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• How can I compare effective power usage of two CPUs / CPU+Mobo+Mem combinations?

  - by einpoklum

  I have this server which does mostly file sharing (with the associated storage). No serious number crunching and it isn't the firewall. My current box has a Celeron D processor (Prescott 336 2.8 GHz); and I'm considering replacing it with a Pentium D (Smithfield 805 2.66 GHz) - for reasons which do not involve performance. How can I know whether one can expect a higher or lower power consumptipn for the change? And how can I estimate the power consumption for each option?

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• How to set default permissions for automounted FAT drives in Ubuntu

  - by piman

  I've got many FAT32 drives that I'd like to mount in Ubuntu such that they have permission mode 700 for directories and 600 for all other files. By default, they have 755 for all files, which is not particularly useful since almost no non-directories should be executable, and it screws up version control repos hosted on the drives. "Back in the day" I would have had the drives listed in /etc/fstab with the umask/dmask I want and there was no such thing as a default. These days, drives automount under their volume names. Which is great, except now I have no idea how to set the default. I have tried changing the /system/storage/default_options/vfat/mount_options gconf key with no apparently effect. It was 077 initially but the mounted drive reflected a default of 022; changing it and re-inserting the drives resulted in the files still having permission bits of 755.

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• Sorting out mSSD acceleration on a Acer M3-581TG

  - by PhonicUK

  I recently purchased a Acer Timeline M3 Ultra, it ships with a 500GB HDD and a 20GB mSSD to use as a cache. First thing I did when I got it was format the drives and install a clean OS (on the HDD, the mSSD has nothing on it) - but now I can't figure out how everything needs to be configured in order to use the mSSD as a cache, it just looks like a standard storage drive. I've poked around in the BIOS and there is a SATA mode setting, but it only has one option (AHCI), most of the documentation I've seen on the subject says that the SATA controller needs to be in RAID mode otherwise 'Acceleration' isn't visible in the Intel SRT menu (which for me, it isn't) I've seen a few things that suggest I just need the correct partition layout, I tried this using fdisk from a Linux LiveCD but got nowhere. Any ideas? The laptop shipped with no recovery media so I'm marginally stumped. I don't have any issue with reformatting again if required.

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• SAS instead of SATA 2 for my hard drives?

  - by jasondavis

  I am building a new system soon, I will have multiple 1-2tb hard drives for storage in it. I only have experience uasing the sataII drives but I saw somewhere that I should be using something like SAS? I read that if I were going to have 20 drives that I could use 4 SAS cables vs 20 SATA cables. Can someone help me understand this better? If it were only 4 cables then how would 20 drives hook up? Also can a regualr sata2 drive hook up to that?

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• jQuery - I'm getting unexpected outputs from a basic math formula.

  - by OllieMcCarthy

  Hi I would like to start by saying I'd greatly appreciate anyones help on this. I have built a small caculator to calculate the amount a consumer can save annually on energy by installing a ground heat pump or solar panels. As far as I can tell the mathematical formulas are correct and my client verified this yesterday when I showed him the code. Two problems. The first is that the calculator is outputting ridiculously large numbers for the first result. The second problem is that the solar result is only working when there are no zeros in the fields. Are there some quirks as to how one would write mathematical formulas in JS or jQuery? Any help greatly appreciated. Here is the link - http://www.olliemccarthy.com/test/johncmurphy/?page_id=249 And here is the code for the entire function - $jq(document).ready(function(){ // Energy Bill Saver // Declare Variables var A = ""; // Input for Oil var B = ""; // Input for Storage Heater var C = ""; // Input for Natural Gas var D = ""; // Input for LPG var E = ""; // Input for Coal var F = ""; // Input for Wood Pellets var G = ""; // Input for Number of Occupants var J = ""; var K = ""; var H = ""; var I = ""; // Declare Constants var a = "0.0816"; // Rate for Oil var b = "0.0963"; // Rate for NightRate var c = "0.0558"; // Rate for Gas var d = "0.1579"; // Rate for LPG var e = "0.121"; // Rate for Coal var f = "0.0828"; // Rate for Pellets var g = "0.02675"; // Rate for Heat Pump var x = "1226.4"; // Splittin up I to avoid error var S1 = ""; // Splitting up the calcuation for I var S2 = ""; // Splitting up the calcuation for I var S3 = ""; // Splitting up the calcuation for I var S4 = ""; // Splitting up the calcuation for I var S5 = ""; // Splitting up the calcuation for I var S6 = ""; // Splitting up the calcuation for I // Calculate H (Ground Sourced Heat Pump) $jq(".es-calculate").click(function(){ $jq(".es-result-wrap").slideDown(300); A = $jq("input.es-oil").val(); B = $jq("input.es-storage").val(); C = $jq("input.es-gas").val(); D = $jq("input.es-lpg").val(); E = $jq("input.es-coal").val(); F = $jq("input.es-pellets").val(); G = $jq("input.es-occupants").val(); J = ( A / a ) + ( B / b ) + ( C / c ) + ( D / d ) + ( E / e ) + ( F / f ) ; H = A + B + C + D + E + F - ( J * g ) ; K = ( G * x ) ; if ( A !== "0" ) { S1 = ( ( ( A / a ) / J ) * K * a ) ; } else { S1 = "0" ; } if ( B !== "0" ) { S2 = ( ( ( B / b ) / J ) * K * b ) ; } else { S2 = "0" ; } if ( C !== "0" ) { S3 = ( ( ( C / c ) / J ) * K * c ) ; } else { S3 = "0" ; } if ( D !== "0" ) { S4 = ( ( ( D / d ) / J ) * K * d ) ; } else { S4 = "0" ; } if ( E !== "0" ) { S5 = ( ( ( E / e ) / J ) * K * e ) ; } else { S5 = "0" ; } if ( F !== "0" ) { S6 = ( ( ( F / f ) / J ) * K * f ) ; } else { S6 = "0" ; } I = S1 + S2 + S3 + S4 + S5 + S6 ; if(!isNaN(H)) {$jq("span.es-result-span-h").text(H.toFixed(2));} else{$jq("span.es-result-span-h").text('Error: Please enter numerals only');} if(!isNaN(I)) {$jq("span.es-result-span-i").text(I.toFixed(2));} else{$jq("span.es-result-span-i").text('Error: Please enter numerals only');} }); });

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• ext4: error loading journal

  - by cloudyOutside

  I have an external hard drive with two partitions: A small FAT32 which is mostly empty and works fine and a large ext4 with tons of data, most of which isn't backed up. The ext4 is visible, but can't be mounted. I get an "error loading journal" error. The drive is a Western Digital Caviar Blue 500GB. Roughly 30GB of that is FAT32 and the rest is the ext4. The light on the enclosure turns red when reading from the bad partition. It was made by Cavalry. There wasn't any warning, but coincidentally, I've been thinking lately that I should get two large capacity drives for real backups. Is there anything that can be done? I'm not even sure I have enough storage to backup everything even if it is redeemable.

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• why is there so much variance in prices for a 2-bay NAS?

  - by jcollum

  I'm considering buying a 2bay NAS for media storage. I'm perplexed by the variety of prices. They go from about $115 to $1200. The only thing I could see that differentiated the high end drive was encryption and a dual gigabit ethernet port. I don't understand how that can add up to $800+ dollars. Clearly I should know why there's this price variance before considering buying a 2 Bay NAS. Newegg link to 2 Bay NAS Should I move this question to serverfault?

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• How to use symbolic links in windows server 2008R2 across the network (mklink)

  - by server info

  I have One Server (Srv1) which holds data with file shares and the storage is full. Now I have second Server (Srv2) which has alot more space. No I would like to transfer all the data von Serv1 to Serv2 and have links to the new destination. I found mklink very useful here but unfortunately it does not work over the network. Which also points the docu out. People heavily rely on the path's so it would be helpful if somone has a pointer for me... how to handle symbolic links a cross the network with Windows Servers. I am running Windows Server 2008. Thanks for any help

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• How can I increase space on the Filesystem linux?

  - by xtrimsky

  I am renting a dedicated server with Parallel Plesk on it (which I hate and I try to use command line). I have a filesystem that is full,"df -H" prints this: Filesystem Size Used Avail Use% Mounted on /dev/md1 4.0G 4.0G 361k 100% / /dev/mapper/vg00-usr 4.3G 1.4G 3.0G 32% /usr /dev/mapper/vg00-var 4.3G 2.8G 1.6G 64% /var /dev/mapper/vg00-home 4.3G 4.4M 4.3G 1% /home none 1.1G 24M 1.1G 3% /tmp tmpfs 1.1G 0 1.1G 0% /usr/local/psa/handlers/before-local tmpfs 1.1G 0 1.1G 0% /usr/local/psa/handlers/before-queue tmpfs 1.1G 0 1.1G 0% /usr/local/psa/handlers/before-remote tmpfs 1.1G 0 1.1G 0% /usr/local/psa/handlers/info tmpfs 1.1G 0 1.1G 0% /usr/local/psa/handlers/spool The server I'm renting has 1TB of hard drive. Why are these so small, how can I increase my storage ? (I'm pretty beginner with Linux). Thank you

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• Are there any benefits to using a Distributed vSwitch for iSCSI?

  - by dunxd

  I am designing our vSphere farm - we'll be migrating from ESX 3.5 to 4.1. I plan to set up a new farm using ESXi 4.1, and move the Virtual Machines on the 3.5 farm into it by shutdown, then import. In ESX 3.5 there is no distributed networking, so each host has a vSwitch connected to my SAN NICs, and a port group for the vmkernel. In vSphere (ESXi 4.1) I have the extra option to set up a distributed vSwitch and distributed port groups for vmkernel to access iSCSI storage. Is there any benefit to this, or should I stick to non-distributed networking for iSCSI.

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• Can't install Ubuntu 12 into VirtualBox (USB not recognized, ISO would not boot)

  - by wvxvw

  I'm trying out VirtualBox 4.18 and wanted to install Ubuntu 12 as a test. After installing VirtualBox (on Debian squeeze/sid), creating a virtual machine for Ubuntu and pointing it in Settings Storage IDE Controllers to the ISO with the proper version of Ubuntu, checked the "Live CD" option. Tried to define the IDE as master / slave, primary / secondary - all to no effect, and trying to boot this system, I'm getting to the screen which says: FATAL: could not read from the boot medium! System halted I've copied the same ISO to the USB stick, and I can boot from the USB (outside VirtualBox). I've looked at couple of tutorials / walk-through, there's nothing I can see that I would've done wrong. So, how would I configure it to boot from the desired ISO? Below is the snapshot with the current settings (sorry, I don't know how to get them as text).

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• Resilient Linux Mail Server Setup

  - by Coops

  How would people design a resilient mail server setup with Linux? On an application level what the system needs to provide is both an incoming and outgoing mail service (i.e. SMTP & IMAP), along with filtering and archive storage (the archive part isn't critical yet, so we'll look at this later probably). What is required on top of this is a resilient system, i.e. one which will handle individual server failures without interrupting service. As such I would term this a High Availability mail system. This is in contrast to a High Performance mail setup, as in our case the volume of mail being handled isn't the important factor, it's simply that it stays online. Having not approached this problem before, the first thing I thought of was a clustered file system (gfs/gluster/etc), combined with heartbeat to failover a floating IP to another box in the case of a server failure. Combined with postfix & dovecot does this sound feasible to people?

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• How do I usb tether my Cyanogen modded G1's internet connection to my Toshiba Tecra 8000 running Xubuntu?

  - by atticus

  I have usb-tethering enabled in my phone. It works fine with Vista. When I plug my phone into my Tecra 8000 laptop running Xubuntu, dmesg shows: "usb 1-1: new full speed USB device using uhci_hcd and address 8". I see that the OS has detected it as a storage device, but I can't get it to function correctly as a network device. /dev/us* shows no usb0, but it does show /dev/usbdev1.1_ep00 /dev/usbdev1.1_ep81 /dev/usbdev1.8_ep00 ... usbdev1.8_ep83 I could just use the wireless tether app for android, but I can't get my Netgear wg511 v2 (made in China) wireless card to work in this laptop either. But that's another post for later.

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• Using Folder Redirection GPO and Offline Files and Folders

  - by user132844

  I want to use Folder Redirection to redirect user's My Documents to a network share. First question is: What is best practices for mapping the drive? Should I use the profile tab in AD with the %username% variable, or a net use logon script, or something else? Second question is: How do I deal with laptops and syncing the network with the local storage? I want to have 2-way syncing so if they manually map their networked home drive and edit it from a different computer, it will sync the newer version to their My Documents folder the next time they connect their normal work computer. I also want to be sure that if they edit a file offline on their laptop while away from the office, that the network version syncs the changes the next time they connect that laptop. Please advise best practices for this scenario in a 2008 R2/Win7 environment. I am also interested in Mac clients for this environment, and while I am very Mac savvy, I would like to hear what others consider to be best practices for Mac network homedirs in a Win environment.

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• Move the ESXi service console from eth0 to eth1.123

  - by Mircea Vutcovici

  I have an VMware ESXi 4.0.0 with 2 physical network cards. First one, eth0, has only the Service Console and the other one, eth1, is a trunk with all VLANs (including the management VLAN used by the Service Console). I would like to free eth0 port to be able to connect a network storage and I would like to move the management IP from eth0 to eth1/VLAN123. Can I do this remotely? Is it possible from vSphere client? Should I do it from the ESXi console?

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• Does ZFS cache Compressed or Uncompressed data in a ZFS file-system with compression turned on?

  - by George Bailey

  ZFS supports file-system compression and it also caches frequently or recently accessed data. If a system has lots of CPU but the underlying data storage system is slow. It is possible that ZFS would perform better with compression turned on. This can be easily tested when writing files by measuring CPU and disk usage and throughput. (of course latency may exist,, but this would not be an issue for large files). But what about cache? If data will have to be decompressed every time it is read then this is probably less of a good idea. Is the cached data compressed?. Does anybody have some information on this?

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• ESXi5 - management services crashes - vms running

  - by Frederik Nielsen

  I have a setup with two ESXi5 servers. We are(were) running with a ISCSi box to server disk for the VM's - however we are in the progress of migrating away from it, because the storage os disk is bad. Now, one of the ESXi hosts has been running for ~20hrs, and it seems like the management services just crashed on that host.. The vms are still running - so it's not really serious. However, I want to fix it. Should I be worried? Will the VM's keep running? The hosts does respond on pings. I am running a vcenter to administrate the hosts. Thanks in advance.

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• Why My Hi-Tech Chemical Compound Lost Its Full Effectiveness?

  - by Boris_yo

  I have bought this thing a month ago: It is so far best dust cleaner that i have ever used and all was well until i left it out of its package for half day. Then it became sturdy and could be torn apart, less sticky and flexible which i video'ed here. Can this item be restored back to fully functioning state as it was before? Maybe it just became dry and i should put it in a place with moisture? Since all was in Chinese, i also do not know the storage conditions that must be met.

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• How can I VPN into a domain and act as if it is local?

  - by Duall

  I've looked and looked and the internet seems to have finally failed me, there's no information on my specific issue. I have two locations, and one server (sbs 2008); I need them to act like one physical LAN. I know it's possible, I just know how to set it up, or anything about VPNs, etc. So, just to clarify a bit more: 1 Small Business Server 2008 ~30 Computers with varying systems from Windows XP to 7 2 Physical Locations I use redirected folders, but since that would consume a lot of bandwith over VPN, I have a machine over there that can be the workhorse for storage. Users need to access e-mail and shared databases from this server (or possibly some form of DFS with aforementioned workhorse) from the other building. Is there a nice tutorial (or I nice person that wants to write it) online that can explain how to set up computers from an external network to act like they were in the LAN?

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• RAID--0 " TWO " DRIVES SSD ONLY Should I use on-board / Software RAID OR a RAID Card / Control

  - by Wes

  I am looking at going with a TWO Drive Only SSD RAID-0 Configuration And was wondering if I would get better performance / Speed from the Use of a RAID Controller / Card Verses just using the Software RAID on my Mother Board. I have herd conflicting reports , Again I only Plan on Running " 2 " SSD Drives in RAID-0 Config I have No- problem spending the extra money for a good controller but only if I am going to benifit performance wise , Otherwise if there is no notable Gain I will just use the Software RAID that my HP-180-T came with Intel- 3.33 GHZ , 6-Core , 12-GB of DDR-3. I have a huge External drive for All Storage and am not concerned about Data loss just looking for pure speed. And if a Controller will benifit my performance Wht type of card would one suggest?

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• Does Intel Smart Response provide any statistics on the cache usage?

  - by Tom Seddon

  I've set up my Z68-based Core i7 PC with a 60GB SSD dedicated as a Smart Response cache drive. Is there any way I can get any statistics out of it? It would be nice to have some information on how much cache space is actually being used, maybe how much of it was actually accessed recently, and how many reads in general are coming from the SSD rather than from the mechanical disk. These statistics might help to quickly provide some evidence for or against the use of Smart Response, without my having to reinstall Windows on the SSD (etc.) to find out. The Windows ReadyBoost feature has some performance counters you can access via the Windows 7 perfmon tool, for example, which is the kind of thing I'm hoping is somehow available. Smart Response provides no perfmon counters, though, and the Intel Rapid Storage Utility tells you pretty much nothing except that Smart Response is switched on.

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• aws s3 works with script but not on cron

  - by user3800017

  guys.. My first post ! hope not the last .. I have few bunch of servers on aws ec2 platforms. I made a simple script to backup my custom logs on their s3 storage bucket. The problem is the script works fine .. but I tried to add it to the crontab. And the script executes but not the s3 sync/mv part ! Here is my code: NOW=$(date "+%b_%d_%Y") MY_HOSTNAME=`uname -n` mv /opt/req/req* /opt/req/bkup/ mv /opt/response/res* /opt/req/bkup/ cd /opt/req/bkup/ tar -cvf ${MY_HOSTNAME}_req_bkup_${NOW}.tar re* rm *.txt aws s3 mv /opt/req/bkup/* s3://req `

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• Building a Server at Home

  - by madhairsilence

  Am left with a Spare PC . So , I thought of converting it to a Server kind of thing. I read about NAS Serer for simple file storage. But it is just a file server. I also play games like counter strike and other online games. So, I would like to use the same server for those purpose., so that a game server will running all the time so that me and my friends can join any time. Is running NAS server a best option or, is there any better arrangement possible so that my spare system can act better than a simple file server

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• Cannot resize an ntfs (Windows Server 2k3r2) boot partition booting from gparted

  - by jshin47

  I am trying to use gparted to make my ntfs system/boot partition larger. I expanded the disk in ESX, providing an extra 60 GB or so of free space. I confirmed that this free space is available in gparted: However, when I try to go to "Move/Resize" the boot partition, there is no unallocated space for me to allocate. It will let me resize the "extended" (non-boot) partition, which makes me think the issue is that the partitions are not contiguous. If it's not obvious, I am no expert in partitioning/storage so any help is appreciated.

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• Which software to use for RAMDISK on Windows 2008?

  - by Tony_Henrich

  I am building a server machine with lots of RAM. At least 16G. I am planning to put my frequently read and written data in RAM so I am looking for software for creating RAM disks. This is for Windows Server 2008 R2 Standard 64bit. Any recommendations? I would like one where I can flush the disk image into persistent storage upon demand. For example when Windows shuts down. (I am aware of all the consequences of data loss when power is lost)

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