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  • Windows7 shows a drive as full in summary but files, including backup folder, shown on drive are ver

    - by Rob
    I have a drive partitioned so it is seen by Windows as 2 drives: C:\ and D:\ Windows7 shows D:\ as full up in the graphical summary in 'My Computer' summary of all the drives, e.g. the bar graph indicates full and nearly all of the drive's capacity, 108Gb, is full. So I go into the D:\ drive to look at the files, I see several folders. I select them all and the right click menu Properties to count their size, expecting the value to be about the same as what Windows reports in the summary, i.e. nearly 108Gb. But the properties shows the files are very small, Kbs and Mbs, nowhere near 108Gbs. One of the folders is a backup, but its size is very small. I've checked the folder options to show all system files and hidden files too - and counted these in the properties. Something invisible is holding the space. What is happening here? I'm afraid to delete anything if it removes valuable backups. Have I got huge backups here? Why can't I see them? How do I see them?

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  • Computer Components

    - by Martin
    What is the role of a motherboard in terms of how components communicate with the processor (via the system busses). Therefore, for each component, which communication bus is involved and what is the route that data takes from the component to the processor, including; The bus name Whether bus is serial or parallel The name of any bridges involved Also, what is the the role of a bridge The components are: Internal components: Floppy Drive, Hard Drive, CD/DVD Drive, Memory, Processor Power supply, Graphics card & Sound card External devices: Monitor, Keyboard, Mouse (PS2 & USB), Printer, Pen Drive I have absolutely no idea of what the routes are and how motherboards communicate, could someone give me a start here? Thanks.

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  • How to choose the most optimal RAID settings on PE2950

    - by javano
    I have some Dell PowerEdge 2950's with 4x 15k, 150GB Cheetah SAS drives in them. They are going to be VM hosts, CentOS running ESXi with Windows Server 2k8 guests. Some guests will be hosting IIS servers, and others MSSQL servers. I am trying to set the RAID virtual disks settings and can't decide which is more optimal given this situation; Read Policy: Out of Read-Ahead, No-Read-Ahead and Adaptive Read-Ahead, the default is Read-Ahead. I will be making large sequential writes initially, writing out blank images for virtual machine hard drives (lets say 30GBs from /dev/zero for example) so Read-Ahead seems good at first. But within the virtual machines reads could be random from anywhere within their file systems as they are IIS and MSSQL servers, so perhaps No-Read-Ahead is a better idea? Now I think Adaptive Read-Ahead would be better then as a compromise but I don't know much about this option, how does it compare in performance to the others? Write Policy: write-back caching, write-through caching, the default is write-back caching. The default of write-back caching is safer than write-through caching but at a performance expense. My thinking here is that in the event of power loss for example, it seems more likely in my head (this is why I need some clarification!) that damage will occur to a guest VM with write-back caching enabled, so I should favour write-through? I have searched around and there is obviously no definitive answer, so I would like to find out what is best for my situation.

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  • what is the fastest way to copy all data to a new larger hard drive?

    - by SUPER user
    I was certain this would have been covered before, but I cannot find an answer amongst all the almost-duplicates that come up; sorry if I've missed something obvious. I have a full 320gb disk inside my machine, a new 1tb disk to replace it, and a USB 2.0 chassis. It is only data on a single partition, no OS/apps involved, and the old drive will be kept somewhere as backup (no secure wiping etc). The simple option would be to put new disk in USB chassis, copy files, then swap them over. But for USB pen drives, reading is around 4x faster than writing. If the same is true for a USB SATA chassis (is it?) then it would be significantly faster to swap the drives first and read from the old drive over USB, right? Then the other consideration is that copying lots of files is usually slower than a single file of equivalent size. Is Windows 7 smart enough to do everything in a single lump like that, or is there specialised software that should be used instead? (Even if SATA-SATA copying is faster than involving USB, knowing what to do when it isn't an option is useful information.) Summary: Does a USB SATA chassis suffer from a read/write inequality? (like a USB pen drive does, but unlike a direct SATA connection) Can Windows 7 do sequential access? (I can't find confirmation if Robocopy does this.) Or is it necessary to use a bootable CD/USB with something like Clonezilla to achieve sequential copy speeds?

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  • Converting legacy GRUB menu entries to GRUB 2

    - by WindowsEscapist
    I would like to change an entry for a solution to boot from CD from legacy grub (looks like title bla bla bla) to an entry to a format compatible to grub 2 (the one that looks like menuentry "bla bla bla" {. The original legacy GRUB entry is as follows: title Boot From CD/DVD Drive kernel /boot/grub/memdisk.din initrd /boot/grub/sbootmgr.dsk Is there any sort of conversion rule to change this to something like the example I've put here on the next line? (This is from my precise's grub.cfg.) menuentry 'Ubuntu, with Linux 3.2.0-25-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail gfxmode $linux_gfx_mode insmod gzio insmod part_msdos insmod ext2 set root='(hd0,msdos8)' search --no-floppy --fs-uuid --set=root efc87ac0-daac-4a32-9a85-ea57beff0e28 linux /boot/vmlinuz-3.2.0-25-generic root=UUID=efc87ac0-daac-4a32-9a85-ea57beff0e28 ro quiet splash acpi_osi= $vt_handoff initrd /boot/initrd.img-3.2.0-25-generic }

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  • Working bootable CD now suddenly freezes at starting point

    - by xolstice
    I have this strange problem with a bootable CD I created that uses floppy disk 1.44MB emulation. The PC originally worked with it just fine and booted from the CD several times from the prior occasions I used it. Now for some strange reason it decides to freeze at the point where it displays the following text on the screen and does not proceed further: Boot from ATAPI CD-ROM 1. FD 1.44MB System Type-(00) The other strange thing is that if I put in a Linux bootable installation CD, it boots that without any issues. Everytime I stick this custom made bootable CD in it pulls this freezing act. Has anyone experienced this or know how to correct the problem?

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  • Win7 Ultimate 64bit not finding my SSD, any ideas?

    - by Jakub
    So I am trying to install Windows 7 Ultimate 64bit on my new SSD (Kingston SNVP325-S2/64GB) and I have unplugged my other drives (for the install only). The SSD is detected by BIOS, I am running the latest Firmware for my motherboard P5N-E SLI (775 socket). Upon getting the Windows 7 install screen, it gives me a 'no drives detected'. I have tried Load Driver and downloding nForce drivers (latest for Win7 64bit signed WHQL) results in a message of (something like) "To continue please click Load Driver and load 32-bit and signed 64-bit drivers... blah blah" ... basically it does NOT accept my nForce SATA drivers, nor my 2ndary SATA drivers (JMicron? can't recall the exact name now). I have tried F8 at loading to 'disable driver signing' in hopes that it was an unsigned driver, however nothing works. The SSD is not detected by the Windos 7 installer. I wasted 4 hours on this last night, and gave up, and got nowhere. Anyone heard / ran into this issue before? How can I get the drive detected? Some more details: - Kingston SNVP325-S2/64GB V+ SSD - ASUS P5N-E SLI MOBO - 8GB RAM A-DATA (memory is checked out and fine)

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  • How to move Mdadm RAID drive (EBS based) to different AWS Instance

    - by Stanley
    We have a media-rich web application that is hosted on AWS. We have several Web Servers and we have an NFS server. On the NFS server (Linux server) we have several EBS volumes that are mounted and we've used mdadm to implement the different mounted volumes as a single RAID volume. The Web Servers simply access the NFS storage through a mount point. Amazon has now let us know that they will be performing power maintenance on this server in a couple of days time. Since all our media is on here it would render our site unusable for the hours while Amazon is working on it. We want to try and prevent this downtime. I was thinking that we can prevent server downtime by perhaps setting up a new server temporarily and attaching the EBS drives (raid volume) to that server and have our web servers point there during maintenance. This is a very high risk operation since this involves several terabytes of our production data. What would be the safe way to move over our logical raid drive (md0) to a new amazon instance? I was hoping that I could start with building the new server, mounting the ebs volumes and assembling the RAID partition using mdadm --assemble --scan before unmounting from the existing instance so that I can first test that everything works and thus having it mounted on two instances at the same time, but I don't believe that is possible with the way that filesystems work. How do I move a Linux software RAID to a new machine? suggests a way to move drives, but isn't really a cloud-based question. Perhaps there are simpler ways to prevent system downtime with our solution being hosted on the cloud? I have considered taking an EBS snapshot, but that tries to replicate all the many terabytes of mounted storage, so this is not a practical solution. Any ideas?

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  • Migrating away from LVM

    - by Kye
    I have an Ubuntu home media server setup with 4.5TB split across a few hard-drives (1x3TB, 2x1TB) and I'm using LVM2 to manage the volumes. I have recently added a 60GB SSD to my server, and I wish to use it to house the 'root' partition of my server (which is currently under the LVM group). I don't want to simply add it to the LVM volume group, because (afaik) there's no way to ensure that the SSD will be used for the root filesystem. If I just throw it at the VG, it may be used to house my media, which would defeat the purpose of having the SSD in the first place. I feel that my only solution is to somehow remove my root partition from the LVM setup and copy it across to the SSD. My boot partition is, of course, not part of the LVM group. My disk setup is as follows: 60GB SSD: EMPTY. 1TB HDD: /boot, LVM space. 1TB HDD: LVM space. 3TB HHD: LVM space. I have a few logical volumes. my root (/), a 'media' volume for my media collection, a backup one for my network backups.etc. Does anyone have any advice as to how to go about this? My end goal is to have the 60GB SSD used for my boot and root partitions, with everything else on the 3TB/1TB/1TB hard-drives.

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  • SBS 2003 boot stalls at acpitabl.dat

    - by John
    I have a SBS 2003 server running for 3 year without any problems, and few days ago it freezes during the boot. System is using two 500 Gb drives in RAID1 (Intel Matrix 7.5) After trying to load in safe mode, boot stops on acpitabl.dat. First idea was that there is a problem with RAID altough disk status was OK, and RAID status was Rebuild. I tried to boot with each drive, and one gives me the same problem, and the other drive is failing to load. Took both drives out, and checked it on a different machine. One drive is dead, other is without any problems. Returned the good drive back in SBS 2003 with changed status to Degraded, but the problem is still the same. I also have a clean SBS 2003 copy installed on this drive (previous installation), which loads smooth and quick. So, I believe the main problem is this installed version of SBS 2003. Did not make any hardware changes, did not make any updates (not sure about any automatic windows updates lately). Since there are tons posts about this problem, and no clear solution, I am trying to figure how to repair SBS 2003 installation, since there are some installed programs on this installation which I cannot re-install without additional issues.

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  • How to auto mark tape as free in DPM 2012?

    - by Massimo
    I have a backup server running System Center Data Protection Manager 2012, connected to a couple of tape drives (no library). I also have, of course, some tapes. Tape rotation is manual. The tape have been used before, by DPM itself (but the server has been completely rebuilt) and by other backup softwares; they are not emtpy. But they contain no data that DPM knows and/or wants to preserve, so they can be marked as free without having to run forcefreetape.ps1. When a tape is placed into the drive, it is required to perform an inventory, have it recognized as an imported tape and then mark it as free; otherwise DPM will simply refuse to use it. How can I tell DPM to automatically treat those imported tapes as free? And, of course, I do not want to reuse real backup tapes if by chance they get put into the drives before their expiration date, so the solution should mark imported tapes as free, but should not do the same with real, non-expired tapes.

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  • Limit copssh users to home directory Windows 7

    - by Siriss
    Hello all- I have found these two sites below: CopSSH SFTP -- limit users access to their home directory only and http://blogs.windowsnetworking.com/wnadmin/2006/11/07/copssh-restricting-users-access/ as well as the Copssh website, but upon completion they do not seem to work. I have copssh installed and I have a separate Windows account "sftpuser" created that is used to connect. The connection works just fine, but I want to limit that user to just their home directory and sub folders. I have 3 hard drives, the C:, a W: and an S: and I want the FTP account to only be able to access the W: drive and its contents (the root of the W: drive is the FTP home directory). Right now "sftpuser" can access all folders, including jump drives to C:, and S:. The linked tutorials do not seem to work, because it seems when I create a group "ftpusersgroup" and add "sftpuser" to the group, and then deny "ftpusersgroup" access to the C: drive, the service breaks and I can no longer login. I have undone everything and am ready to start fresh. Does anyone know how to do this, or is there a better tutorial that someone has or has found? I hope this makes sense. Thank you very much for any help!

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  • Possible boot conflict?

    - by Evan Kroske
    I was installing Ubuntu on a computer on which Windows XP was already installed. The computer has multiple hard drive bays, so I decided to remove the XP HDD and install Ubuntu on a blank HDD when it was the only HDD in the system. Unfortunately, if I now try to boot Ubuntu with the Windows XP drive in the second slot, nothing will boot. However, if Windows XP is in the first slot, it will boot fine. Can anybody explain why this happens? When I was checking out the BIOS to see if something was messed up, I discovered that when Ubuntu is in the first slot, the BIOS doesn't recognize any HDDs. However, if XP is in the first slot, the BIOS recognizes both drives. Any hypotheses about why this happens? Edit: Here's the setup. I have an old server with seven SCSI HDD slots. I have five identical 68 Gb SCSI drives, but I can keep only two plugged in. XP is still installed on the first drive, but I reinstalled Ubuntu on the second drive and had Grub overwrite the XP bootloader on the first drive. Now, the setup works fine, and I can use Grub to load either XP or Ubuntu. However, if I plug in another identical blank HDD in the third slot, the computer recognizes only the XP drive and doesn't boot. Grub starts to load, then gives me a "disk not found" error. Running ls from the grub rescue prompt only shows one drive with two partitions. I guess this is a BIOS problem, but I'd still like to know what triggers it. What about a blank drive could cause the BIOS to freak out?

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  • Decompressing Files on an NTFS Volume from Linux

    - by amphetamachine
    I recently did something stupid on my dual-boot laptop, where I compressed the entire volume to make room for a Linux partition. For some reason, Windows let me compress C:\ntldr. Now I need to get it uncompressed in order for Windows to boot. Here are some of the operating restrictions I have: I do not have access to the BIOS. I cannot boot from CD/USB/floppy. (I installed Linux through PXE) It does not have network access. Is there were some way to specify that the ntfs-3g driver shouldn't compress files even if it thinks it should (if the directory is compressed) when mounting the volume? Or, is there a way to modify the attributes of a directory using ntfstools?

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  • Disk wipe preferences

    - by hmvm123
    I manage a pool of systems that are loaded with software and sent to potential customers for evaluations which often land sensitive information on the drives. Before shipping them back, they typically like a standard wipe to be run to clean out the drives. Most are familiar with DBAN so I try to make sure it can work on my systems. Unfortunately, this means I'm usually in RAID driver hell trying to make sure that the versions out there support the ones my systems are shipping with. These are various kinds of 3ware and LSI ones. Consequently, I have DBAN 1.0.7 working on some, a beta version of 2.0 on the others and 2.2.6 on some of the latest SSD based ones. Now with the LSI controllers on my IBM x3550 M3s (1064/1068) I'm getting no love at all. Is there a way out? Do you buildroot with DBAN and try to piece the drivers together? Any other tools, free or commerical, that stay updated. I'm trying to walk people of varying technical proficiencies through this, so a boot disk with simple choices is preferable.

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  • Recovering drive via boot to Win7 setup command prompt

    - by Valamas
    I am trying to recover data from two old IDE drives. Drive1 has been successful, but something is wrong with Drive2. It does not appear as a drive letter. Due to limited legacy hardware, the only way i can see these drives is to boot using windows 7 setup and goto the command prompt. Without going further as to why, my question is how i can access the data in this command prompt. I discovered DISKPART command and while a first time user, it looked like something that can fix my problem. Here are the results of my diskpart commands. At the bottom is a image of the commands taken with a camera. The Drive2 is present because when using the diskpart command, I can see it. How can I copy the information using a robocopy script if the drive letter is not available? how can I assign a drive letter? Is there any repair command I need to execute? When i execute DISKPART, the following is what i see. DISKPART> LIST DISK Disk### Status Size Free Disk 5 Online 37 GB 2048 KB So then I select disk 5. DISKPART> SELECT DISK 5 "Disk 5 is now the selected disk" When I list partition DISKPART> LIST PARTITION Partition ### Type Size Partition 1 Primary 101 MB Partition 2 Primary 37 GB So I select partition 2 "Partition 2 is now the selected partition." I then try to assign a drive letter DISKPART> ASSIGN LETTER=G "There is no volume specified." "Please select a volume and try again." When i list volume the drive is not present. DISKPART> LIST VOLUME Result of the above commands

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  • My client's solution of a Windows SBS 2011 VM on an Ubuntu host and VirtualBox is pinning the host CPU

    - by Scott Stamp
    Here's my situation, I've got a client hosting two servers (one VM), with the host providing VMware Zimbra, the other Windows Small Business Server 2011. Unfortunately, the person before me had configured this setup as follows. Host: Ubuntu Desktop Edition 10.04 (I know, again, not my choice) running VMware Zimbra 8GB of RAM On-board RAID1 of two 320GB Seagate Barracuda drives for the OS Software RAID5 of four 500GB WD Caviar Black drives on MDADM for bulk storage (sorry, I don't know the model #) A relatively competent quad-core Intel Core i7 CPU from the Nehalem architecture (not suspicious of this as the bottleneck) Guest: Windows Small Business Server 2011 4GB of RAM Host-equivalent CPU allocation VDI file for OS hosted on the on-board RAID, VDI file for storage hosted on the on-board RAID For some reason when running, the VM locks up when sitting nearly idle, and the VirtualBox process reports values of 240%+ in top (how is that even possible?!). Anyone have any ideas or suggestions? I'm totally stumped on this one. Happy to provide whatever logs you'd like to take a look at. Ideally I'd drop VirtualBox and provision this with VMware Workstation, but the client has objected to the (very nominal) costs involved. If hardware needs to be purchased to help, it will be, but we're considering upgrades a last-resort at this time. Thanks in advance! *fingers crossed*

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  • Acer Aspire 5719 with Windows XP does not boot

    - by Sri
    Hi, I have an Acer Aspire 5710 which came pre-loaded with Windows Vista. O/S has been changed to Win SXP SP2 and was working fine till today. The laptop starts up and then hangs (does not reach till the Windows screen). Have tried the following Repair with XP CD. Re-install with XP CD (In both cases the error "No hard disk" is displayed.) Tried F5/F8 to boot with other options. Guess the hard-disk is not being recognised. The 160 Gb SATA disk is shown as IDE0 in the Phoenix Bios. There is no floppy drive. Any suggestions. Thanks, Sri.

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  • How do I install Windows XP from an external hard drive?

    - by Plasmer
    I'm trying to install Windows XP Media Center edition by copying the install disc image to an external hard drive and making it bootable. Has anyone had success getting this to work on systems that can't boot from dvds/floppies? I'm basically working from this guide: http://www.dl4all.com/other/21495-install-windows-xp-from-usb.html Update - 2/15/10 I used WinToFlash on my laptop to format my usb hard drive from my install dvd (Windows XP Media Center Version 2005 with Update Rollup 2 from Dell) and selected "boot from usb device" at the boot selection menu and the windows installer started up. However, an error message came up saying that: "A problem has been detected and windows has been shut down to prevent damage to your computer." Originally on my desktop machine, I had 1 150Gb SATA drive, and 2 150 Gb SATA drives striped together using RAID. From the hard drive diagnostics, it appears the windows install on one of the RAIDed disks lost a block and this has been preventing me from booting up. I replaced the standalone drive with a new 1Tb SATA drive and disconnected the other hard drives. Could the message be indicating a virus is on the unformatted drive? or the usb hard drive? Update 2 - 2/15/10 The external hard drive didn't find any viruses when scanned. I tried installing Vista Home Premium 64bit SP1 using WinToFlash and that installed successfully onto the new 1Tb drive. WinToFlash was really easy to use and helped a lot, thanks!

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  • EXCEL workbook, intermitently, takes 30 seconds to load

    - by Julio Nobre
    I am trying to figure out why a simple .XLS EXCEL workbook is taking, randomly, 30 seconds to open. Before answering: Please, bear mind the following: Problem symptoms Hanging is intermitent and it takes exactly 30 seconds; During hanging there is no cpu or disk activity; It only happens during workbook load. Every runs smooth after that; Windows Explorer.exe hangs on folder, but all other folders, system and applications are still responsive; There are no consecutive hangings. I have to wait for while to reproduce this behaviour; All workbooks where located on a local drive (C:\BPI); The workbook has no macros and no addins; Office 2003 is being used for several years; The computer is running Windows XP; Computer has several network mapped drives, all addressed to main file server; Recently, main fileserver was replaced by Windows 2011 SBS Standard Edition What I have done so far I have traced machine Explorer.exe, using Process Monitor, added Duration column, and filtered by Duration 1. That's is how I found that hanging was taking exactly 30 seconds. For further information, please refer to Oliver Salzburg tutorial. Using Process Monitor, I have also figured out than five operations were taking most of sample collecting duration. Looking at sample image below, column Operation below you will notice that one single operation was taking 29 seconds; I have tried different workbooks (all of them smaller than 30 KB); I have, temporarily, removed all shortcuts on User Document's folder that were pointing to network drives or shares; I have runned CCleaner to fix registry issues; I made sure that there were no external links on tested workbooks; I have reproduced this behaviour for hours; I have extensivelly researched for hours on the web; Process Monitor's collected and filtered data

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  • New SSD, is the MBR broken? DISK BOOT FAILURE

    - by Shevek
    I've been running Windows 7 on a WD 500gb SATA single drive, single partition setup for some time with no issues. I've just installed a new Kingston V Series 64gb SSD and performed a clean install of Win7 to it, deleting the partitions on the 500gb and using that as a data drive. All was well for a few reboots but then I started to get "DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER" messages. If I put the Win7 install DVD back in the drive it boots fine. Tried a clean install again, after replacing SATA cables and swapping SATA ports, with a complete partition wipe of both drives. Again, rebooted fine a few times then back with the "DISK BOOT FAILURE" error. Looked on the web and found some discussions about it so I then started from scratch again. This time I wiped the MBR on both drives using MBRWork, disconnected the 500gb and reinstalled to the SSD. Removed the install DVD and installed all the drivers which involved many reboots, all with no problem. To make sure I also did a few cold boots as well. Reconnected the 500gb, initialised, partitioned and formatted it. Copied data to it and did some more reboots and shutdowns. All was ok. Then out of the blue comes another "DISK BOOT FAILURE" and again, if the Win7 install DVD is in the drive it boots fine. So, is the SSD a bad'un? TIA UPDATE: It was a BIOS issue! I found a hidden away option for HDD boot order, which was separate from the usual HDD/CDRom/FDD boot order option. The WD was set to boot before the SSD... Swapped them round and all is well. Still don't understand how it worked at first though... Thanks Solaris

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  • HP DL185 - very slow disk read speed

    - by fistameeny
    Hi, I have a HP DL185 G6 Server (12 disk model) with the following spec: Quad Core Xeon 2.27GHz 6GB RAM HP P212 RAID controller with battery backup 2 x 128GB 15K SAS 3.5" (RAID-1 for the operating system) 4 x 750GB 7.5K SAS 3.5" (RAID-5 for the data, 2TB usable space) The operating system is Ubuntu Server 9.10. Both drives have been formatted as EXT4. We are finding that read speed of the RAID-5 array is poor. Disk test results below: sudo hdparm -tT /dev/cciss/c0d1p1 /dev/cciss/c0d1p1: Timing cached reads: 15284 MB in 2.00 seconds = 7650.18 MB/sec Timing buffered disk reads: 74 MB in 3.02 seconds = 24.53 MB/sec For info, the RAID-1 array performs as follows: sudo hdparm -tT /dev/cciss/c0d0p1 /dev/cciss/c0d0p1: Timing cached reads: 15652 MB in 2.00 seconds = 7834.26 MB/sec Timing buffered disk reads: 492 MB in 3.01 seconds = 163.46 MB/sec We thought this was because with no battery, read/write cache is disabled. We have bought and installed the battery backup and have used the HP bootable CD to change the cache settings to 50% read / 50% write and check cache is enabled on the drives and the controller. Is there something I'm missing?

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  • How important is dual-gigabit lan for a super user's home NAS?

    - by Andrew
    Long story short: I'm building my own home server based on Ubuntu with 4 drives in RAID 10. Its primary purpose will be NAS and backup. Would I be making a terrible mistake by building a NAS Server with a single Gigabit NIC? Long story long: I know the absolute max I can get out of a single Gigabit port is 125MB/s, and I want this NAS to be able to handle up to 6 computers accessing files simultaneously, with up to two of them streaming video. With Ubuntu NIC-bonding and the performance of RAID 10, I can theoretically double my throughput and achieve 250MB/s (ok, not really, but it would be faster). The drives have an average read throughput of 83.87MB/s according to Tom's Hardware. The unit itself will be based on the Chenbro ES34069-BK-180 case. With my current hardware choices, it'll have this motherboard with a Core i3 CPU and 8GB of RAM. Overkill, I know, but this server will be doing other things as well (like transcoding video). Unfortunately, the only Mini-ITX boards I can find with dual-gigabit and 6 SATA ports are Intel Atom-based, and I need more processing power than an Atom has to offer. I would love to find a board with 6 SATA ports and two Gigabit LAN ports that supports a Core i3 CPU. So far, my search has come up empty. Thus, my dilemma. Should I hold out for such a board, go with an Atom-based solution, or stick with my current single-gigabit configuration? I know there are consumer NAS units with just one gigabit interface (probably most of them), but I think I will demand a lot more from my server than the average home user. Any advice is appreciated. Thanks.

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  • Why do you use a 3PAR SAN? [closed]

    - by Starfish
    If you use a 3PAR SAN, I’d like to hear what you think about it, particularly compared to the HP EVA. What do you see as its advantages over other SANs like the EVA? What’s so special about the ASIC? We had HP quote us an EVA P6500 and 3PAR V400 with equivalent storage and the 3PAR was nearly twice the cost. My site has two EVA SANs with a combined capacity of ~80 TB. We want to replace the older and larger of the two. We’ve been looking at the EVA and the 3PAR to see which would be a better fit for us. I’m struggling to understand how the 3PAR differs from the EVA from a practical technical standpoint. When I read the sales literature and speak with the HP sales engineers, they spend a lot of time talking about how the 3PAR is better because of its ASIC. It’s ASIC this and ASIC that, but when I press them on how a 3PAR with thin provisioning is better than an EVA with thin provisioning, I can’t get a straight answer. Meanwhile, one of my colleagues, who has more say regarding which SAN we get, is enamored by the 3PAR, and he can’t explain clearly to me why he wants it over the EVA. Our needs are pretty simple. We have 10 servers running VMware and ~100 VMs. We use VMware’s thin provisioning currently, but we would like to start using thin provisioning on the new SAN. We don’t have a need for SSDs or migration between storage tiers. We plan on having FC or SAS drives for our most used data and SATA/FATA drives for the lesser used data which is how we have the EVAs configured. We also do not need any SAN-level snapshotting or replication.

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  • UPS power requirements for server

    - by captainentropy
    Greetings! So, I just placed an order for a new server. The company recommended that I get a 3000W UPS. (!) As best as I could I calculated the following wattage consumption based on benchmarked data or datasheets provided by the manufacturers of each component: number watts **total watts** MoBo 1 240 240 CPUs (E5540) 2 80 160 RAID cards (3ware) 2 18 36 RAM (6x4GB) 6 3 18 DVD drive 1 7 7 floppy 1 2 2 RE4 drives 8 7 56 WD20 drives 8 6 48 Intel X25 SSD 2 0.15 0.3 total = 567 So that is for the PSU requirements only. The PSUs in the machine are a 720W for the master node and 800W each for two subsystems. That's a total of 2320W that can be delivered by these PSUs. But that is 4X the amount being consumed, at most, by the components. I didn't count case fans or the eSATA card (3W maybe?) or what the PSUs themselves require but assuming I double or triple my calculations I'm not even remotely close to the 3000W UPS I was suggested to get. They run at least $1100. I could get a 2000W for about $750 or a 1500W for $450 and still be well over my estimated power need. I don't think I need a whole lot of run time in the case of a power outage, maybe 20 minutes max, enough time to shutdown if the power doesn't come on within 5-10 minutes. Any thoughts? Am I off on my calculations? Did I overlook something major? If so what are your suggestions for a UPS? Thanks!

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