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  • Can't find onboard NIC with windows server 2008

    - by Sanarothe
    Hi. I'm trying to setup a windows server, but I can't seem to get it to install ethernet drivers :( motherboard is ms-6743 chipset 82865g/pe/p(intel) The MSI drivers specifically for this motherboard are bad links. Not surprising... MSI is rarely helpful. Sisoft Sandra doesn't see any network devices, and all of my leads to drivers have reported that there is no network adapter to install a driver for. The light is ON on the mobo, the onboard setting in bios is ON and the computer worked just fine with a standard install of windows 7 about a month ago. I don't know what to do :(

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  • Server Restart's and Respective Orders

    - by TheD
    EDIT:Not meaning to be disrespectful to any of the answers, but, the main question was whether rebooting a DC at the beginning of a cycle, then all the other servers, or rebooting it at the end once all the others are back online - is there a reason for doing it either way? I'm still not sure based on current responses. This will most likely seem like a fairly, maybe even stupid, question, but it's something I have been wondering about. As part of a regular process for clients servers are restarted remotely after patches and every client tends to have a similar order - but there always seems to be a small debate when it comes down to when do you reboot your DC. For example, 4 servers, 1 DC, 1xExchange, 1xBESX and 1xRandom, lets say it has some CRM software installed, is it best to reboot the DC first, then Exchange, then BESX and so on - or reboot all the servers, then reboot the DC last? - Perhaps it doesn't matter at all and it's just a case of how you have always done it. Would it change in a Hyper-V environment for example, with a physical DC, 1 VHost with all your servers virtualised on that Host? Rebooting the VHost and Virtual Machines first, then the DC at the end, or vice versa? Thanks!

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  • How can I recreate root dnsNode objects and their RootDNSServers folder in AD after they are deleted?

    - by TonyD
    A few days ago I was trying to permanently remove root hints from my DNS server. After much ado, I decided to go a different route and am now trying to put everything back as it was. During the original process, I opened ADUC, clicked ViewAdvanced Features, and then browsed to System MicrosoftDNS and deleted the folder RootDNSServers. Now in ADUC, I cannot create a folder here to replace the one I deleted. I can run adsiedit and load DomainDNSZones for my domain. Under there, I see MicrosoftDNS, RootDNSServers, with all of the objects still inside of it. Is there a way for me to undo what I did? Can I recreate these objects in ADUC? Can I do something else to cause them to show back up there? Thanks!

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  • Managing SQL Server users via Active directory groups

    - by hyty
    I'm building SQL Server instance for reporting purposes. My plan is to use AD groups for server and database logins. I have several groups with different roles (admin, developer, user etc.), and I would like to map these roles into SQL Server database roles (db_owner, db_datawriter etc.). What are the pros and cons of using AD groups for logins? What kind of problems you have noticed?

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  • Sql Server database logs "missing"

    - by linkerro
    Here's the problem we're having: In the applications that are using the databases we get errors like: The log for database 'redactedDatabaseName' is not available. Check the event log for related error messages. Resolve any errors and restart the database. Cannot close event log because there are still event handle users active. The server log says this: Error: 9001, Severity: 21, State: 1. Context: The server in question is holding databases for a multi-tenant application and lately it's been under quite heavy loads. It has something like 3k small databases on it and these errors have been coming in the last week. We have a work-around right now, which is taking the database offline then bringing it online again. Any ideas why this is happening and how we can fix it?

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  • Windows Server 2008 R2 time keeps changing unexpectedly

    - by lmhost
    There is a serious problem with one of my servers time. At some random hours (5:59 localtime in the following example) it goes 1 hour back and keeps doing this again and again next times it reaches 5:59. Like this: 5:59-4:59 … 5:59- 4:59 and so on. It stays in the loop until I manually update its time. The server OS is Windows 2008 R2 Standard x64, acting as a standalone web server on the internet. time zone (UTC-05:00). system log: Information 4/13/2012 5:59:34 PM Kernel-General 1 None Information 4/13/2012 5:59:34 PM Kernel-General 1 None Information 4/13/2012 5:59:34 PM Kernel-General 1 None Information 4/13/2012 5:59:34 PM Kernel-General 1 None Information 4/13/2012 5:59:34 PM Kernel-General 1 None Information 4/13/2012 5:59:34 PM Kernel-General 1 None all of the above entries have same content: The system time has changed to ?2012?-?04?-?13T21:59:34.500000000Z from ?2012?-?04?-?13T22:59:34.500000000Z. Details XML View: - <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> - <System> <Provider Name="Microsoft-Windows-Kernel-General" Guid="{A68CA8B7-004F-D7B6-A698-07E2DE0F1F5D}" /> <EventID>1</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000010</Keywords> <TimeCreated SystemTime="2012-04-13T21:59:34.500000000Z" /> <EventRecordID>4060</EventRecordID> <Correlation /> <Execution ProcessID="4" ThreadID="80" /> <Channel>System</Channel> <Computer>********</Computer> <Security UserID="S-1-5-18" /> </System> - <EventData> <Data Name="NewTime">2012-04-13T21:59:34.500000000Z</Data> <Data Name="OldTime">2012-04-13T22:59:34.500000000Z</Data> </EventData> </Event> Any idea about what’s going on? Thanks

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  • Cannot WMI Query root\MSCluster namespace as Local Admin

    - by Matt Zuberko
    I'm trying to use WMI Explorer to query the root\MSCluster namespace on various hosts to obtain cluster resource group and resource object data. I can access the namespace with no issue on Win2K3 cluster nodes but am getting an access denied error attempting to connect to Win2K8 and Win2K8R2 nodes. I can access the root\cimv2 namespace with no issue, just the MSCluster namespace even though I am a local Admin. Is there a feature setting, local security policy or server role I have to be a member of to access the namespace? Thank you!

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  • Very large log files in IIS 7.x

    - by Neal
    Hello, I had a site stop working today and when I RDP'd into the server I saw a warning about low disk space. The first thing I checked was the inetpub folder where the log files are stored and sure enough it was huge, 40 GB huge. I do clean the files monthly but what is causing a day's worth of logging on a medium activity site (www.vbdotnetforums.com) to create 300-500 MB log files? I do have everything being logged so my SmarterStats software gives me the most info, but are there specific things I should/can turn off that is causing the most growth in these log files? Also, sure would be nice if Microsoft someday had some sort of log file management such as deleting log files after they exceed a certain size (total), X days, etc. We all have to come up with some solution to delete the old ones manually. Thanks Neal

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  • Why do clients on Branch Sites insist on accessing SYSVOL on the HQ DC instead of the branches' RODC?

    - by pepoluan
    I'm still scratching my head over this situation... You see, we have 3 RW DCs in the HQ, and 1 RODC on every branch sites (50+ locations). During startup, a script will pull in some files from \\example.com\SYSVOL\example.com\Common\Data But we have been experiencing bandwidth overload. A traffic analysis indicated that lots of clients in the Branch Sites were trying to access the SYSVOL located in the RW DCs. E.g.: If the RW DCs are 10.1.0.15, 10.2.0.15, and 10.3.0.15, and site 'X' has a subnet of 10.27.0.0/16 (with its RODC at 10.27.0.15), clients at site 'X' seem to insist on accessing \\10.1.0.15\SYSVOL or \\10.2.0.15\SYSVOL or \\10.3.0.15\SYSVOL; they seem to be ignoring the RODC completely. What is going on here? Where should I start investigating what went wrong? BTW, I'm already using DFS-R, and replication have been going on successfully; I can put a small 'canary' file on one of the RW DCs, and within minutes all the RODCs will have successfully replicated the 'canary' file.

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  • Windows 2008 running as KVM guest networking issue

    - by Evolver
    I have a strange networking problem with Windows 2008 server R2, running as guest under KVM-Qemu host. Host is CentOS 6.3 x86_64. It's network settings: # cat /etc/sysconfig/network-scripts/ifcfg-br0 DEVICE=br0 BOOTPROTO=static BROADCAST=xx.xx.xx.63 IPADDR=xx.xx.xx.4 NETMASK=255.255.255.192 NETWORK=xx.xx.xx.0 ONBOOT=yes TYPE=Bridge # cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 HWADDR=xx:xx:xx:xx:xx:xx ONBOOT=yes BRIDGE=br0 IPV6INIT=yes IPV6_AUTOCONF=yes # cat /etc/sysconfig/network NETWORKING=yes NETWORKING_IPV6=no HOSTNAME=my.hostname GATEWAY=xx.xx.xx.1 # cat /etc/sysctl net.ipv4.ip_forward = 1 # tried to set it to 0 without any changes net.ipv4.conf.default.rp_filter = 1 # tried to set it to 0 without any changes net.ipv4.conf.default.accept_source_route = 0 # tried to set it to 1 without any changes kernel.sysrq = 0 kernel.core_uses_pid = 1 net.ipv4.tcp_syncookies = 1 net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0 kernel.msgmnb = 65536 kernel.msgmax = 65536 kernel.shmmax = 68719476736 kernel.shmall = 4294967296 # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface xx.xx.xx.0 0.0.0.0 255.255.255.192 U 0 0 0 br0 169.254.0.0 0.0.0.0 255.255.0.0 U 1004 0 0 br0 0.0.0.0 xx.xx.xx.1 0.0.0.0 UG 0 0 0 br0 Node IP is xx.xx.xx.4, guest IP is xx.xx.xx.24, both host and guest is in the same network (/26). There are several linux guest running fine on the node (centos, debian, ubuntu, arch), and even Windows 2003 x86 also running fine. But Win2008 does not. I wonder, what's the difference. From Win2008 guest I can ping nothing: neither gateway, nor any other IP, even they are in the same subnet. From outside I also cannot ping guest. Almost. If I ping it from another server in same subnet, it's barely pinging, losing more than 90% packets. Firewall on the guest is completely off. Tried to set up network manually as well as via DHCP without success (BTW, DHCP set up network settings correctly). I suspect that is a kind of routing problem, but I spent whole day and still cannot figure it out. I would be appreciate for any help.

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  • Instantiating COM object hnetcfg.fwpolicy2 on Remote Server

    - by Pavan Keerthi
    I locked my self out by inadvertently changing RDP firewall rule to use IPSec,but without completing proper steps to setup IPSec channel from my laptop to server. Luckily all wmi remoting on Server works,So I am trying to edit the rule with Powershell When I enter below code ,the COM object is invoking on local machine.How can I invoke it on remote machine? Enter-PSSession $Session $fw = New-Object -ComObject hnetcfg.fwpolicy2

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  • server 2008 r2 - wbadmin systemstatebackup - system writer not found in the backup

    - by TWood
    I am trying to manually run a systemstatebackup command on my server 2008 r2 box and I am getting an error code '2155347997' when I view the backup event log details. The command line tells me that I have log files written to the c:\windows\logs\windowsserverbackup\ path but I have no files of the .log type there. My command window tells me "System Writer is not found in the backup". However when I run vssadmin list writers I find System Writer in the list and it shows normal status with no last errors stored. I am running this from an elevated command prompt as well as from a logged on administrator account. My backup target path has permission for network service to have full control and it has plenty of free space. Looking in eventlog I have two VSS error 8194 that happen immediately before the Backup error 517 which has the errorcode 2155347997 listed. All three of these errors are a result of trying to run the command for the systemstatebackup. It's my belief that some VSS related permission is failing and exiting the backup process before it ever gets started. Because of this the initial code that creates the log files must not be running and this is why I have no files. When running the systemstatebackup command from the command prompt and watching the windowsserverbackup directory I do see that I have a Wbadmin.0.etl file which gets created but it is deleted when the backup errors out and stops. I have looked online and there are numerous opinions as to the cause of this error. These are the things I have corrected to try and fix this issue before posting here: Machine runs a HP 1410i smart array controller but at one time also used a LSI scsi card. Used networkadminkb.com's kb# a467 to find one LSI_SCSI entry in HKLMSysCurrentControlSetServices which start was set to 0x0 and I modified to 0x3. No changes. In HKLMSystemCurrentControlSetServicesVSSDiag I gave network service full control where it previously only had "Special Permission". No changes. I followed KB2009272 to manually try to fix system writer. These are all of the things I have tried. What else should I look at to resolve this issue? It may be important to note that I run Mozy Pro on this server and that was known in the past to use VSS for copying operations and it occasionally threw an error. However since an update last year those error event log entries have stopped.

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  • Shares on Hyper-V Host or Guest?

    - by Lazlow
    I'm about to deploy a Hyper-V Server, that will have 2 local drives: 250GB for VMs, 2TB for Shares. Does Hyper-V Server (standalone, not as a role) allow you to setup Network Shares? Or will I have to setup a VM with the 2TB drive allocated to it, for setting up the Shares? If Hyper-V supports Shares, would there be a performance benefit? The Shares will be used by both the VMs on the Hyper-V Server and other Servers within the Network.

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  • Unable to start sql service when TCP/IP is enabled under SSCM - SS Network Configuration

    - by ebel
    I get error 10048. and this in event history: The SQL server service terminated with server-specific error. Only one usage of each socket (protcol/network address/port) is normall permitted. Any idea howto fix this ? Port set is the default 1433... If this is turned off, which is default of course, SQL service starts like a champ. I have done this config many times on other servers with no problem.

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  • Windows service running as network service - how does it authenticate? Breaking change in W2K8?

    - by Max
    A Windows service running as "Network Service" talks to services on other machines (here: SQL Server and Analysis Services), using Windows authentication. For authentication, we have to grant permissions to the machine account of the service. E.g. if service runs on server MYSERVER in domain MYDOMAIN, it'll authenticate itself as "MYDOMAIN\MYSERVER$". - Am I correct, so far? Now here's my question: does this still apply when talking to a service on the SAME machine? Or will it authenticate with something like "NT AUTHORITY\Network Service" instead when connecting to a local service? And: is there any chance this is a breaking change from Windows 2003 to Windows 2008? We're having an actual issue in our system where the account was able to connect to local services with only the machine account having permissions in W2K3. In W2K8, this doesn't seem to work anymore: authentication to local services now fails, but still works to remote machines.

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  • Server 2008, 2 NICs, 2 fixed IPs - big delays using internet

    - by user46055
    Hi geniuses I have an all in one Windows 2008 server, configured with AD/DHCP/DNS/RRAS - all set up with wizards and no specific tweaking. The server has 2 network adapters : one of which ("MyWAN") is plugged into our office's internet connection, the other ("MyLAN") is plugged into a local switch, which is also where all our desktops are connected. So this one server is doing everything. When first set up, MyLAN had a fixed IP of 192.168.2.1 and served the desktops with DHCP scope 192.168.2.50-99. It also told them to use 192.168.2.1 as DNS and gateway. MyWAN was setup to take its IP etc from DHCP, being handled by the building's router and ADSL modem etc. All desktops were setup to use DHCP. This all worked perfectly fine, until I recently changed MyWAN to have a static IP (I wanted to access it from home, and needed to give it a static IP to port map in the building's router). Things still work, but there is now a long delay when accessing the internet. The actual speed is as before when downloading, but there is a pause of 3-6 secs when connecting to new hosts (for example if I browse to slashdot from either a desktop or the server itself, it'll hang on connecting to slashdot.org, hang again on connecting to *.fsdn, *.google-analytics.com and all the other hosts referenced from the main page). If I ping slashdot.org from the server, I get the following : Pinging slashdot.org [216.34.181.45] with 32 bytes of data: Reply from 192.168.2.1: Destination host unreachable. Reply from 216.34.181.45: bytes=32 time=99ms TTL=239 Reply from 216.34.181.45: bytes=32 time=100ms TTL=239 Reply from 216.34.181.45: bytes=32 time=101ms TTL=239 Pinging anywhere external always seems to hit 192.168.2.1 first, which doesn't seem right. Trying tracert from the server gives the following : Tracing route to slashdot.org [216.34.181.45] over a maximum of 30 hops: 1 MYSERVER01.intranet [192.168.2.1] reports: Destination host unreachable Trying tracert from a desktop gives the following : Tracing route to slashdot.org [216.34.181.45] over a maximum of 30 hops: 1 <1 ms * <1 ms MYSERVER [192.168.2.1] 2 * * * Request timed out. 3 6 ms 6 ms 6 ms dsl-gw1.ge.mer.uk.webtapestry.net [217.151.111.17] 4 38 ms 239 ms 251 ms gw-router.ge.mer.uk.webtapestry.net [217.151.111.13] ...and then all is fine after that. I think that DNS is working fine because the domain names are getting translated to correct IPs immediately. DHCP seems to be okay? So perhaps it's something up with my RRAS setup - although I can't see any option during the setup wizard which I would have filled in differently. I've also tried changing the binding order of the two network connections, to prioritise MyWAN, but that doesn't seem to have done anything. Any idea what's up? Many thanks - Rob

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  • OLTP Sql Server RAID configuration with 10 disks, allocation Unit and disk stripe size

    - by Chris Wood
    On a new db server I only have 10 disks to play with, The usage is about a booking every 3-5 seconds, so not high volume, I know compromises have to be made, but my initial thoughts are - DISK 1 & 2 - RAID 1 - OS DISKS 3,4,5,6 - RAID 10 - Data, Indexes & TempDB DISKS 7,8,9,10 - RAID 10 - Logs & Backup Full backups will take place when there is virtually no traffic on the website so not bothered about the contention with the logs. disk 3-10 - 8kb NTFS unit allocation size disk 3-10 - 64kb Disk Stripe size does this seems to be sensible, any other considerations I have omitted ? thanks

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  • SQL Server 2008 intellisense not working

    - by Ardman
    Am not sure which site this is supposed to be posted on, but after installing SSMS Tools, my intellisense is no longer working. Please see this question: http://stackoverflow.com/questions/2816861/sql-server-2008-intellisense-no-longer-working

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  • Logging with Resource Monitor?

    - by Jay White
    I am having sudden spikes in disk read activity, which can tie up my system for a few seconds at a time. I would like to figure out the cause of this before I set my machine to go live. With Performance Monitor I know I can log activity, but this does not show me individual processes that cause a spike. Resource Monitor allows me to see processes, but I have no way to keep logs. It seems unless I have Resource Monitor open at the time of a spike, I will not be able to identify the process causing the spike. Can someone suggest a way to log with Resource Monitor, or an alternative tool that can?

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  • windows 2008 R2 TS printer security - can't take owership

    - by Ian
    I have a Windows 2008 R2 server with Terminal server role installed. I'm seeing a problem with an ordinary user who is member of local printer operators group on the server. If the user opens a cmd window using ‘run as administrator’ they can run printmanager.msc without needing to enter their password again. In printmanager they can change the ownership of redirected (easy print) printers without problems. If, from the same cmd window, they use subinacl to try and change the onwership of the queue to themselves they get access denied: >subinacl.exe /printer "_#MyPrinter (2 redirected)" /setowner="MyDom\MyUsr" Elapsed Time: 00 00:00:00 Done: 1, Modified 0, Failed 1, Syntax errors 0 Last Done : _#MyPrinter (2 redirected) Last Failed: _#MyPrinter (2 redirected) - OpenPrinter Error : 5 Access denied so, same context, same action but one works and one doesn't. Any ideas for this odd behaviour? I'm using subinacl x86 on an x64 server as I can't find anything more up to date. I've tried with icacls and others but couldn't get them to do anything with printers. EDIT: added after Gregs comments regarding setacl below If I log into the TS server as Testusr and open Admin Tools Printer Admin (as administrator) and then type mydomain\testusr and the testusr's password, then I can change the ownership of the printer queue and set testusr as the owner. However if I open cmd as administrator and, again, type mydomain\testusr and the users password when I try to change the ownership of my redirected printer I get the following: C:\>setacl -on "Bullzip PDF Printer (12 redireccionado)" -ot prn -actn setowner -ownr n:mydom\testusr WARNING: Privilege 'Back up files and directories' could not be enabled. SetACL's powers are restricted. WARNING: Privilege 'Restore files and directories' could not be enabled. SetACL's powers are restricted. INFORMATION: Processing ACL of: <Bullzip PDF Printer (12 redireccionado)> ERROR: Enabling the privilege SeTakeOwnershipPrivilege failed with: No todos los privilegios o grupos a los que se hace referencia son asignados al llamador. [meaning not all referenced privs or groups are assigned to the caller] SetACL finished with error(s): SetACL error message: A privilege could not be enabled maybe I'm getting something wrong but if the built in windows tool can do it with just membership of the 'print operators' group then setacl should be able to as well, no? However setacl seems to depend on other privileges, which in reality are not required to do this.

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  • Mixed sessions with Classic ASP on IIS 7.5 and Windows 2008 R2 64 bit

    - by Marcin
    Recently had an issues with a server upgrade from IIS 6 on Windows 2003 to IIS 7.5 on Windows 2008 R2 64 bit. We have a number of websites running on Classic ASP. All the sites sit under a particular site, e.g. www.example.com/foo and www.example.com/foobar. On IIS 6 each site was set up as a virtual directory and things worked fine. Since moving to the new set up, a lot of websites seem to have mixed Sessions. To be clear, this is not a app pool recycling issue; rather the sessions are populated with information when the user hits the site and while browsing they get sessions from different sites. We've determined this based on - a few customers called up and reported having their shopping cart with items with names of items belonging to a different site - also our own testing showed that some queries being run would try to bring products in from a different site We've tried - disabling dynamic caching - converting each site to be a virtual application (if I understand correctly, the virtual directory/application concepts were changed/refined somewhat in IIS 7 although to be honest, I'm not clear what the difference is) - various application pool changes (using .NET 2 framework), classic and integrated modes, changing the Process model to NetworkIdentity), all to no avail. The only thing we haven't tried is changing it to run as a 32 bit application. We're not using http only cookies, so when I open up a browser and type document.cookie into the dev console in Firefox/Chrome/IE that there will be multiple ASPSESSIONID=... values whereas previously I believe there was only one. Finally, we use server side JScript for the classic ASP pages, not VBScript, so we have code similar to the below. //the user's login account as a jscript object Session("user") = { email : "[email protected]", id : 123 }; and if we execute a line of code like below: Response.Write( typeof(Session("user")) ); When things are running correctly, we get "object" - as expected. When the Session gets trashed, the output is "unknown" and we are also unable to access the fields within the JScript object (e.g. the .email or .id fields). Much appreciated if anyone can provide any pointers about how to resolve this, everything on google seems to point to different issues.

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  • Configuring BitLocker on existing Windows Server 2008

    - by neildeadman
    On our file server, we want to enable BitLocker so that we can encrypt a single drive and I know that we have to also encrypt the drive the system is installed on. In my tests with VMs, I have to create a partition on the same disk as Windows is installed either before I install Windows or after (I can use the BitLocker Drive Preparation Tool). This tool shrinks the C: drive to make way for a 1.5GB partition. I'm a little concerned about doing this with a live system so wanted to see if it was possible to get BitLocker to use a partition on another drive?

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  • Unable to telnet out on port 25 on windows server 2008

    - by NickGPS
    Hi All, I just setup a Windows 2008 R2 server and am trying to get a basic mail server up and running so that I can send emails from my applications. I setup a virtual SMTP server in IIS6 and tried doing a local telnet to port 25, which seemed to work fine. There were no errors during this stage and I can see the mail message appear in the Queue folder. The problem is that mail never leaves the Queue folder. I then tried to telnet to a remote mail server on port 25 but couldn't connect:- telnet 209.85.227.27 25 Could not open connection to the host, on port 25: Connection failed) I checked my firewall and there is a default setting to allow all outgoing TCP traffic with no restriction. I even setup a specific rule for outgoing port 25 traffic but to no avail. I then ran a SmtpDiag.exe command .\SmtpDiag.exe [email protected] [email protected] and received the following output Searching for Exchange external DNS settings. Computer name is WIN-SERVERNAME. Failed to connect to the domain controller. Error: 8007054b Checking SOA for gmail.com. Checking external DNS servers. Checking internal DNS servers. SOA serial number match: Passed. Checking local domain records. Checking MX records using TCP: gmail.com. Checking MX records using UDP: gmail.com. Both TCP and UDP queries succeeded. Local DNS test passed. Checking remote domain records. Checking MX records using TCP: gmail.com. Checking MX records using UDP: gmail.com. Both TCP and UDP queries succeeded. Remote DNS test passed. Checking MX servers listed for [email protected]. Connecting to gmail-smtp-in.l.google.com [209.85.227.27] on port 25. Connecting to the server failed. Error: 10060 Failed to submit mail to gmail-smtp-in.l.google.com. Is there any other diagnostics I can do to figure out if it's my firewall or something else? I have removed antivirus to make sure that it wasn't causing the problem. Any ideas would be much appreciated.

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  • Windows Server 2008 Software Raid 5 - Data integrity issues

    - by Fopedush
    I've got a server running Windows Server 2008 R2, with a (windows native) software raid-5 array. The array consists of 7x 1TB Western Digital RE3 and RE4 drives. I have offline backups of this array. The problem is this: I noticed a few days ago after copying a large file to the disk that there was an integrity issue with that file - it was a ~12GB file that I had downloaded via uTorrent. After moving it to the raid array, I used uTorrent to relocate the download location, and performed a re-check so I could seed it from that location. The recheck found that only 6308/6310 chunks of the copied file were intact. My next step was to write a quick powershell script that would copy files to the array, while performing a SHA1 hash of the original and resultant files and comparing them. Smaller files (100-1000MB) copied over just fine. When I started copying larger data (~15GB), I found that the hash check failed about 2/3rds of the time. The corrupt files had very, very small inconsistencies - less than .01%. I further eliminated the possibility of networking or client issues by placing this large file on the C:\ of the server, and copying it repeatedly from there to the array, seeing similar results. Copying the data via explorer, powershell, or the standard windows command prompt yield the same results. None of the copies fail or report any problems. The raid array itself is listed as healthy in disk management. After a few experiments, I shut down the server and ran memtest overnight. No errors were detected. A basic run of chkdsk found no problems, but I did not use the /R flag, as I was unsure how that might affect a software raid-5 volume. I next ran Crystal Disk Info to check the smart data on the drives - but found that CDI only detected 5 out of 7 of the disks in the array. I have no idea why. Nevertheless, CDI shows the following "caution" flags on a single one of the drives: 05 199 199 140 000000000001 Reallocated Sectors Count C5 200 200 __0 000000000001 Current Pending Sector Count Which is a little bit alarming, but I don't really know what to do with the information. I hardly feel like one reallocated sector could be causing this. At this point, I'm looking for some guidance on what to do next. I need to determine the cause of this issue, but I'm hesitant to run chkdsk /R or any bootable disk health checkers because I'm afraid they might break the array. I've considered triggering a re-sync of the array, but I'm not actually sure how to do that without doing something silly like manually dropping a disk and then restoring it. Any advice that could help me ferret out the precise cause of this issue would be greatly appreciated.

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