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  • Problem with an application in USB

    - by rajivpradeep
    I have an application on a pen drive, which executes some flash files on the same USB flash drive. when i run the application with in the drive, the application just keeps running in the back ground without running the flash files. When i copy the application on desktop, it runs the flash files in the USB. Also i programmed the app to write log file, when i run the application with in USB, the app is running but the log file is not getting written, when i remove the pen drive, the file gets written. What might be the problem, I am using VC++ , VS 2008 to build the application.

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  • Can the Dell PowerEdge T320 boot from a USB stick in hard drive emulation mode?

    - by Icydog
    I am trying to install FreeNAS on a Dell PowerEdge T320. I've followed the instructions here (http://doc.freenas.org/index.php/Burning_an_IMG_File) to write the .img file to four different USB sticks with dd if=FreeNAS-9.2.1.5-RELEASE-x64.img of=/dev/sde, but I can't boot off of any of them. When I try to boot, I get the following screen: F1 FreeBSD F2 FreeBSD F3 Drive 0 Then it auto-selects F1 and either prints # about once a second forever, or it sits with a blinking cursor doing nothing. Forum posts and the wiki page linked above say to set the USB boot emulation mode to hard disk (as opposed to auto or CD/DVD/floppy), and older Dell PowerEdge models including the T310 have this option in the BIOS settings, but I cannot find it on the T320 with the latest BIOS 2.1.2. I have even tried writing the USB image to a USB hard disk, but with the same lack of success. Has anyone been able to find this USB boot setting on a T320, or been able to boot FreeNAS/FreeBSD from USB in some other way on a T320?

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  • Connecting Dell PowerVault NAS to ESXi

    - by Matt Fitz
    Just got a Dell PowerVault NAS storage device running Windows Storage Server Standard which includes NFS. When I try and connect the ESXi server I get the following message: Call "HostDatastoreSystem.CreateNasDatastore" for object "ha-datastoresystem" on ESXi "powerhouse" failed. Operation failed, diagnostics report: Unable to complete Sysinfo operation. Please see the VMkernel log file for more details. I am pretty sure it is a username/password type thing. Not sure were to begin though. Also, I am planning on using "Username Mapping" instead of Active Directory. Any ideas would be greatly appreciated

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  • many partitions on a single filegroup?¿ does it make sense?

    - by river0
    Hi, I'm designing a datawarehouse solution and I'm a newbie in disk configuration issues, let me explain you. Our storage is spread over 6 storage enlosures having each of them 5 raid-1 disk arrays, and having 2 LUNS defined per each disk array, which makes a total 48 LUNS (this is following Microsoft fast track recommendations for datawarehouse architectures). I would like to partition my data, on other projects I have worked before, we always followed a 1 partition - 1 filegroup rule. On the microsoft fast track recomendations it is advised to create a filegroup and then for that filegroup a data file per each lun... but I pretend to have a week level partitioning... if I apply that rule I think that I'll get too many files and a complex layout. I'm thinking of just creating just one filegroup (with the 48 lun data files), but still create the partitions since I want to keep soem of the benefits of partitions like partition switching... Is this scenario not recommended? What would you suggest?

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  • How to hack airport extreme to support USB 3G modem?

    - by Mike Caron
    Has anyone out there ever tried to hack the Airport Extreme, specifically with regard to the USB port? There are many cellular routers available that provide WiFi sharing of a USB modem link. However, instead of buying yet another router, I'd like to use my expensive Airport Extreme with it. The AE has a USB port on the back, but it's been said that it only talks to printers. Is there a way to hack the USB driver on the AE to allow it to recognize a USB modem, then use that as the connectivity instead of the LAN? I would imagine that one could use OpenFirmware to boot something on the AE. If one can boot it, then one could provide access using SSH across the lan. Once access is granted, then let the hacking begin... but I don't know how to (a) get the mini-osx on to USB (is it the same as the ATV without a UI?) or (b) how to load up certain things once boot has begun.

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  • Question regarding an NAS server and remote users

    - by JB
    I have a client that requires a massive amount of storage space but: Doesn't want to spend very much money Needs remote users (across the country) to be able to pull data from it and store to it, as well. Can this be done with an NAS Server such as the Western Digital Sharespace Network Storage System? I do not believe the client wants to spend over $1400 and HP is offering 8TB for $1299. Also, if anyone has any other ideas besides using NAS, please let me know. Thanks in advance for any help.

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  • Windows 2008 terminal server - How to restrict access to DVD/floppy?

    - by test1839
    I has a very simple task. I need to block access to removable media (CD, DVD, floppy, USB drives etc.) on a Windows 2008 R2 Terminal Server for users and allow it for admins. I tried to enable the following policy in GPO: User Configuration/Administrative Templates/System/Removable Storage Access All Removable Storage classes: Deny all access = Enabled But it did not work. I tried different physical and virtual 2008 servers with the same result. It works on Windows 7 but not on Windows 2008. Has anyone had success with this parameter on Windows 2008? Thank you

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  • Server vendor that allows 3rd party disks

    - by Alvin S
    As noted here, Dell is no longer allowing 3rd party disks to be used with their latest servers. As in, they don't work period. Which means that if you buy one of these boxes and want to upgrade the storage later, you have buy disks from Dell at significant premiums. Dell has just given me a very strong reason to take my server business elsewhere. My company buys (instead of leasing) our servers, and typically uses them for 5 years. I need to be able to upgrade/repurpose storage periodically, and do not want to be locked in to whatever Dell might have in stock, at inflated prices to boot. As you will see in the comments of the above link, it seems HP is doing the same thing. I am looking for a server vendor that offers 3-5 year warranty with same day/next day onsite service, and allows me to use 3rd party disks. Suggestions?

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  • best filesystem for an aws s3 like service

    - by gucki
    Hi! I need to build a fault tolerant, highly available key/value storage (no posix, only same functionaluty as S3) using cheap existing hardware. The storage should be able to handle several billions of items. The maximum size of items is around 1GB, most are only several KB. What's the best software/ filesystem for this task? I already had a brief look at mogilefs, mongodb (grid-fs) & glusterfs but I'm not really sure which is stable & fault tolerant enough. The simpler the setup and later expansion the better :). Corin

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  • Advantage of using nexenta vs. OpenSolaris

    - by jotango
    I am currently building a NAS for about 24 TB of storage. Video files, slow access, long term storage. No performance issues. I am currently undecided between buying a JBOD case and installing OpenSolaris (because of ZFS), or purchasing a Nexenta license. The difference is about $ 12.500 for licenses over three years. What would you see as the main advantage in purchasing a nexenta license, beside the support? Did nexenta really enhance the basic OpenSolaris, or is it just a lot of marketing speak? No one really wanted to answer that question.

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  • Alternatives to FTP

    - by Jack Hickerson
    I need to share files with clients outside of my business and unfortunately our FTP server is becoming too much of a hassle (with regards to clients use of an ftp client and creating password protected downloads based on customized account privileges) Essentially, I need: a remote service that mimics an FTP server with a web interface (easy for basic internet users to comprehend). over 100gb of storage file transfer size over 2gb customizable user account privileges (password protected downloads) secure storage and data transfer preferably less then $100/mo I have already looked into some services that almost meet my requirements (StreamFile.com, box.net, onehub.com, filesanywhere.com)- has anyone used a service they would recommend? cheers, jack

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  • How can I connect a SAS drive to USB? [closed]

    - by dave
    I have a Dell T710 with Seagate Cheetah 15k.7 SAS disks. If the T710 motherboard dies, I'll need to resort to one of my nightly off-site backups and salvage the journal/logfile from the SAS disk to bring the backup bang up-to-date. I need a way of reading the healthy-but-inaccessible SAS disc that does not depend on the only SAS-capable machine I have to hand. So I bought: SAS to SATA Adapter and: USB 2.0 to SATA Adapter with Power ...so that I could read the SAS drive via USB. I can plug it all together just fine. The chain looks like: USB - SATA - SAS. But the drive does not spin up and the computer doesn't even acknowledge anything being attached by USB. Is there a cheap external enclosure I can buy for SAS drives? I can't believe these USB to SATA adapters are everywhere but the USB to SAS adapters are almost non-existent...

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  • Effecient organization of spare cables and hardware

    - by Jake Wharton
    As many of you also likely do, I have a growing collection of cables, hardware, and spare parts (screws, connectors, etc.). I'm looking to find a good system of organization so that everything isn't a tangled mess, mismatched, and potentially able to be damaged. Since the the three things listed above are all have varying sizes and degrees of delicacy this poises an interesting problem. Presently I have those cheap plastic storage bins you find at Wal-mart for everything. Cables that were once wrapped neatly have become tangled due to numerous "I know I have a cable for this" moments. Hardware is mixed in other bins with odds and ends with no protection from each other. NICs, CPUs, and HDDs are all interacting and likely causing damage. Finally there are stray parts sprinkled amongst these two both in plastic bags and loose. I'm looking to unify this storage into a controlled chaos. Here are my thoughts: Odds and ends are the easiest. Screws, connectors, and small electronic parts lend themselves perfectly to tackle boxes and jewelry boxes. Since these are usually dynamically compartmentalized I can adjust for the contents and label them on the outside or inside of the lid. Cables are easily wrangled with short velcro strips but that doesn't stop them from being all mixed in together. Hardware is the worst offender. Size, shape, and degree of delicacy changes with nearly every piece. I'm willing to sacrifice a bit of organization for a somewhat efficient manner. What are all your thoughts? What is the best type of tackle or jewelry box to use? Most of them are cheap and flimsy. Is there a better alternative? How can I organize cables to know exactly (within reason) where one is? What about associating cables with hardware (Wall adapter to router, etc.)? What kind of storage unit lends itself to all shapes of hardware? Do I need to separate by size or degree of delicacy for better organization?

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  • VMware ESXi 4 On-Disk Data Deduplication - possible and supported?

    - by hurikhan77
    Environment: We are running multiple web, database, and application servers which usually share a pretty common installation (gentoo linux) and similar configuration in VMware ESXi 4. The differences are usually only some installed features or differing component versions. To create a new server, I usually choose the most similar (by features) running server, rsync a copy of it into freshly mounted filesystems, run grub, reconfigure and reboot. Problem: Over time this duplicates many on-disk data blocks which probably sums up to several 10's of gigabytes. I suppose if I could use a base system as template with the actual machines based on top of that, only writing changed blocks to some sort of "diff image", performance should improve (increased cache hit rate) and storage efficiency should increase (deduplicated storage space). This would be similar to what ESXi already supports for RAM deduplication (page sharing). Question: Is there any way to easily do this on ESXi 4? I already share the portage tree via NFS but this would not work for the rootfs.

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  • Fast, reliable data transfers from/to China

    - by Nils
    We are a small company and we will need to transfer rather large amounts of data (10GB+ each time) between Europe and China in the near future. As many may have experienced, Internet connections to or from China can be rather unreliable and slow at times without any apparent reason. For example, while sending data to China via FTP generally works well, it can be painfully slow in the other direction. Currently, we are investigating new ways to have high transfer rates in both directions. So far we have tried: FTP (see above) FTP over VPN services (generally slower than direct connections) F2F (like Retroshare or Freenet - slow!!) Aspera (fast but expensive!) BitTorrent (unreachable end nodes, b/c of firewalls which we must not configure) We would like to try: Cloud storage (e.g. Amazon S3, Google Storage) - are those services always and reliably reachable from inside China? Point-to-Point VPN (currently not possible, b/c of the network, see above) I'd be especially grateful to hear from people who have already dealt with this kind of problem before.

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  • What disk setup is needed / best practice for hypervisor-only servers?

    - by Luke404
    Planning to buy some servers to run an hypervisor (Citrix XenServer or VMware vSphere, still have to decide between the two) we'd like to boot off the local redundant SD card module offered by various vendors (eg. Dell, HP, etc...). The actual VMs will run from an existing iSCSI SAN (which, by the way, can't support booting the servers directly off the SAN). What are the reasons, if any, to choose completely diskless servers VS having some local storage? And what would be the guidelines to choose that local storage? (number of spindles, raid level, etc)

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  • Network Drive Via Ethernet Port for Speed?

    - by Yar
    I have a Macbook with Firewire 400 and USB 2.0, so the only way I can get fast external storage is through the Ethernet port. A really fast firewire 800 drive on ANOTHER computer is actually much faster than the built-in drive (according to XBench). So I thought I would try to go one better and buy an ethernet-ready drive. I bought a Seagate GoFlex™ Home Network Storage System, and it seems like the only way to get it to work is to plug it into a router. Can this drive be used without a router (i.e., direct to computer)? Are there any drives that can be plugged directly into the ethernet port for fast access? I don't want the drive on my router: I want it on my computer. Ideally I'd need 7200rpm or faster, too... Update: Just chatted with Seagate and they said that this particular drive will not work that way. Will any others?

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  • Any experience with SATA SAS Interposer Cards?

    - by korkman
    Driven by the current price difference between SATA and SAS disks on one side and the potentially bad behaviour of SATA disks in bigger storage arrays on the other side, I have found so-called SATA-to-SAS interposer cards. Advertised as "seamlessly adding SAS capabilities to existing SATA disk drives", I wonder if anyone here has had some experience with these or similar products. The major benefits I can identify are the increased cable voltage (if all drives are SAS connected), the ability to power-cycle the drive and multipath (if desired). Obviously the SATA drive will still have to be RAID edition. The question is: Do these cards indeed increase the overall reliability of a storage system, or will failing SATA disks cause trouble nevertheless? Edit: I'm not asking for hypothetical answers, only actual experience please. I'm well aware that the typical 10k SAS drive is more reliable (and better performing) than 7200 SATA drives. But how does a nearline SAS, which is phyiscally the same disk as its SATA counterpart, compare to the SATA version with interposer?

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  • What is the "real" difference between a NAS and NFS?

    - by warren
    From an end-user perspective, what is the difference between a NAS device and using NFS exports from a file server? They seem to accomplish the same end result. The difference between a SAN and other file storage is related (in my experience) to how they are connected to the server infrastructure. However, the difference between a NAS, connecting over standard ethernet, and NFS (sharing storage off specific servers, also over the network), seems more nebulous. Is there a good reason to pick a NAS filer over NFS on servers?

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  • How do I make an external hard drive keep the same drive letter permanently?

    - by andygrunt
    I have a desktop PC (2002 vintage) running Windows XP that I turn on about 2 or 3 times per week. I have a mains powered 250Gb Western Digital hard disk connected to it via USB. I always turn the hard disk on before the PC so it's up and running as the PC boots. When I first connected the external hard disk, the PC assigned it a letter ('i' if it matters) and I've installed software to it, created shortcuts to various files and folders on the disk using that letter. For years everything was fine then I would boot the PC and the hard disk was assigned a different letter. I'd then have to go into 'my computer/manage/disk management' and manually change the letter back to 'i'. If I then rebooted the PC, the hard disk would usually still be 'i' but after the next reboot would be some other random letter and I have to manually change it back to 'i'. This would go on for some time then there'd be periods when the it would always be 'i' then, for no apparent reason (no new devices added, for example), the drive letter would start changing again. At the moment it's in random drive letter mood so I thought I'd ask the following question... How do I assign the external hard disk to be 'i' permanently? Answer: Thanks Molly that seems to have done the trick (after a little fiddling) - slightly disappointed there wasn't a way to do it within Windows without installing something else though. For anyone else trying this, it wasn't completely straightforward so here's what happened with me. I installed USBDLM as per the instructions on its website. I guessed that I had to assign the first USB letter to i so replaced the 'Letter1=' lines to 'Letter=I' in the ini file. To test it, I rebooted the PC only to find it came back up with the display set to 640x480 in 16 colours. After some investigation, I re-installed the display drivers and rebooted and set the display back to its usual setting. The external hard disk now gets set to 'i' but I found I had to re-apply sharing status to it so it was seen from my laptop which is on the same network. The end result of all this is that it now does what I wanted although it does act as though the hard drive has just been plugged in a few seconds after the Windows desktop appears i.e. the little box appears with a progress bar as it searches through the contents of the 'new' hard drive and I eventually get a dialogue box saying 'This disk or device contains more than one type of content. What do you want Windows to do?' and lists options such as play media files, print the pictures or open folder to view the files. This is a tiny pain I wish didn't happen but not exactly a huge price to pay. Other than that - it seems to work fine :) Looks like a spoke too soon... Every time I reboot, I have to re-share the 'i' drive (which I didn't have to do before) so it can be seen by my laptop on the same network. Any ideas how to make that permanent?

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  • Email server - Disk quota sizes - suggestions?

    - by Ian H
    Working out a new server for an agency of 200 Employees - with approx 240 email accounts. Internally I'm arguing with myself over the amount of drive space to allocate to each user for the disk quota, I'm just looking for suggestions. Once i have a quota size decided, it will define the solution for storage. I've had everything from 4 GB per account ( which i feel is being generous ) down to 500 Mb ( with is rather restrictive in today's day and age. ) Thing is 4 GB per acocunt is just under 1 TB of allocated storage for email alone. Does anyone follow a "rule of thumb" or have thoughts on this? thanks in advance

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  • Amazon S3: allow users to upload on a restricted basis (per bucket maybe)?

    - by Tom
    Hi there, I'm thinking about signing up to the Amazon S3 storage service. What I want to do is create a service where other people can register their own bucket with a certain amount of storage. These users will install my software, which then uploads their files. Of course, the users may only upload what they have paid for. For this to work I would like to create a separate bucket for each customer, each with its own properties. Question 1: is this possible with the API? How? This means that the installed software must have the rights needed to upload to my Amazon S3 account. Question 2: can I create individual authentication IDs for each bucket or customer, so that they can only upload with restrictions I have set? Thanks in advance.

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  • What is the "real" difference between a NAS and NFS? Or, why pick a NAS device over "mere" NFS?

    - by warren
    From an end-user perspective, what is the difference between a NAS device and using NFS exports from a file server? They seem to accomplish the same end result. The difference between a SAN and other file storage is related (in my experience) to how they are connected to the server infrastructure. However, the difference between a NAS, connecting over a standard ethernet port, and NFS (sharing storage off specific servers, also over the network), seems more nebulous. Is there a good reason to pick a NAS filer over just running NFS on servers?

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  • running an android app on the device instead of on the emulator.

    - by gil
    hi, I've installed the usb driver, i'm running win7. I can see that the driver is installed in the window-android SDK and AVD manager-installed packages but when i'm writing "adb devices" in the cmd it doesnt show like the phone is connected (it is - it has the orange led on..) I'm using the HTC G1. I also did the "Turn on "USB Debugging" on your device" step... anyone got an idea??

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  • Get drive type with SetupDiGetDeviceRegistryProperty

    - by new
    Dear all, I would like to know whether i can get the drive information using the SP_DEVICE_INTERFACE_DETAIL_DATA's DevicePath my device path looks like below "\?\usb#vid_04f2&pid_0111#5&39fe81e&0&2#{a5dcbf10-6530-11d2-901f-00c04fb951ed}" also please tell me in the winapi they say "To determine whether a drive is a USB-type drive, call SetupDiGetDeviceRegistryProperty and specify the SPDRP_REMOVAL_POLICY property." i too use SetupDiGetDeviceRegistryProperty like below while ( !SetupDiGetDeviceRegistryProperty( hDevInfo,&DeviceInfoData, SPDRP_REMOVAL_POLICY,&DataT,( PBYTE )buffer,buffersize,&buffersize )) but i dont know how can i get the drive type using the above.. Please help me up

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