Search Results

Search found 3244 results on 130 pages for 'proof of concept'.

Page 60/130 | < Previous Page | 56 57 58 59 60 61 62 63 64 65 66 67  | Next Page >

• How do boot sectors and multiple drives works?

  - by GiH

  I don't fully understand the concept of a boot sector, I was hoping someone could clear this up for me. If you have two hard drives, with an OS installed on each, does each drive have its own boot sector? Does each drive need an MBR partition? I've got Linux and Windows on two separate drives. I've had issues when installing Linux and grub, and now I've finally decided to use the Windows bootloader to start up. Would Windows have gotten rid of grub when i used /fixmbr or does it stay there on the boot sector of the other drive?

  Read the article

• Combo ports and SFP

  - by Tahir

  I have Netgear GSM7324s prosafe switch. Switch has 24x1G ports. 4 ports are labeled as combo ports while 2 are labeled as SFP ports. I connected 2 PCs (each having 1gig and 10Gig NICs), with the switch using 1 & 10 Gig cables. Whenever, I ping the PCs the pinging is not working. As soon as, I removed the 10G cables, the ping starts working. Can someone please explain that what's going on. Also it would be very helpful if you can tell me the concept of combo ports, SFP ports in easy words?

  Read the article

• multiple file systems for mysql

  - by RainDoctor

  Does mysql support multiple file systems for a single database with most of the tables being on MyISAM? Context: we have a 1.5TB mysql database, which is increasing at the rate of 200GB per month. The storage is directly attached, whose slots are almost full. I can add another DAS, and increase the file system. But resizing volume, resizing file system, etc are getting messy. Is there a concept of "tablespace, datafile" (like in oracle) in MySql world? Or how you guys manage mysql db with these kind of constraints?

  Read the article

• NAT vs public IP (and blocked ports)

  - by user1646166

  I have a problem with my ISP. They say that they don't block any ports and I have public IP, while I think these both statements are false. Before I talk to them again (which is really tough when my understanding of these terms is different than theirs) I would like to make some things clear. It seems like my computer is behind NAT (is it possible to have public IP and be behind NAT at the same moment?). When I check my IP, through some external server, and type that IP into browser I get a home page of some router (not mine). Isn't that a proof that my IP isn't public? Also, I have problems with making connections via some ports. E.g. when I'm trying to connect through some high port ( 1023) via SSH, it doesn't work. Is it possible that certain range of outgoing ports from my computer are blocked? Or is it simply because that my ssh client (PuTTY) can't receive incoming packets because of blocked incoming ports? To avoid some questions: it's not a problem with my router, I tried connecting my PC directly and it also didn't work, while having connected by 3G using phone with USB tethering, it does work. Thanks!

  Read the article

• Resolving real IP address out of a dynamic dns address

  - by stavnir

  I recently opened a dynamic dns user (at no-ip for that matter..) for my own personal needs and especially for ssh-ing my computer whenever I need to, without knowing it's static IP. My questions are: Am I misusing the concept of dynamic dns? Are there more appropriate methods to do what I want to do? If not, how do I resolve my router's real ip address? Firefox somehow manages to do so, nslookup and other similar commands only resolve the ip of the ddns server (e.g. no-ip.org). Trying to figure this mystery with wireshark failed miserably ;)

  Read the article

• Why can't I create an Alias Resource Record Set for an EC2 instance

  - by praterade

  I have been working with AWS for over a year, setting up EC2 instances, domains, ELBs, etc. When I want to assign a subdomain to an EC2 instance, I have to create an elastic IP (that I pay for), then assign a CNAME record to that elastic IP. When I want to assign a subdomain to an ELB (load balancer) instance, I just create an alias resource record set to the ELB. I've read over the docs and don't understand why AWS doesn't support aliasing to instances. Am I missing a key concept here? Wouldn't it be simpler to just alias EC2 instances and skip the whole elastic IP bit?

  Read the article

• Provision storage in SAN encironment

  - by wildchild

  hi,.. Can somebody help in understanding how Lun Provisioning is done in clariion based on client requirement. Say, a client needs one 50 GB space on the host( for application) ,two -350 GBs ( for DB and stuff) on the same host and i have 4 raid groups with space of 200 GB in one 50 GB in second and 400 GB and 400GB in rest two all having 5 disks. And , I 'm using Raid 5 only. How do i provision keeping performance in mind( so that performance hit is not there)?..And i need to understand the concept of meta head as well. Please help me by elaborating the above scenario..I am learning to provision storage in non productive environment( b'fore going ahead and working on client prod server) and i have been learning a lot from SF ...I request the seniors here to help me understand it better. Thanks for reading

  Read the article

• Kindly guide me to buy a new laptop [on hold]

  - by Its me 007

  I am from India. I want to buy a new laptop. Shortlisted few but confused between which processor,Chip set and Graphics will be the best suited for my requirements. NOTE: NOT ABLE TO POST THE LINKS YOU WILL HAVE TO COPY PASTE IT. SORRY. 1) HP Pavilion 15-N004TX - 4th Gen CI5 - 4200U/4GB RAM/500 GB HDD/ 1GB Radeon Graphic - Rs 39990 www.homeshop18.com/hp-pavilion-15-n004tx-laptop-4th-gen-intel-core-i5-4200u-4gb-500gb-15-6-linux-silver-black/computers-tablets/laptops/product:30989197/cid:16317/ 2) Lenovo Essential G510 (59-398452) - 4th Gen Ci5 4200M/ 4GB/ 500 GB/Win8/2GB Graph ATI Sunpro 8570 - Rs 44969 www.flipkart.com/lenovo-essential-g510-59-398452-laptop-4th-gen-ci5-4gb-500gb-win8-2gb-graph/p/itmdp26eprwf5k5v?gclid=CMnh99GA2LoCFaRU4godNiUAGQ&semcmpid=sem_7847244212_laptopsnew_goog&tgi=sem%2C1%2CG%2C7847244212%2Cg%2Csearch%2C%2C24387103114%2C1t1%2Cb%2C%2Blenovo+%2Bg510%2F59+%2B398452%2Cc%2C%2C%2C%2C%2C%2C%2C2 3) HP Pavilion G6-2303TX Laptop (3rd Gen Ci5 3230M/ 4GB/ 500GB/ DOS/ 1GB Graph) - Rs 40500 www.flipkart.com/hp-pavilion-g6-2303tx-laptop-3rd-gen-ci5-4gb-500gb-dos-1gb-graph/p/itmdm6yzh4gr4cxd?pid=COMDM6YHWMGDRDEZ&ref=1d2b85fc-a03d-4c7d-844b-ec9e8dc95a81 4) HP Pavilion 15-E039TX Laptop (3rd Gen Ci5 3230M/ 4GB/ 1TB/ Win8/ 2GB Graph) - Rs 46690 www.flipkart.com/hp-pavilion-15-e039tx-laptop-3rd-gen-ci5-4gb-1tb-win8-2gb-graph/p/itmdn4d9wykhdcpz?pid=COMDN4CZGFMGJNTN&ref=1d2b85fc-a03d-4c7d-844b-ec9e8dc95a81 Now I am confused between: Which Processor and chipset is best? How much graphic card is enough? (Not a gamer) Is any of this laptop future proof i.e. it should at least support upcoming latest programming softwares which eats more processor and memory. Laptop will be mainly used for multiprocessing.It should be at least capable for following: Visual Studio 2012 and the upcoming versions for at least 4 years SQL server 2008 R2 and above Sharepoint Blend Photoshop Kindly suggest. If anyone know any good laptop with good configuration in the 50k budget kindly suggest. Thanks in advance.

  Read the article

• DKIM on postfix relay server

  - by Danijel Krmar

  I have a postfix/amavis relay server, with the domain name mail.example.com. It will be a relay for dozens of VPSs, which will have domains like hostname.example.net. So i have actually two questions. Is it possible to dkim sing the mails originating from the VPSs over the postfix relay on the relay server? Or have the mails to be signed on the VPSs where they are actually from? Would a amavis configuration like this be ok? # DKIM key dkim_key('example.com', 'dkim', '/var/dkim/DKIMkey.pem'); # Cover subdomains in @dkim_signature_options_bysender_maps= (): @dkim_signature_options_bysender_maps = ( { # Cover subdomains example.net. '.example.net' => { d => 'example.com' }, }); Or have I misunderstood the whole concept. Do I even need to sign subdomains if they are going over an relay server, or is it enough to just sign the relay server domain?

  Read the article

• configuring DNS zone file and named.conf

  - by tike

  Hi, i was trying to configure DNS in a way so that i could be able to run two domain name. I am able to do one as its preety simple and easy. e.g. test.com now i want to run test1.com in same machine. how do i configure zone file and named.conf. but i have no concept at all. any clue appreciated. thanks Tikejhya.

  Read the article

• Is it possible to create a delta VM?

  - by iTayb

  I have a VM of approx. 18GB. Sometimes I need temporally clones of it, so I clone it. The problems are: * It takes a while until it's done. * Sometimes I happen to need dozen of clones and I'm running out of storage. I wonder if there's a way to create a VM that saves only the delta (difference) since the delployment out of the source machine. That way each new VM's filesize should be 100MB at most, and creating it will be much faster. I've heard that VMWare View is using this concept. Is such a thing possible for ESXi as well? I'm using ESXi 4.1 with VSphere 4.1. Thanks!

  Read the article

• Bare minimal Chef provisioning and deployment?

  - by Andrew McCloud

  I've read the documentation on Chef twice over. I still can't wrap my head around it's concept because they skip but fundamentals and jump to complex deployments with chef-server. Using chef-solo and possibly knife, is there a simple way to provision a server and deploy? I may be wrong, but it seems like with my cookbooks prepped, this should be very simple. knife rackspace server create --flavor 1 --image 112 That provisions my server. I can optionally pass --run-list "recipe[mything]", but how do my cookbooks in ~/my_cookbooks actually get on the server? Do I have to manually transfer them? That seems counterproductive.

  Read the article

• Practical tips when transitioning to xmonad?

  - by meder

  I like the idea and concept of xmonad, however I still keep going back to gnome after an hour or so. This feels like when I first tried to learn vim, but I've gotten past the learning curve point and can't live without vim nowadays. I'm sure the time will come for xmonad too, but I was wondering if current xmonad users can provide transitional tips? FYI, I'm on dual monitors ( 19 inch and 17 inch ). Example of an issue I'm having while in this "transitional" stage: How do you manage keeping the browser and other programs that are most commonly used in full screen mode, since by default I think it opens up in a small tile that takes up a portion of the screen? Do you just shortcut it to make it open full screen, or do you actually not maximize it? Or are there advanced methods through preferences in the conf file, making certain programs take up X space?

  Read the article

• Which CPU for XEN - LAMP testbed - Budget

  - by deploymonkey

  Dear serverfault knowledgeables, im in a decision dilemma right now, which I can't resolve due to lack of hands on experience. I need to build a testbed for basically virtualizing a LAMP application (os'ses not yet decided) including server side calculations. I'll opt for XEN since it seems better supported by cloud hosters at the moment. The hardware is for a proof of concept for a startup doing saas and might be used for closed live alpha/beta later on. After testing, the testbed might be a) deployed as a colocated white box server b) used as workstation Single socket is enough. We want to have ECC memory for reliability, this excludes most of the consumer line at intel. If intel CPU, then threaded cpu (HT) is preferred have at least 16 gig ram If justified by price and reliability is not too bad, a high quality desktop MB instead of a server MB would be worth a try It came down to the opteron 6128 vs. the xeon 5620 for me after a lot of research, but I don't necessarily have to be right. Which CPU is preferrable, concerning TCO (MB price, power requirements 24/7...) , Opteron 6128 or Xeon 5620? Which one offers better performance in real world applications? (Do You have any other suggestions I probably overlooked?) Thank You for Your consideration

  Read the article

• Can I "branch" VirtualBox snapshots (base multiple VM on the same disk image + separate diffs)?

  - by Thilo

  I keep multiple VirtualBoxes for different projects. They are all running the same Debian base system. Keeping complete copies of all the disk images is getting expensive. Is there a way that I can base multiple VM on the same (read-only) disk image, with (hopefully small) diffs layered on top? This is just like snapshots work, except that there is no concept of "current" and "previous", they are more like branches. Or can I just use snapshots (of the "same" VM) for this? I would be wanting to run more than one of those snapshots concurrently.

  Read the article

• Generating my own SQL Server SSL Certificate

  - by Haoest

  I hear it's possible to make myself a test certificate with MakeCert from Windows SDK, but the beast is 1.5 GB, which I feel reluctant to download for a half-megabyte program. I do, however, have IIS Resource kit with me, which has selfssl to generate certificate for IIS. Will that work for SQL Server? Is there a more convenient way of generating myself an SSL certificate for SQL Server use? I even tried using CREATE CERTIFICATE with TSQL within SQL Server and then have it BACKUP into a file, but with no success. I must have confused the concept of certificate fundamentally. Any advice?

  Read the article

• Regression testing for firewall changes

  - by James C

  We have a number of firewalls in place around our organisation and in some cases packets can pass through four levels of firewall limiting the flow TCP traffic. A concept that I'm used to from software testing is regression testing, allowing you to run a test suite against a changed application to verify that the new changes haven't affected any old features. Does anyone have any experience or an offer any solutions to being able to perform the same type of thing with firewall changes and network testing? The problem becomes a lot more complicated because you'd ideally want to be originating (and testing receipt) of packets across many machines.

  Read the article

• Small store infrastructure - where to begin?

  - by KevinM1

  It looks like my older brother is about to change jobs - from lawyer to shooting range proprietor - and since I'm the family 'computer guy' I have the task of coming up with and setting up the in-store equipment. Only problem, I don't know how to start or where to look. I'm a web programmer, not an IT specialist. To that end, I figured I should ask the pros. Users: 3 (myself, my brother, and his business partner) Equipment: 1 Windows (likely 7) desktop for POS software, 1 Windows desktop/laptop for backroom use (bookkeeping, etc.) Other: ?? I'm looking for a reliable and, well, idiot-proof way to handle backups. Neither my brother nor his business partner are tech savvy (A web browser, email, MS Word and Excel are about the extent of their knowledge), so I need something they can handle. On-site would be preferable to off-site, given my brother's hesitance to have sensitive business data be handled by an outside source. I'm also looking for a small on-site server. I estimate that, at most, only 2-3 users will need access. A linux solution would keep costs down, but I'm concerned about Windows <- linux interoperability. Would the store security cameras' storage be handled by the security company, or would we have to stream that data to our own server? I know from my own experience with personal security that the company gives/loans a recording device to the home owner, but I'm not sure about business security. I know this sounds like a shopping list, and it's pretty vague. I wish I could give more detail, but between my own ignorance and things not being 100% nailed down on the business end, I'm a bit stuck. At the very least I'd like a nudge - links on a place to start, what to look for, things I need to think about, etc. - for this endeavor. Thanks.

  Read the article

• TCP Windows Size vs Socket Buffer Size on Windows

  - by Patrick L

  I am new to Windows networking. When people talk about TCP tuning on Windows platform, they always mention about TCP Window Size. I am wondering whether Windows uses the concept of "Socket Buffer Size"? On Windows XP, the TCP window size is fixed. We can set it using the TCPWindowSize registry value. How about Socket Buffer Size? How can we set Socket Buffer size on Windows? Can we set it to a value different from TCP window size?

  Read the article

• keymapping when ssh-ing from mac to linux

  - by Yair

  I'm using Lion to ssh -X to a linux machine and work on some code thats located on it. I open up an editor on the remote machine (usually matlab) and program on it. My problem is that in the linux there is no concept of the command key. So if I want to copy some text from a local window to the editor that runs on the remote, I need to to command-c to copy, and then control-v to paste. This obviously drives me nuts. I was wondering if there is a way to change the keymapping such that the command key will be recognized as a control key on the remote processes. Or is this something I need to change on my local (mac) X configuration?

  Read the article

• Reverse proxy using hop and RDP

  - by Sergei

  I am trying to connect from Vista to XP using RDP via reverse proxy using putty and an intermidiate host. There are myriad articles on the internet how to do it using vnc, ssh servers, winsshd, etc, but I can't find anything that helps me in this specific case. What I have: Windows XP host behind the firewall - 'destination' linux host running ssh on the internet - 'intermediate' windows host behind the firewall - 'source' All I want to do is open reverse tunnel from destination to intermidiate and use this tunnel for connecting back from the source. That should be simple to setup, however I just cannot make it. This is what I do: On 'destination', open putty session, create tunnel to 'intermediate' using following settings: source port 3389, destination is 'source:33389', direction is local On 'source', open putty session, create tunnel to 'intermediate'using following settings: source port 33389, destination is 'destination:33389', direction is local Finally, on source, open termnal services client and connect it to localhost:33389.Unfortunately it seems like packets do go somewhere but eventually client times out. Am I totally misunderstanding the concept? Please help!

  Read the article

• How to enable an active/active file server cluster in windows 2008 r2 Enterprise

  - by Phygg

  I've just created a cluster for my file servers in Windows 2008 R2 Ent SP1 environment. The goal - an Active/Active cluster for web server data How do I go about telling the cluster to be active for both nodes? Do I have to tell the cluster to be active/active? Here is a link to the instructions I followed when configuring the failover cluster. http://technet.microsoft.com/en-us/library/ff182326(WS.10).aspx So if anyone can help me to grasp the concept or maybe I'm way off and I need a node that is not active along with 2 active nodes to do this, I would appreciate it.

  Read the article

• HP/Lenovo alternative to Buffalo iSCSI TerraStation?

  - by Robin Day

  I'm looking at virtualising some of our infrastructure in order to allow for more resiliance and future expandability. We have successfully virtualised on single servers with Direct Attached Storage and are now looking for a more future proof solution using a high powered host (or two) and a SAN (or two). I'm thinking that the host machine will probably be an HP ProLiant DL360 G7 (all of our exisiting infrastructure is HP). Unfortunately, I am new to the world of SANs. From what I can see, the Buffalo Terrastation III is all I would need in order to setup an iSCSI SAN for VMWare to use. However, I'm a little reticent to go that way as it's a bit too "entry level" for my liking. In particular I would be very keen for more redundancy, power, networking, etc. I'm also very aware that you "get what you pay for". Therefore, can anyone reccommend equivalents from the big boys? HP/Lenovo? I have searched high and low on the HP site and seen many options but am struggling to work out if it is all the hardware I will need. Some options appear to need separate controllers from disk enclosures, etc.

  Read the article

• Why do LCD screens need a backlight? (seriously)

  - by Tudor

  Bare with me on this, I'm well aware that most LCDs have backlights. But what if, they DIDN'T? I spend long hours in front of a screen and I hate the concept of staring into a lightbulb all the time and my eyes getting sore. I need to get a new lcd (some sort of IPS that doesn't cost a fortune) soon, but no matter what I'll get, I'll still be looking at a damn light. How come you can read on a kindle w/o a backlight but there aren't any monitors like that? I mean, ideally, a screen should be like a book or any other object in real life. Just for curiosity's sake, does anyone know of any new monitor concepts? Also, http://www.indiaonrent.com/view/l/laptop-transparent-monitor.html hah!

  Read the article

• Recommend a mail server setup for multiple domains

  - by Greg

  Hi all, I've just set up a new Debian web server which I have done plenty of times before, but I want to add a mail server which I have never done before. I am aware of this question, but I would like someone to recommend packages and briefly explain how to use them for providing pop/imap access on multiple domains, a concept that has confused me for a while. I'm planning for this server to grow slowly but surely, from serving an initial 5 or 6 domains to about 20 in the first year, continuing at this rate. (yes, I've jumped on the cloud bandwaggon). At the moment, I have a DNS-A record pointing to my server's IP and nothing else. I'm assuming that I need a DNS-MX record pointing there too, but I haven't read up about it yet so today that's what I'll be doing. Hopefully reading up on the subject and the help that I get here will get my server up and running in no time. Thanks!

  Read the article

< Previous Page | 56 57 58 59 60 61 62 63 64 65 66 67  | Next Page >