS, 1 saves only the HTTP protocol when you close Firefox).

• Hard drive constantly activity led blinking - new WIN7 Ultimate Dell PC

  I've been solving this problem and for weeks on my new WIN 7 64 Ultimate Dell XPS 8000 (I7 - 860 1 TB HD 8 GB of Ram).    Looking around for a found many recommendations and a couple of issues resolved, (more unresolved), but none of the recommendations has helped me.

  I had the feeling that it is perhaps a Dell-specific question, but I had no answer in the Dell forums.   I don't know if I call the Dell technical support, all I get is recommendation to return to the factory default.  No thanks!

  I disabled all the suspects, at least temporarily to see if it has an effect:

  Indexing of Windows & research
  Windows Firewall
  Windows Defender
  System restore
  Remote differential compression
  Windows Fax & Scan
  SuperFetch
  Sea port

  With all these off, flashing was much less busy, but there was still a steady pulse of the blink type.   I have since the Defender reactivated and restore the system.    (Even if they were to blame, it is almost a solution/workaround acceptable!)

  I studied the disk activity in PERFMON, and there is an occasional activity of nucleus and the recording of events.  I took a few shots of window I can post (if I can figure out how).   I also have a HijackThis log.

  Sometimes the PERFORMANCE of disk activity monitor window is empty but still the light continues to blink!  huh?

  I did not disable Hibernate (there was a suggestion somewhere he could play a role).  I use it regularly.   But I can try that too, you think it might help.

  I'm at my wits end and a bit overwhelmed by all the data in order to study and seek.  I hate diddling with the services and the registry, fearing to wet my head and creating a mess that I can't get.

  In addition, there is no additional security software and I haven't installed everything preinstalled trial crapola.

  Help!

  I'll post the hijack this log in the next post

  Updated to clarify: what I reported above is essentially on the out-of-the-box behavior... not or associated with CPU-bound application. The system was fairly clean with an installed extra software/hardware minimum.

  Hard drive blinks quckly because Microsoft made what is called something like Write Cache Flushing flushes written disc that maybe in this cache on the disk?  Simple.

  The reason is... If you have a power failure... you lose this memory data cache and/or corrupted something that may be important.   Also taking a hit on the drive's performance and life expectancy.  If some experts say.

  If you have a battery backup... or most laptops with a battery can... Turn it off!

  .. In Device Manager, the properties of the hard drive has usually a checkbox to activate cache of writing... and some will have another check box...  Disable Microsoft Write Cache Flushing.<  add="" a="" check="" to="" that="" guys box...now="" look="" at="" your="" non="" very="" often="" blinking="" hdd="" light... works=""  same="" with="" some="" of="" the="" dvd/cd="" drives, same="" controllers="">

• Beginner jQuery is having trouble with the links and the page redirect and page caching.

  Hi all

  I'm trying to update an old legacy of multipage site (each page has headers html etc.), adding jQuery Mobile. Most of the time it goes well, but I'm having some problems with the links, the redirect of the page, and caching.

  I write javascript like this...

  < script >

  -do things - then-

  Window.Location.Replace ("Page1.html");

  < /script >

  and links like this

  
  

  < a class = "-ui ui-btn-b btn tsize1" href = "page2.html" rel = "external" > page 2 < /a > "

  
  

  CACHING ISSUES

  
  

  On many pages - such as those that I have problems with, I've added no caching of code as...

  < head >

  < META HTTP-EQUIV = "Pragma" CONTENT = "no-cache" >

  < META HTTP-EQUIV = "Expires" CONTENT = "-1" >

  ... more...

  < head >

  Problem: for example, I can go to Page 1 and click on a link to go to page 2 and page 2 has the lines "no cache" header. The problem is that a fresh change of page 2 does not appear even with no cache lines above and even if I hit refresh in the browser that I thought it was supposed to reload the page (live get of the site). On the contrary, it seems to continue to see the old content before the update.

  In another case I could be on page 21 and click on a link that goes to the publicationfootnote22 and made a few treatment database and then goes to the page33. In this case, my fees top22 updates are not appearing and showing just the old cache data.

  Q: what is the best way, at least while I am writing code, to force the Page to refresh (non-cache), I can see my updates all the time, because otherwise it becomes very confusing because I'm sure you know.

  Thanks in advance: Dave

  Hi Dave,.

  Are you handy with your developer tools? It's always where I head when I need to look inside something. Before getting anywhere in addition or developed, check the response code you get for the page request and see what is the numeric code. If it is 200, you get a new copy. If it is 304 then your browser is striking the same content or something in your UI is to preserve the previously loaded document fragment.

  Photos make it easy, Chrome this is grabbing a small page for the first time and with disable cache enabled, and we get the status code 200:

  

  If I keep refreshing with "Disable cache" activated so I keep getting GET/200, copy fees.

  However, delete the "disable cache" to speed things up and the server and the client negotiate and check if she even needs to send you the document (if she thinks she's changed), and if not, of course you GET/304, or "load cache:

  

  Whenever I update I get GET/304, hitting the cache.

  Make sure your requests are GET/200 if you expect not to be cached.

• HARD drive with memory cache 64 MB or 128 MB cache?

  If I missed this info on the page of tweakers so someone must fly SA and throw a keyboard on my face because I looked! Yes, I did!

  I was 99% decided on my new PC build when my it provider by e-mail at reduced prices on Seagate Constellation 4TB leads with 128 MB of cache, against the other 4TB readers I considered as having a 64 MB cache.

  This cache is how beneficial when it comes to a video editing multicamera and calibration of effects/color overlay? It's a little more expensive and research, I quickly made, it seems that it is not worth the thousand additional (or one hundred, in terms of dollar...) so please could someone explain the advantages/disadvantages? Thank you!

  More cache is better of course, but I suspect that you would be difficult to see any difference between to 4 disks with cache of 128 MB 64 vs.

  Windows caches too your activity by car and you have gigabytes of RAM to work with, not only of megabytes.

  For the first time, you want to run fast and risky:

  -Right click to file on a drive letter Manager to obtain the Properties dialog box

  -Select the Hardware tab, select your drive and click Properties

  -Select the policies tab

  -Select 'Best performance' (default) for removal policy

  -check the "Enable write cache on the device (default)

  -check the "turn off Windows write hot flushes buffer cache" (default value is not checked)

  Jim

• Write delay failed unable to save all the data for the file $Mft

  Have a frustrating problem.  Help is greatly appreciated.  Learned the hard way and lost a dwg important issue which was unrecoverable.  Bought a new drive external hard seagate.  Could not back up the entire system with software pre-installed.  Download acronis true image home 2011.  Tried to backup system.  Receive error when trying to backup messages; 'Delay to failure of Scripture; Reading of the sector; Windows was unable to save all the data for the file $Mft. The data has been lost.  Have tried many fixes.  Unable to disable write caching method (grayed out / unclickable).  Played regedit 'EnableOplocks' is not listed to select.  Attempted to run microsoft 'fix it' and got the blue screen of death.  Short hair out of my head.  Suggestions appreciated.

  I don't know where Microsoft 'Technical support engineers' get their information.

  Write caching without a doubt "does apply to external hard drives", but it is usually disabled to prevent to sort the problem you are experiencing.

  I've seen several positions reporting to the same question that you do.  All of these positions were with SATA drives.  Is your Seagate eSATA drive?

  The disc is recognized as an external drive in Device Manager?  In Device Manager, go to the drive properties dialog box and click the policies tab.  An external drive should have two options: "Optimize for quick removal" and "Optimize for performance".  An internal hard drive shows the options as gray (with 'performance' selected), but there should also be a checkbox "Enable disk write cache" under the second option.

  What shows in your policies tab?

  If I understand correctly, "writeback" or "write behind" is implemented by disc material or its pilot.  If the option is not available on the drive properties > policies tab, I would suggest to contact Seagate support.

• XP SP3 reinstall slower computer performance, a lot of hang ups, delayed write failed and bsod.

  Hi everyone;

  Thank you all very much for putting time and effort to help as many people. I thought I was opening first with a receipt.

  I'm very tired on my computer. I already spent days and days trying to solve a lot of questions. Literally, my computer has been hindering my work since the middle of January!

  I have a Dell Dimension 4700 Intel Pentium 4 CPU 3.00 GHz 2.99 Ghz and 3.25 GB of Ram, with a Hitachi 500 GB HDS721050CLA362 as the main disk (Disk0) and a Seagate 1 TB ST31000528AS secondary storage (disk 1) with Windows XP SP3 disk. I have insalled all updates (including frame work 1.1 windows.net, 2 something etc).

  I have avast antivirus and it is always kept up to date as well as ad-aware and anti malware malbyte.

  I recently bought a BlacX Thermaltake Docking Station and 2 TB Hitachi 3.5 car as well. I try to have 2 backups of my work, because I lost valuable data in the past.

  Initially, I had only 2 GB of Ram, but I knew that my computer could handle 4 GB because I have confirmed these specifications with the people of Dell who assembled to the machine. Right now I have 4 GB of ram, as confirmed in the menu setup.

  I also originally had a Maxtor 80 GB disk0 and disk1 No.

  I opted to replace the Maxtor 80 GB because it is 6 years old already and I run Adobe CS4 production Premium. I thought that 500 GB would suit my OS & important programs and large temporary files that they generate.

  When I reinstalled the operating system on the Maxtor I had formatting problems. It hangs at 94% or I would get a BSOD on start up. Then I used the 500 GB HDD and ran the Installation of XP on it and was fine.

  I used it for a week, but I noticed his incredibly slow, despite having all this ram and a clean operating system installation.

  I am also BSOD when I launch the antivirus OR when I try to copy files from one HD to another (of the primary transmission on the slave drive OR the disk from 2 TB to dock, or from disk on the drive connected slave or the slave on the primary drive drive). Other times I'll take an absurd copy for a file time relatively small i.ye. a 300 MB file will suddenly be more than an hour to copy.

  I have run diagnostics and diskscan and receive nothing wrong. Windows finished 'control' the disc and not tell me that something was wrong. I look at the disk management tool, and all readers "(healthy)" next to them.

  The skeptic in me feels like this happens when I install the updates of the .net framework. I already reinstalled OS two times.

  Isn't .net important features of the machine?

  I'm so lost in this and I spend most of my days Googling solutions and try to implement them without result. I've disabled "write cache" and reactivated it. I went through a bunch of procedures aimed at preventing the failure of writeback. I do not have any type of file sharing software or torrents on my machines at all and I do not share my files. My firewall is on.

  All that I know, I did everything by the book and to the letter, so I feel like my computer could run surprisingly, not like I have a lemon and I'm terrified that I'll lose all my work despite the fact that I have enough space to save all of the universe.

  Thanks again for all your help! It is really appreciated in advance and always.

  PEI

  I ended up reinstalling the operating system again, it works fine now. But it was very very weird. Thank you very much to try to advise me, I know that it was a complicated issue.

  See you soon
  PEI

• mSATA SSD as cache

  Hi, guys.

  I'm debating getting a mSATA SSD. Is it possible to to use as a cache for the hard drive, rather than as a boot device, a concept similar to Intel's SRT? What software does take?

  Caching is read-only, but reduces the beating disk significantly at startup and when congested.

  ROMEX has FancyCache which provides the full read/write caching:
  http://www.romexsoftware.com/en-us/fancy-cache/

  I do not trust caching of the Scriptures, good things.

• Vista fails to recogniseiHAS324 internal dvd/cd writer

  a friend built a new tower for me with vista, but the writer, although active, is not save to my computer or function when a disc is loaded.

  http://support.Microsoft.com/kb/982116

  http://support.Microsoft.com/mats/cd_dvd_drive_problems/en-us

• Question about PERC H330 write speed:

  Hello. We just got a Dell PowerEdge T330 with 4 x 120 GB SSD in a RAID10 configuration.

  A ran an ATTO Benchmark and worry about the shown writing speed the image below.

  Parameters or settings to change that?

  FYI - the SSD are Intel DC S3510 Series (6 Gbps)

  

  Hello

  HOMERSlMPSON

  Parameters or settings to change that?

  The write speed seems normal. I don't know what your expectations are.

  The H330 has no write cache. Any RAID array you create will have raised. This overload causes readers to write more slowly as if they were not in a RAID array. If you need to improve performance, then I suggest that you upgrade to a H730. The H730 has write cache and should not interrupt the flow of data. He is able to cache these data instead of making a break and unpausing.

  Thank you

• Slow writes PERC H700 and Samsung 850 PRO SSD

  I saw several posts about this, but don't see a solution.

  I have a few servers R710 with H700 controllers. I have installed Samsung 1 TB SSD Pro 850 and see writing very slow compared to other performance SSD tested in one box, simply slow in general. SAMSUNG SSD are ~ 500 MB/s in both sense when connected to the stand-alone desktop computer, but ~ 500 MB/s read and ~ 45 MB/s, writes when it is connected to a server.

  1. 1 x SSD in RAID 0 - no redundancy, just to test the performance. I tried all combinations of memory cache writeback and read before possible setting (enabled, disabled) and has never had more than ~ 45 MB/s, writing.

  2. 6 x SSD in RAID 5 with all possible combinations of never getting write cache over ~ 110 MB/s, writing.

  3. 6 x SSD in RAID 10 yet one time all possible settings of the writeback cache - ~ 140 MB/s.

  Finally, I installed 120 GB Intel SSD and got more than 400 Mbps in both directions without worrying about the RAID or cached.

  What is the problem with the H700 and Samsung SSD controllers? No one knows how to fix?

  Any other R710 compatible controller, which do not have this problem? Might be able, JBOD? I also tried a stop the controller PCIe Board without a bit of luck (bottom of basket or any compatibility issues)

  Thanks in advance.

  P. S.

  The controller is a latest firmware and the BIOS and other components. Used Dell Repository Manager iDRAC discovery and the ISO bootable to update everything.

  SAMSUNG SSD are on a latest firmware as well.

  Hello.

  The Samsung 850 Pro SSD are not validated or certified to work with controllers from Dell, and as such, there is an incompatibility of communication between readers and the controller at the firmware level. Thus, you are required to achieve the unexpected poor read and write performance regardless of the controller cache settings. Consider using Dell certified readers.

  Thank you.