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  • How safe is it to run CHKDSK on an SSD?

    - by Eilon
    I recently saw Windows 7 pop up a warning or two that I should run chkdsk on my laptop. My laptop came with an SSD and I'm not sure if there are any negative implications to running chkdsk on such a drive. Are there any potential issues with reporting "bad sectors" on the drive? I would imagine that the physical concept of sectors is completely different between a platter and a microchip. I don't think my SSD supports TRIM. It's about 14 months old and a quick web search seems to hint that it doesn't (though it's nearly impossible to find out this info for sure!). I'm also not sure if TRIM is even relevant here since there shouldn't be much in the way of deletes. So, how safe is it to run chkdsk on my SSD drive? The model of SSD that I have is reported as "Samsung SSD PB22-JS3 2.5".

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  • Linux software raid robustness

    - by Waxhead
    I have a 4 disk 5TB raid5 setup where a disk is showing signs of going down the drain. It is reporting media errors and from dmesg I can see that several read errors are corrected. smartctl does report "notifications" but no panic so far. Since new disks are rather expensive at the moment I am starting to pondering exactly how robust the linux md layer is. I would appreciate if someone could shed some light on how md actually deals with disk errors. For example how does md deal with write and read errors - what does it (really) take for disk to be rejected from an array. I also read that recently md got support for mapping out bad blocks. Does this mean that the read errors I've had would have been mapped out if I where running kernel 3.1 or would md still try to "work on them" to make them usable.

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  • Windows 8 asks DotNet 3.5 to install DotNet 3.5

    - by William.Ebe
    While trying to install some tools in Windows 8, it showed me a nice message saying it requires DotNet framework. Well, it's fine. But the bad part is I have offline installers for v2.0 and v3.5. While I'm trying to install those installers it shows me the same message as it shows above. I can't consider the web installer, because I don't want to download around 100MB. The file I have works fine for other versions like Windows 7 or XP. Any fixes?

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  • How do I mount a HFS+ dd image in OSX?

    - by Paul McMillan
    I had an HFS+ formatted drive that was going bad and wouldn't mount at all on OSX. I created an image using ddrescue on linux, and was able to save most of it. I can mount the drive and see the data just fine in linux using this: mount -o loop -t hfsplus dd_image mountpoint This doesn't work on my OSX system since hfsplus isn't a valid filesystem type. If I try: mount -t hfs image mountpoint It complains that it needs a block device. What's the fix here?

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  • NetApp and SQL Server?

    - by Edinor
    Do you have any good or bad experiences to share running SQL Server OLTP Systems on NetApp appliances? I have been working with a small, relatively low-volume cluster with a lower-end NetApp device, and I have found the environment to be generally unstable, at least compared to my experiences with other SANs, iSCSI arrays, and DAS setups. I struggle to believe that RAID DP and WAFL are more than fairy-dust technologies. A solution has been proposed to me that I just need a bigger, better NetApp, with PAM cards and other cool technology I've not heard of, and I feel like I would be better off spending a quarter of that on good direct-attached drives and a beefy server. At the same time, I feel that an Enterprise-class SAN should be something I can count on to be consistently a more stable, better performer than the less expensive solution I might propose. Are you a SQL Server DBA in an OLTP environment and love your NetApp? If you don't like them, why not?

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  • Configuring an apache virtualhost to link to another's virtualhost's subdomain

    - by Laurent Van Winckel
    I have a domain on my server (on its own virtualhost), e.g. domain.com, which has a lot of subdomains with content on it. sub1.domain.com sub2.domain.com This virtualhost looks like this: ServerAdmin [email protected] ServerName domain.com ServerAlias *.domain.com DocumentRoot /var/www/domain.com/public_html/ I want to put other domains on the server and have each of them link to a specific subdomain on domain.com. I don't want it to redirect. I want a similar behavior as the [L,PT] flags on mod rewrite. I've tried this: ServerName otherdomain.com ReWriteEngine on RewriteCond %{HTTP_HOST} ^otherdomain.com$ [NC] RewriteRule ^(.*)$ http://sub1.domain.com/$1 [PT,L] But it is giving me a 400 Bad request error. How would I configure such a virtualhost?

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  • Mail server responds with Error 500 line too long

    - by mawimawi
    I am occasionally receiving error messages from mail servers with the above message. It seems that at least one line in the e-mail has more than 999 characters and therefore the e-mail is bounced. Is this "by design"? in an RFC? Or some weird pseudo-spam-filter? Or just a bad mailserver? I googled around a bit but did not find a competent answer. Hopefully one of you guys can enlighten me.

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  • What are good values for PSU voltages?

    - by earlz
    Hello, I have an odd computer I'm trying to fix that will crash only during the setup of an OS(crashes on every OS I've tried so far) It's not overheating and it is stripped down as much as possible and I've tried multiple harddrives, and memtest86+ can run on it for 3 hours without a crash or fail. So, I was a bit stumped and was looking in the BIOS for possible causes and found a hardware monitor that shows PSU voltages. They are: VCORE: 1.432V 3.3V: 3.136V 5V: 5.273 12V: 12.144V I thought the 3.3V looked a little low, but I'm not really sure on how "bad" that is. So, what are the good ranges for the voltages on each CPU rail?

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  • Eclipse making background video skip with almost every click of the mouse

    - by RustyH
    The problem is i like to listen to videos online (mostly or all flash video) while programming and never had any problems until i started using eclipse, now every time i do just about anything other than type, it makes the video skip/freeze really bad and is really annoying. I have never had this happen using visual studio, netbeans, or adobe flash for that matter, unless i was compiling or doing something that hogs the processor. Are there any settings that might could fix this its getting really annoying. it happens almost every time i even click "find" on the find pop-up window and it is not like it is having to search a big file or anything it is only 700 lines, with honestly only about 1/2 that have content on them. Any ideas?

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  • how to protect telnet access to smtp port 25?

    - by Michael Mao
    Hi all: Please consider the following: 192-168-1-106:~ michael$ telnet <remote_server_ip> 25 Trying <remote_server_ip>... Connected to li*****.linode.com. Escape character is '^]'. 220 mindinscription.net ESMTP Postfix (Ubuntu) quit 221 2.0.0 Bye Connection closed by foreign host. Is this very bad? how to protect port 25 from malicious attackers? I've already set up a firewall, but not very sure what to do in this case. Basically I'd like to use this server to only send emails as alert messages, not receiving any external emails. Many thanks to the help in advance.

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  • What does NT_STATUS_BAD_NETWORK_NAME mean in Samba?

    - by Neil
    I set up a share like this: [global] security = user map to guest = Bad Password usershare allow guests = yes [vms] comment = VirtualBox Virtual Machines path = /home/neil/VirtualBox/HardDisks guest ok = yes read only = yes And when I access the share as myself, and type in my password, it works fine: $ smbclient //neil-ubuntu/vms -U neil Enter neil's password: Domain=[SHUTTERSTOCK] OS=[Unix] Server=[Samba 3.4.0] smb: \> But when I access it as guest, it doesn't work: $ smbclient //neil-ubuntu/vms -U guest Enter guest's password: Domain=[SHUTTERSTOCK] OS=[Unix] Server=[Samba 3.4.0] tree connect failed: NT_STATUS_BAD_NETWORK_NAME Regardless of what password I type in. Does anyone know why? Also, why does smbclient print such useless error messages?

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  • Are all bluetooth adapters the same ?

    - by ldigas
    I have a wireless bluetooth mouse which I'm not using. It used to have a bluetooth adapter with it, which I lost a long time ago ... (don't ask). Since my regular mouse just died (bad contact in cable from messing with it too much) I was thinking of buying just the new generic bluetooth adapter ? Are all those adapters the same thing ? Or can this that came with the mouse be somehow different ? Edit by ldigas: How would one find out what bluetooth standard/class/adapter one needs ? (I don't see anything useful written on the sticker on the mouse). Or to put it bluntly - will it work with this one in your opinion ?

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  • How to remove raid 5 array of 5 SAS and use only use one SAS at a time without writing any thing to disc for recovery

    - by murtaza hamid
    I have HP server ML370 g5 with 8 SAS, c drive 1 72 gb raid 0, d drive 2 72 gb raid 0, f drive 5 146 gb raid 5. 2 of 5 sas drive has got bad sectors and raid 5 is showing status failed. now i want to remove all this 5 SAS and put 1 by 1 in any of the bay to make its image for data recovery purpose without writing anything to the drive. how should i proceed. i also want to keep drive c and d intact. also is it possible if i put all this 5 drives in the bay with the same sequense will it recognise the raid 5 array ( i read some where its smart controller..just curious) many thanks in advance.

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  • How to make MAMP PRO / XAMPP secure enough to serve as production webserver? Is it possible?

    - by Andrei
    Hi, my task is to setup a MAMP webserver for our website in the easiest way so it can be managed by my colleagues without experience in server administration. MAMP PRO is an excellent solution, but some guys don't suggest to use it for serving external requests. Could you explain why it is bad (in details if possible) and how to make it secure enough to be a full-scale and not-only-local webserver? Is there a better solution? Update There is a discussion on the MAMP website. XAMPP developers say that one can make their product secure: The default configuration is not good from a securtiy point of view and it's not secure enough for a production environment - please don't use XAMPP in such environment. Since LAMPP 0.9.5 you can make your XAMPP installation secure by calling »/opt/lampp/lampp security«. Could you comment it?

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  • How to securely generate memorable passwords?

    - by Tim
    Whenever I need new passwords I use some tools to generate those, preferable memorable passwords, but I've been wondering how secure this might actually be. Using The xkcd random number generator is probably pretty bad, cat /dev/random is probably pretty good, but generating memorable passwords seems a bit more tricky. Whenever a program generates a memorable password, it only uses a subset of the total password space available, and it is not clear to me how big this space is. Of course a long password should help in this case, but if the `memorable' part of the program is too predictable, your passwords are not very good in the end. TL;DR: how secure are memorable password generators, given the fact that `memorable' passwords are a subset of total password space? Some tools I know of: pwgen -- seems ok, but passwords are not too memorable Mac Password Assistant - generates memorable passwords but it is unclear to me how this works.

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  • PHP stop working after a server reboot

    - by Ido Bukin
    I reboot my server and suddenly the PHP-FastCGI stop working . I try to do - /etc/init.d/php-fastcgi restart Also i try to restart my Nginx : /etc/init.d/php-fastcgi restart How can i turn on my PHP again ?? My server run - Ubuntu 11.10 Nginx 1.2.3 MySQL PHP-FastCGI Also i want to ask it is possible that i have 2 Nginx installs on my server and they run in the same time ? when i check the Nginx version in the console its says that the version is 1.2.3 And when i go to my site i see - 502 Bad Gateway nginx/1.0.5 How can i fix this ?

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  • Vertex 2 SSD is running faster than my Vertex 3 SSD?

    - by Kairan
    I used Acronis Disk Director to do a direct clone of my C:\ windows 7 x64 drive from my Vertex 2 to my new Vertex 3 SSD (Just to show the drive software winstall everything is identical.) I ran a performance test on Windows using the Windows Experience Index. The rating I am receiving when booting on the Vertex 2 is 7.5 While I am getting only a rating for the Vertex 3 of 6.9 My understanding is that the read/write speeds of the Vertex 2 is only up to 250MB/sec while the Vertex 3 is up to 500MB/sec. Copying a single file (3GB in size) from the Vertex 3 to itself was getting speed of approx 70-80MB/sec This speed is no better (maybe worse) than what I got from the Vertex 2 I am connected via the SATA 3 port on the motherboard, using an SATA 3 cable Is this issue caused by the drive cloning? Do I have a bad SSD?

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  • Installing ZendServer on IIS6

    - by Wayne M
    I need to run ASP and PHP applications side by side, so I installed ZendServer Community Edition on our existing Server 2003 platform. I specified it to use the existing IIS instance so I don't have to deal with multiple ports (we use ZoneEdit to manage our DNS and they don't seem to allow anything other than port 80 without forwarding). The install went smooth but when I try to configure and manage the install by going to http://localhost/ZendServer (or even just localhost) I get a Bad Request (Invalid Hostname) error. I haven't done anything except install the server, and this is my first time working with ZendServer. How do I fix this so I can get things set up?

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  • Bulk Email Verification Tool

    - by JoefrshnJoeclean
    I'm looking for a bulk email validation tool to parse a list of 60K email addresses. Our company sends out 8 Million email newsletters a month via our mailing list software - MDAEMON. MDAEMON ships with a bad email address validator but I'm not quite comfortable with its results as it captures returned email addresses with SMTP errors of 500 and above. (We want to keep emails that return a Full Mailbox error or bounce backs that see us as SPAM) To further prune the list, we use Advanced Email Verifier. But I tested a random sample of this list and found a couple emails to be valid. Since our company relies heavily on traffic from our newsletters, I am wondering what other Windows-based bulk email verifier tools are out there?

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  • Rerouting traffic from port 80 to another port on a single ip

    - by zam
    I have a server with multiple IP addresses associated with it. I'm trying to run a node.js web server (which I do not want to run as root), using only one of those ip addresses (it would be very bad if the traffic from all the ip addresses were forwarded). Through searching superuser, it looked like this could be possible with iptables: How to setting up iptables for traffic fowarding on port 80 from specific sources iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 --source 212.333.111.222 -j REDIRECT --to-port 9020 However, I do not understand why eth0 is needed. According to: http://blog.softlayer.com/2011/iptables-tips-and-tricks-port-redirection/ this could be done with: iptables -t nat -A PREROUTING -p tcp --dport 2525 -j REDIRECT --to-ports 25 What is the correct way of forwarding traffic from a single ip on port 80, lets say 111.111.111.111:80 to another port on the same server, lets say 111.111.111.111:8765? thanks for your help!

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  • Synchronize pasteboard between remote tmux session and local Mac OS pasteboard

    - by bhargav
    Setup: I use iTerm2 on MacOS to connect to a remote server. The remote server runs tmux, in which I open files and edit in vim sessions. Problem: I can't copy/paste between the remote tmux session and the local iTerm client. I can use iTerm 2's alt/option + mouse selection to select text, but this copies over multiple vim panes/tmux panes - bad. Is there any elegant solution to make selections in tmux panes synchronize between the remote pasteboard and the local (MacOS pasteboard)? I've seen reattach-to-user-namespace, but I'm pretty certain it doesn't do what I want.

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  • How do you backup your localhost ?

    - by justjoe
    i have method to backup my work on localhost based on week basis. i use multipe dos command and save in on a bat file. i use command such as copy and xcopy and save my localhost to another place. After my server grow larger, i think it take too much space. So tehre is a way to solve this problem ? maybe a software that can track changes on our php code or another method to preserve your code when thing go bad ? EDIT : I use windows xp sp2, on XAMPP Apache PHP 5.2.1 the localhost refer to my laptop. i install the localhost server here

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  • User Permissions: Daemon and User

    - by Eddie Parker
    Hello: I often run into this issue on Linux, and I'd love to know the proper way of solving it. Say I have a daemon running. In my example, I'll use LigHTTPD, a webserver. Some software, like Wordpress, enjoys having read/write access to files for updating applications via a web interface, which I think is quite handy. At the same time, I enjoy being able to hack on my files using vim, using my local user account, 'eddie'. Herein lies the rub. Either I chown everything to lighttpd or eddie and a shared group between them both, and chmod it 660, or perpetually sudo to edit the damned things. The former isn't a bad solution, until I create a new file in which case I have to remember to chmod it appropriately, or create some hack like a cron job that chmods for me. Is there an easier way of doing this? Have I overlooked something? Cheers, -e-

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  • VGA cable causing resolution issue

    - by LatishS
    I recently bought a new VGA cable. When connected, Windows 7 detects my monitor as a generic plug and play monitor. The resolution goes bad with the screen blurred. This problem disappears when I connect my original VGA cable. Also Windows 7 detects my LG monitor correctly in this case. I am pretty sure it is something to do with the VGA cable but have no idea what could be the possible issue. Any pointers would be very much appreciated.

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  • nginx: rewrite a non-existent php-file to another php-file with all arguments

    - by at0m33
    i really need help here. Sitting for some time now and dont figured it out. I want to realize a very simple task - rewrite a non-existent php file to another existant php file with all arguments like: this http://example.com/nonexistent.php?url=google.com to -> http://example.com/existent.php?url=google.com I tried something like this: rewrite ^/nonexistent.php /existent.php; Which dont works (File not found). But redirect a non-existent html file to a php file like this: rewrite ^/nonexistent.html /existent.php; works. I dont want to rewrite a html file, but this is still a confusing behaviour. Therefore it tried also something like this (and some variations): rewrite ^/nonexistent.php?url=^(.*)$ /existent.php?url=$1; which is also not working. (Maybe the syntax is bad) Any help here? It would be very nice!

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