Cheap storage for school labs

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• Storage for Lab Manager

  My client needs storage for Lab Manager running on 100 servers. Is it recommended to use the NAS or SAN for Lab Manager running and what type of e/s that you wait for the same thing?

  I did a little bit with storage of LM in recent years.

  I have a development/test environment on LM 600 machine, using 2 Sun 7210 storage devices (is no longer available) on NFS shares. We have 2 links 1 G servile vmKernel traffc as well as links to more vmnetwork, management, etc.  The devices are related to links of 4 x 1 G each.

  I don't know what are the current constraints of LM/ESX, but whenever we revisit the decision 'block vs NAS' we end up selecting NFS (our Sun boxes can present the iSCSI as easily).

  As Jon says, what storage you need certainly depend on your VMS and load.  NOTE: my experience is * NOT * in a production environment, where I am squeezing virtual machines performance.  It's more about the functionality and "adequate" performance (where "adequate" is a measure based on the user experience topic).

  Some things we have learned over the years:

  • IOPS / s are kings, and most of them are entries.  (Written at the moment, I have a few heavy ready operations push me down to about 65 percent.)  I saw > 80% of entries maintained for days.)
  • Latency does not seem as important - VMs run about the same at 10ms latency and latency 250ms NFS NFS.  When latencies above 750ms grows, they will be noticiable users and if they go more than a second over 1000 ms you will begin to see the impact on the guest OSes, especially Solaris x 86.
  • Normal operations don't care about bandwidth - just current execution machines don't even fill a link 1 G
  • Deployment operations * could * start filling to the top of the bandwidth, maybe
  • Betware storm IO.  Often people think the storm IO deployment/boot, but 400 RedHat machines all the kickoff of their 'updatedb' cron job at 04:00 can produce any IO storm as well.  NOTE: IMHO if you buy storage to handle this kind of thing, you're overpaying storage.  I've spread my cron through the night and now can not see on the graphs of storage performance.
  • There is * NOT * a good correlation between guest OS IOPS / s as shown, for example, iostat and PAHO are / s NFS presented to the storage system.  I'm guessing that ESX made a lot of caching.

  Most storage vendors I spoke last year does not seem to find it.  They think in terms of bandwdith and it accelerates with read cache, so unimportant in my environment - I had to push really hard to get sellers to think in the right conditions and some of them really seem out of their depth there.

  I think that this state of mind is important: consider the IOPS / s as you consider CPU: how much should I give to each machine?  How much should I oversubsubscribe?

  Like CPU, a physical machine which IO a lot more available that he needs and you can consolidate - but don't know how.  A physical machine with a pair of 15 k drives RAID1 has about 200 IOPS / s available and readers spend most of time inactive (a bit like the CPU).

  That will boost the machines and when?  Right now I'm on average 9 inputs/outputs by VM, which in my opinion is quite small.  My storage system can go higher under request, but I have enough machines that it is fairly constant.

  In my quest for the perfect storage of LM, I found the usual: good, not expensive or fast, you can choose any two.  How we use LM (lots and lots of shared models) we would really like a unique namespace shared (i.e. 1 data store). I have yet to find the 'perfect' - storage, the Suns are very profitable for the performance and space, but their management takes too much of my time and my 72XX are not expandable - the 74 might be a different experience.  I am currently looking to add some SSD storage, but the ideal configuration would be automated migratino between levels (for example, EMC QUICKLY) and if I bought only from EMC I would triple my cost per VM.

  I talked to people who have a pattern of use of different models that are quite happy on several data stores.  If you can move your load through many warehouses of data then Isilon looks like interesting storage.

  So, in summary:

  • Watch IOPS / s 1st, 2nd and 3rd, then the latency time, then (maybe) bandwidth
  • Manage the budget or the ability of the IOPS / s as you CPU
  • You may not use comments IOPS / s to provide shared storage IOPS / s

  I'm hoping to have a better storage solution in the next 6 months or more.

  --

  Dewey

• How to set an MTU of 1600 for test Lab at home for the NSX on Vmware workstation

  Hello.

  I'll set up a laboratory at home to build a laboratory to the NSX. I am running 3 on VMware Workstation 11 Esxi hosts. All three hosts of esxi run each 4 Ethernet adapters on them.

  To configure installation VXlan for my lab at home, I have modified the virtual machine's .vmx file and changed the vmxnet3 device and it works.

  Ethernet1. ConnectionType = "custom".

  Ethernet1.virtualDev = "e1000".

  Ethernet1.wakeOnPcktRcv = "FALSE".

  Ethernet1. AddressType = 'generated '.

  ethernet2. Present = 'TRUE '.

  ethernet2.VNET = "VMnet1.

  ethernet2. ConnectionType = "custom".

  ethernet2.virtualDev = "vmxnet3" - change to vmxnet3

  Adapter type VMxnet3 only is not supported for VMware workstation and also one of my hosts broke down several times with the low error message in the log file.

  2015-08 - 02T 13: 37:48.254 + 10:00 | vCPU-4 | I120: Ethernet3 MAC address: 00: 0C: d 29:a4:7: 8 c

  2015-08 - 02T 13: 37:48.261 + 10:00 | vCPU-4 | I120: VMXNET3 user: Ethernet3 pilot Info: version = 16908544 gosBits = 2 gosType = 1, gosVer = 0, gosMisc = 0

  2015-08 - 02T 13: 37:48.527 + 10:00 | vCPU-5 | I120: VMXNET3 hosted: Packet has no eop, 1 scanner, tx ring size 512, txd valid 0.

  2015-08 - 02T 13: 37:48.527 + 10:00 | vCPU-4 | I120: Ethernet3 MAC address: 00: 0C: d 29:a4:7: 8 c

  2015-08 - 02T 13: 37:48.536 + 10:00 | vCPU-4 | I120: VMXNET3 user: Ethernet3 pilot Info: version = 16908544 gosBits = 2 gosType = 1, gosVer = 0, gosMisc = 0

  2015-08 - 02T 13: 37:51.436 + 10:00 | VMX | I120: E1000: E1000 full rx ring, empty packages.

  2015-08 - 02T 13: 37:53.636 + 10:00 | MKS | I120: MKS - SWB: number of MKSWindows has changed: 1 make MKSWindow (s) total 2.

  2015-08 - 02T 13: 37:55.565 + 10:00 | VMX | I120: VMXVmdbCbVmVmxExecState: change of State Exec asked State poweredOff without reset, soft, softOptionTimeout: 20000000.

  2015-08 - 02T 13: 37:55.565 + 10:00 | VMX | I120: Stopping VCPU son...

  2015-08 - 02T 13: 37:56.567 + 10:00 | SVGA | I120: Fate of thread SVGA

  2015-08 - 02T 13: 37:56.571 + 10:00 | MKS | I120: MKS - SWB: number of MKSWindows changed: 0 record (s) MKSWindow of total 1.

  2015-08 - 02T 13: 37:56.575 + 10:00 | MKS | I120: GDI-Backend: HWinMux stopped making the composition of the window.

  2015-08 - 02T 13: 37:56.575 + 10:00 | MKS | I120: MKS - SWB: number of MKSWindows changed: 0 record (s) MKSWindow of total 0.

  2015-08 - 02T 13: 37:56.575 + 10:00 | VMX | I120: Thread MKS is stopped

  Can someone guide me how to set up a lab NSX on VMware workstation and use 1600 MTU for VXlan traffic. Any help is very appreciated.

  Hi all

  I managed to solve this problem by separating the storage traffic to a different vswitch and the traffic to a different VDS NSX.

  ~ # esxcfg - NICS - l

  Name PCI Driver link speed Duplex MAC address MTU Description

  vmnic0 e1000 up to 1000Mbps Full 00 0000:02:01.00: 0C: d 29:a4:7: Intel Corporation 1500 6th 82545EM controller Gigabit Ethernet (copper)

  vmnic1 e1000 up to 1000Mbps Full 00 0000:02:04.00: 0C: 29:a4:7 d: 78 1500 Corporation Intel 82545EM Gigabit Ethernet Controller (copper)

  vmnic2 e1000 up to 1000Mbps Full 00 0000:02:05.00: 0C: 29:a4:7 d: 82 1600 Corporation Intel 82545EM Gigabit Ethernet Controller (copper)

  vmnic3 0000: 0b: 00.00 vmxnet3 Up Full 00 10000Mbps: 0C: 29:a4:7 d: 8 c 1600 vmxnet3 Inc. VMware Virtual Ethernet Controller.

  ~ # esxcfg - vswitch - l

  Switch name Num used Ports configured Ports MTU rising ports

  1536 5 128 1500 vmnic0 vSwitch0

  Name PortGroup VLAN ID used rising Ports

  The VM network 0 0 vmnic0

  0 1 vmnic0 VMkernel

  0 1 vmnic0 network management

  DVS name Num used Ports Ports Ports configured MTU rising

  dvSwitch 1536 10 512 1600 vmnic3 - for network traffic

  DVPort use customer ID

  7 1 vmnic3

  81 1 NSX 2 controller nsx_controller_4be65643-37ca-468e-b00a-f711d6cc5447.eth0---noeud

  79 1 nsx_controller_8bb60e33-b290-4252-92b1-501aa2f83607.eth0---noeud NSX Controller 3

  110 1 vmk2 - vtep interface for the host

  119 1 Linux1.eth0 - test Linux VM

  This laboratory works fine for me now and my Adviser for laboratory at home will be not to use the same network card for storage traffic that was used for the traffic of the NSX.

  Thank you for all your help.

• Download Windows on a MacBook for school

  I need to download Windows on my mac, but I would much rather OS X can I download Windows and still use OS X when I have no need for school?

  I assume you want to install Windows on your Mac? You must have a valid licensed copy of Windows Installer. There are two ways to install it on yourMac. You can use Boot Camp, which comes with OS X, or you can install a separate application that creates a virtual space.

• Flash does not work in FF26, it works in Chrome and IE. I reinstalled FF and Flash several times. I can't adjust the setting of local storage for Flash either.

  Flash does not work on some web sites. I never had a problem before with flash on FF in the nearly 15 years that I've used FF. Recently it has stopped working for some reason any and on some flash sites does not, NHL.com and site of kid Herotopia being just two of them. I updated FF, Adobe flash, the reinstalled version them repeatedly deleted all the files that have been stored on my laptop; that is, profiles, saved favorite nothing that I could find in user accounts and in the local app, low local and roaming data folders. What is strange, is that I can't set the local storage for flash either. When I visit the Adobe site to view the Adobe Flash Player Settings Manager I can move the scroll bar, but cannot check the: allow third-party flash content to store data on your computer. I can't do it on a Web site where the flash does not work. When I try and it changed on any site that it goes back to zero. Not sure if it is a part of the problem. I got tired of many suggestions on the pages of material here, but nothing works. I even tried this http://forums.adobe.com/message/4566499#4566499#4566499

  The other strange thing is that I used to get the "warning: script does not" prompt that displays "a script on this page may be busy, or it may have stopped responding." You can stop the script now, or you can continue to see if the script ends. "sometimes when I would buy on Macy's.com. This is the only site that it happened.
  I know I have only little technical knowledge, but I have tried to figure this out for a few days and do not know what is happening. The only thing I can think is that I somewhere files corrupted causing this problem. I have just updated to Windows 8.1 tonight in the hope that can help, but nothing helped. I would be very disappointing if I couldn't use FF or must go back using Chrome and FF.
  Sorry for the posting long but no solution would be much appreciated.

  Hi jscher2000,.

  Yes, I followed essentially the: Manual steps: https://support.mozilla.org/en-US/questions/968190?page=5#answer-509209 you have posted.

  And after restarting Firefox, Flash worked. Thanks again for your post I could not find this solution on the Adobe forums until you have posted the link.
  Your expertise and your time is much appreciated.

• I want to delete data from my i cloud storage for the little free space without increasing the storage capacity. How to do?

  I want to delete data from my i cloud storage for the little free space without increasing the storage capacity. How to do?

  Storage of parameters/iCloud/Storage/manage or delete some of the data being synchronized with iCloud, such as photos.

• I use Webcourses for school and it does not support Firefox 4 or higher, how can I go back to Firefox 3.6 (windows 7)?

  I do online courses and web portal for school (UCF) does not support any higher than Firefox 3.6 version of firefox.

  I'm getting thrown out of the gate at various times, and it's really making things difficult.

  How to return to firefox 3.6 Firefox 4.01 in windows 7?

  Install Firefox Portable 3.6.20 on your hard disk so that the website.
  
  http://PortableApps.com/apps/Internet/firefox_portable/localization#legacy36

  This will not affect your current Firefox installation, that you need to update to Firefox 6.0 - being two versions behind more later you are missing a lot of important security fixes. 3.6.20 doe have all these fixes.

• What is the limit of storage for "indexDB" in Firefox 4?

  What is the limit of storage for "indexDB" in Firefox 4?

  I need to know because I write a significant demand with local storage requirements.

  More the 5 MB limit in the Local Storage API.

  Your response is appreciated.

  Thank you
  David

  If the user grants permission for a site to exceed the quota of 50 MB IndexedDB, then as much as I know Firefox is no limit more. The only limits on the size of the IndexedDB database will be the disk space of the user and operating system.

  The quota of localStorage is 5000KB and there is no way for a web site asking the browser for permission to store more than that amount in localStorage.

• Permanent and continuous storage for family photos large and video solution

  I have been using external hard drives to save years of athletics competitions for my children, for posterity and my team amateur video (iMovie project) at the end of the season.  However, I need a failsafe, courses and the permanent storage for my thousands of photos and 300 GB of digital video clips (and more).  If I continue to use external drives, I still have readers risk bad over time.  What are my options, please?

  Keep several copies on separate drives offsite. There is no solution "fail safe." You can mitigate or reduce the impact knowing that drives die, buildings burn, data gets corrupted/stolen or lost. Knowing that on the records of time bad go migrate your data to new disks on a rotation schedule.

• If anyone can help, I just bought a 2011 mac book pro and I use it for school and I work in education and currently I have lightroom, photoshop and adobe DC, are all the other apps I put on it?

  If anyone can help, I just bought a 2011 mac book pro and I use it for school and I work in education and currently I have lightroom, photoshop and adobe DC, are all the other apps I put on it?

  Chaka - welcome!

  What you want to do on your "new" MBP?

• Film digital storage for Apple TV?

  Film digital storage for Apple TV? I think of buying a collection of films, but do not have much space on my iCloud. Movies can stay in the Apple TV?  Digital films take a lot of space, Don't they?

  The ATV is a multimedia player that allows rather than a storage device. You can store media (movies, tvshows, music, etc.) on your computer to iTunes and House share locally or you can broadcast over the web. But you cannot store anything on the ATV itself - conservation applies to the apps/games only...

• X 250 additional storage drive? Hello! Is it possible to have an another disk storage for X 250?

  X 250 additional storage drive?

  Hello! Is it possible to have an another disk storage for X 250?

  Hello

  "I just got a X 250 myself and am currently play with using an SSD of m2 (2242 size, it's a little smaller than an mSATA SSD) and a"regular 7 mm of height"2.5" SSD in as well.

  Kind regards

  Aryeh Goretsky

• Bank of America app for my lab top

  How can I download the Bank of America app for my labtop? I went to the app store for google and it does give me an app I can download the phone the app for my lab top?

  You will need to contact BOA for this.  We don't know if they make another one.

• Cani use my memorex 52 x cd - rw external drive as a storage for my backup files

  Cani use my memorex 52 x cd - rw external drive as a storage for my backup files

  Hello chrismullinax,

  Below, I have included a link to perform backups.  Assuming that your device is compatible, you should have the ability to perform at this place.  You need to confirm how much you have as to how many CDs of data will be needed.

  Backup:

  http://Windows.Microsoft.com/en-us/Windows7/back-up-your-files

  Thank you

• The opportunity to identify a specific storage for each user or security group.

  Hi all
  

  I asked how to specify storage for each user or security group on the server of the University Complutense of Madrid. ex. I want user 'weblogic' unable to download a document on the server of the University Complutense of Madrid, more than a gigabyte. the user can check in several files, but thetotal space for all files are not a gigabyte.

  Thank you
  

  I asked how to specify storage for each user or security group on the server of the University Complutense of Madrid. ex. I want user 'weblogic' unable to download a document on the server of the University Complutense of Madrid, more than a gigabyte. the user can check in several files and the total space for all files not exceeding a gigabyte.

  You can write a rule to achieve this where in the xStorageRule is evaluated based on any set of metadata such as dDocAuthor or dDocSecurityGroup etc., or a combination of metadata.