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• Optimal Configuration for five 300 GB 15K SAS Drives

  - by Bob

  I recently acquired an HP Z800 workstation that has five 300 GB 15K SAS Drives. This system will be dedicated to running multiple virtual machines under VMware Workstation (Note: I'm not using ESXi because I do plan to use the system for other purposes.). For the host OS, I plan to install RHEL 5. My number one concern is guest performance. For example, should I create a RAID 10 array for the OS and virtual machine storage with four of the drives and reserve the 5th? Or, is there a solution that will provide better performance?

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• Organizing files relationally in Windows 7?

  - by Cayetano Gonçalves

  I just took a new job as a policy analyst, and after even one week keeping track of hundreds of files- lawsuits, legislation, letters, etc- in Windows 7 is proving difficult. In my last job I was a database architect and I helped build Linux based servers to track files among an entire department, however there is no way for me to do that at this time in this job. Is there any way to track files/indices/locations/tags/themes and store them in some kind of RDBMS system, instead of storing the files in folders that only allow for flat and fixed storage? For example, if I have a file that deals with: ELID organization Appeals court John Smith It really is inconvenient to have to decide which one of these tags to create into a folder and place the file into it, when it falls under all the categories. Even if I could place tags the way you can in Stack Exchange on files, it would solve a lot of heart ache.

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• MySQL keeps crashing OS server.. Please help adjust my.ini!

  - by TruMan1

  I have MySQL 5.0 installed on a Windows 2008 machine (3GB RAM). My server crashes on a regular basis (almost once a day) with this error: Changed limits: max_open_files: 2048 max_connections: 800 table_cache: 619 I did not use the heavy InnoDB .ini file, although I am rethinking that I should have? I am worried that big configuration changes will make my current sites stop working. What should I do? Here is my current ini settings: default-character-set=latin1 default-storage-engine=INNODB max_connections=800 query_cache_size=84M table_cache=1520 tmp_table_size=30M thread_cache_size=38 myisam_max_sort_file_size=100G myisam_sort_buffer_size=30M key_buffer_size=129M read_buffer_size=64K read_rnd_buffer_size=256K sort_buffer_size=256K innodb_additional_mem_pool_size=6M innodb_flush_log_at_trx_commit=1 innodb_log_buffer_size=3M innodb_buffer_pool_size=250M innodb_log_file_size=50M innodb_thread_concurrency=10

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• Optimal Configuration for five 300 GB 15K SAS Drives

  - by Bob

  I recently acquired an HP Z800 workstation that has five 300 GB 15K SAS Drives. This system will be dedicated to running multiple virtual machines under VMware Workstation (Note: I'm not using ESXi because I do plan to use the system for other purposes.). For the host OS, I plan to install RHEL 5. My number one concern is guest performance. For example, should I create a RAID 10 array for the OS and virtual machine storage with four of the drives and reserve the 5th? Or, is there a solution that will provide better performance?

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• I've created a software RAID on SUSE EL 10 and now I need to monitor it.......

  - by Thomas B.

  I have created a Software Raid using the yast2 GUI on SUSE ES 10/11. The raid works great and it's a raid 5. I have 5 Drives they are cheap 2GB Cases that have 2 - 1TB Drives in each case (Serial ATA Drives) and I connect them in via Esata to the motherboard. The problem I have as this is "cheap" storage when of the the 5 drives goes out on the RAID I seem to have no logs of any issues and it get's harder and harder to write to it until it dies. I use SAMBA to mount the 4TB parition to my PC's in my home on a GIG network. My question is this, are there any good (Free) tools in Linux to monitor a raid or the drives on the raid to detect any problems??? I haven't found any yet and was just wondering if some exist.

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• User accounts in FTP

  - by Brad

  I have an FTP server(proftpd on debian) that I'm going to allow a couple friends access to, and I want some safety nets in place, just in case. These are some of the things I'd like to do: Jail the accounts to their home directories and impose a cap on the amount of data they can upload Allow them access to a shared folder(via symlink or something) where they have full access(Also with a storage cap, but larger) Allow my own account full access to the system(Using groups I guess) Not allow anonymous access, or allow it with its own folder, separate from the shared user folder Currently, I've got the accounts set up and jailed, but it seems like the symlink that I put in is not allowing them to visit the shared folder. I suppose this has to do with them not having read permissions anywhere but their own home directories, or maybe it's something else, I'll continue to look into it and provide any information that is requested. Is what I'm trying to do possible? Any tips or resources that you can share are appreciated. Thanks.

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• Retrieving a specific value from "df -h" using shell

  - by Diego Dias

  When I use df -h, I get the following output: Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 59G 2.2G 54G 4% / /dev/sda1 122M 38M 78M 33% /boot tmpfs 1.1G 0 1.1G 0% /dev/shm 10.10.0.105:/somepath 11T 8.4T 2.1T 81% /storage4 10.11.0.101:/somepath 15T 8.9T 5.9T 61% /storage1 /dev/mapper/patha 5.0T 255G 4.8T 5% /storage5_vol0 /dev/mapper/pathb 5.0T 195G 4.9T 4% /storage5_vol1 /dev/mapper/pathc 5.0T 608G 4.5T 12% /storage5_vol2 I want to write a script that gets the value of Avail column on a specific storage. I used to use df -k /storage_name | tail -1 | awk '{print $3}' But the FileSystem column can have a value or not .. which would change the variable of my script from $3 to $4. How can I get the Avail on a single command line even if there are no values on the previous columns?

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• How to configure HA iSCSI for Solaris 10

  - by Noah

  BACKGROUND: We have a StarWind NAS that we are currently using for High Availability storage with our Windows network. Starwind has mirrored drives and multiple ip paths, that the Windows Server combines into one HA disk store. QUESTION: How do I accomplish the same thing under Solaris 10? I've looked at ZFS but to document seems to indicate that ZFS wants to do its own raid/mirroring. I can also attach via iSCSI from Solaris and am presented with both drives being served by the Starwind NS. So, how do I configure solaris so that disk M1 and M2 are considered as a single fault tolerant drive?

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• File store: CouchDB vs SQL Server + file system

  - by Andrey

  I'm exploring different ways of storing user-uploaded files (all are MS Office documents or alikes) on our high load web site. It's currently designed to store documents as files and have a SQL database store all metadata for those files. I'm concerned about growing out of the storage server and SQL server performance when number of documents reaches hundreds of millions. I was reading a lot of good information about CouchDB including its built-in scalability and performance, but I'm not sure how storing files as attachments in CouchDB would compare to storing files on a file system in terms of performance. Anybody used CouchDB clusters for storing LARGE amounts of documents and in high load environment?

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• Mount Docker container contents in host file system

  - by dflemstr

  I want to be able to inspect the contents of a Docker container (read-only). An elegant way of doing this would be to mount the container's contents in a directory. I'm talking about mounting the contents of a container on the host, not about mounting a folder on the host inside a container. I can see that there are two storage drivers in Docker right now: aufs and btrfs. My own Docker install uses btrfs, and browsing to /var/lib/docker/btrfs/subvolumes shows me one directory per Docker container on the system. This is however an implementation detail of Docker and it feels wrong to mount --bind these directories somewhere else. Is there a proper way of doing this, or do I need to patch Docker to support these kinds of mounts?

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• Power User - archive Outlook mail items into SQL Server

  - by marc_s

  I am looking (and so far not finding any) for a solution to archive e-mail items from my Outlook into SQL Server. My PST is beginning to get really really big, and I'd love to extract my older e-mail into SQL Server in a way so I can still easily find mails if needed. I would prefer SQL Server as the storage medium since I'm familiar with it, and it's rock solid - I don't want to have a collection of PST files or CHM files or anything like that. Does anyone know of such a solution? I'm a power/home user - I can't afford $5'000 enterprise licenses - I need a sub-$100 solution for private use.

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• Completely replacing (upgrading) a RAID 5 array of disks on an ESXi server

  - by jshin47

  I have a development server that runs several VM on ESXi 5. It has an array of disks in the RAID 5 configuration where all of the disks are currently the same size. I would like to expand storage on this box greatly, but I am not sure what the smartest way to go about this would be. My current plan is to: Turn off all VM Copy VM folders from server to another location Verify that I can mount all the VM on the new location (ie that the copy went ok) Replace all the disks with new, bigger ones Reinstall ESXi5 Copy the VM back over This seems like it might take a while to accomplish and is not terribly slick, especially since I will have to reconfigure ESXi 5, but is there a smarter alternative?

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• Can someone explain the physical architecture of RAID 10 in complete layman's terms?

  - by Hank

  I am a newbie in the world of storage and I am having a hard time digesting the physical architecture of some of the RAID levels. I am particularly interested in RAID 10, and 50. I asked the question specifically about RAID 10, because I feel if I understand that, I'll understand the other. So, I get the definition of RAID 10 - "minimum 4 disks, a striped array whose segments are mirrored". If I've got 4 disks and Disks 1 and 2 are a mirrored pair, and Disks 3 and 4 are a mirrored pair - where does the data get striped? Thanks.

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• How can I improve performance over SMB/CIFS for an application that has poor write speeds?

  - by Jeremy

  I have a third party application that reads several large files and generates a third large file. Its performance is quite good when the generated file is stored on "local storage", i.e. either a direct attached or iSCSI-based disk. The source files that are read can be stored remotely on our NAS and accessed via SMB with little effect on performance. However, if we attempt to write the target file to any kind of SMB/CIFS share (Samba or Windows Server) the performance drops almost ten-fold. This is unacceptably slow in our case. Writing files to network shares is not otherwise slow. I can copy large files to SMB shares and get great performance - near what I would expect is possible given the disks and network in question. I have a theory that this application's problem with SMB shares has something to do with a lack of write caching over the share and perhaps lots of network roundtrips. Is this possible and is there anything that can be done about it?

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• Win 7 Explorer backup and long paths

  - by user53299

  I use Explorer to do backups because Win 7's backup program asks me to take backups previously done and to put them back in the drive. I am opposed to that idea since I believe backups should remain in storage. With Explorer backups (burn and burn to disc) I have encountered the "destination path too long" error message and it shows the name of a folder "Debug" three times. I have hundreds of folders named "Debug" thanks to Visual Studio. At this moment I'm too angry at Microsoft to write a program to determine my 3 longest paths. (Aside: This is all after coincidentally reading two articles about path junctions earlier this evening which already made me kind of unhappy.) Please, is there an easy way to continue to make backups with Explorer? Edit: I should add that renaming paths wrecks Visual Studio projects so I really need to isolate the small number of problem paths or find a cleaner solution.

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• use network drives as mount points during installation?

  - by ajsie

  is it possible to use network storage locations as mount points during installation? cause i want to separate system (ubuntu) with data (personal files). eg. if i have 5 computers i don't want to recreate /home/david 5 times. so i want to mount networkdrive/home to /home in local ubuntu server. so ALL users home folders could be used and maybe also networkdrive/projects to /projects. in that way its ok if i by accident repartitioned the local ubuntu server cause all data is not there on that server, but in the data server. is separating "data" from "logic" good in this case? and is it possible? what protocol should i use for the mapping over internet? (maybe the server is in Sweden, and the data is in Norway). thanks.

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• What is the specific advantage of a blade server for virtualisation?

  - by ChrisZZ

  We are planning to implement a VDI Solution. We had some discussions about Blade vs Rack. As we are only planning to implement 75-100 Clients, we calculated, that we would need 2 Servers with Dual 8C Processors - and a shared storage server. This calculation is based on a paper by ORACLE, that says, 12 active virtual machines per core. Now, for buying to servers, a blade does not scale financially. But the Blade has some other advantages: a) The interconnectivity between the blades is super-fast. b) IO Virtualisation Are there other advantages, that we should consider, that would make up for price - and are this advantages so important, that we should think about investing in the blade?

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• HDD situation - what would be best - data and backup

  - by Sam Johnson

  I just installed W8 on an Intel 330 180 GB SSD. I have 3 1TB HDDs. 1 HDD will be external for backup. 2 HDDs are then available for my PC. I do not need 2 TB of storage, so I thought I'd set these up to be exact clones of one another, so that if one dies I have a backup in the computer to go along with my external. Is this a good set up? How best would this be accomplished? I've heard people suggest RAID but I've never done RAID, have no idea what it is, and have no idea how to set it up in my BIOS. Thanks in advance

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• my sweet old VHS collection

  - by microspino

  Which is the best procedure and digital format to resurrect my old VHS library i a way I can see It on my LCD TV? I have a not so big collection 100 VHS I have plenty of storage I have a network media tank (A110 popcorn Hour but I can also purchase a new media center if needed) I have an old working VCR (but again I can pick a specific one new if you think It's better to save quality) The VHS cassette collection seems to have retained a good quality over the years. Of course I have some computer (either mac and pc) to do the process. Which software do I need/miss? Please give me some advice.

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• Recommending simple appliance for DansGuardian, iptables, snort inline

  - by SRobertJames

  I'm currently using a Linksys E2000 with dd-wrt. I'd like to add DansGuardian for Content Filtering and snort-inline for IPS; but those require a more powerful box (mainly, more storage). Can you recommend a good device to use? I'm open to both overwrite-the-firmware (like dd-wrt) and designed-to-be-customized boxes. Requirements: 1. 5+ Ethernet ports, pref. GigE 2. small form factor 3. No noise (office environment) 4. low power 5. Not sure about 802.11 wireless Budget < $400, pref. less.

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• Personal wiki on usb / the cloud?

  - by drby

  I'm looking for a personal wiki that can be installed on an usb stick and (more importantly) somewhere on the cloud (dropbox). I've looked at the Wiki Matrix, but I really don't care that much about any of the options, so I end up with a choice between ~50 wikis at the end. Tried out TiddlyWiki but there are some things that really annoy me like the fact that all pages get opened on the same page. It really looks like it'd turn into a giant mess pretty quickly. I'd like to have something that's pretty close in terms of appearance and usability to wikipedia. Hierarchical categories for organization would be really nice. And accessible storage (in case I ever want to convert it to something else).

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• What are the cheap CDN for Origin Pull?

  - by DucDigital

  I've read several thread around ServerFault about this, but still I am not satisfy with the answer so I post a question here. I need a Origin Pull CDN that support big file (more than 200MB). I don't need a storage place since they are too small, just to relay the server. Also the price should be afforable, ofcourse not more than 150$ a month for their smallest plan. I also need to pay by credit card since I do not work or stays in the US so it's hard for me to do a bank wire. Thank you very much

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• Ways to increase my Ubuntu partition space

  - by Andreas Grech

  I am currently running Ubuntu and Windows 7 as dual-boot on a single HD. The problem is that when I installed Ubuntu, I didn't allocate as much space as I thought I would need and now I need 'reinstall' Ubuntu so that I can increase the amount of storage space. Now there are two ways to go about this. Either I use use gparted to increase my partition space (but I read that it's not really that safe as regards data loss) or create the new partition with more space and reinstall Ubuntu there. But if want to reinstall Ubuntu, is there a way I can somehow "save" my current Ubuntu and install that one? What I mean is that I don't want to lose my current installed packages and files that I have on this partition. Is there a way to kind of maybe 'streamline' my current Ubuntu so that I install this one on the new partition? If not, what are your opinions as regards gparted?

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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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• Serverlocation moved and how can I Move the files

  - by Bernhard

  Hello together, I´ve a big problem. I have to move data from an old Webspace which is only accessibla by ftp. No we have a new root server which is accessible by ssh of course :-) No i Need to move all data from the old space but there is a lot of Gb of files. Is there a way to fetch all files directly from the old ftp to the storage and not over a third station (my local machine)? I´ve tried it with ftp but without success. I think I´ve used the wrong commands. Is there a way to etablish something like this including all files and directorys? Thank you in advance Bernhard

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