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  • What is the standard system architecture for MongoDB

    - by learner
    I know this question is too vague, so I would like to add some key numbers to give insights about what the scenario is Each Document size - 360KB Total Documents - 1.5 million Document created/day - 2k read intensive - YES Availability requirement - HIGH With these requirements in mind, here is what I believe should be the architecture, but not too sure, please share your experiences and point me to right directions 2 Linux Box(Ubuntu 11 would do)(on a different rack setup for availability) 64-bit Mongo Database 1-master(for read/wr1te) and 1-slave(read-only with replication ON) Sharding not needed at this point in time Thank you in advance

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  • I/O intensive MySql server on Amazon AWS

    - by rhossi
    We recently moved from a traditional Data Center to cloud computing on AWS. We are developing a product in partnership with another company, and we need to create a database server for the product we'll release. I have been using Amazon Web Services for the past 3 years, but this is the first time I received a spec with this very specific hardware configuration. I know there are trade-offs and that real hardware will always be faster than virtual machines, and knowing that fact forehand, what would you recommend? 1) Amazon EC2? 2) Amazon RDS? 3) Something else? 4) Forget it baby, stick to the real hardware Here is the hardware requirements This server will be focused on I/O and MySQL for the statistics, memory size and disk space for the images hosting. Server 1 I/O The very main part on this server will be I/O processing, FusionIO cards have proven themselves extremely efficient, this is currently the best you can have in this domain. o Fusion ioDrive2 MLC 365GB (http://www.fusionio.com/load/-media-/1m66wu/docsLibrary/FIO_ioDrive2_Datasheet.pdf) CPU MySQL will use less CPU cores than Apache but it will use them very hard, the E7 family has 30M Cache L3 wichi provide boost performance : o 1x Intel E7-2870 will be ok. Storage SAS will be good enough in terms of performance, especially considering the space required. o RAID 10 of 4 x SAS 10k or 15k for a total available space of 512 GB. Memory o 64 GB minimum is required on this server considering the size of the statistics database. Warning: the statistics database will grow quickly, if possible consider starting with 128 GB directly, it will help. This server will be focused on I/O and MySQL for the statistics, memory size and disk space for the images hosting. Server 2 I/O The very main part on this server will be I/O processing, FusionIO cards have proven themselves extremely efficient, this is currently the best you can have in this domain. o Fusion ioDrive2 MLC 365GB (http://www.fusionio.com/load/-media-/1m66wu/docsLibrary/FIO_ioDrive2_Datasheet.pdf) CPU MySQL will use less CPU cores than Apache but it will use them very hard, the E7 family has 30M Cache L3 wichi provide boost performance : o 1x Intel E7-2870 will be ok. Storage SAS will be good enough in terms of performance, especially considering the space required. o RAID 10 of 4 x SAS 10k or 15k for a total available space of 512 GB. Memory o 64 GB minimum is required on this server considering the size of the statistics database. Warning: the statistics database will grow quickly, if possible consider starting with 128 GB directly, it will help. Thanks in advance. Best,

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  • Turn off email notification from abrt (Automatic Bug Reporting Tool)

    - by Banjer
    I'm configuring CentOS 6.2 and have seen a few "[abrt] full crash report" emails. I understand that abrt is useful for creating crash dumps and what not, so I don't want to disable the service, I just would like to stop getting the crash report emails. I probably have to add something to the config file in /etc/abrt/abrt.conf. I can't seem to find anything in my searches. Any idea? Thanks. Edit: Here is my abrt.conf, which is rather simple. [root@myhost~]# cat /etc/abrt/abrt.conf # Enable this if you want abrtd to auto-unpack crashdump tarballs which appear # in this directory (for example, uploaded via ftp, scp etc). # Note: you must ensure that whatever directory you specify here exists # and is writable for abrtd. abrtd will not create it automatically. # #WatchCrashdumpArchiveDir = /var/spool/abrt-upload # Max size for crash storage [MiB] or 0 for unlimited # MaxCrashReportsSize = 1000 # Specify where you want to store coredumps and all files which are needed for # reporting. (default:/var/spool/abrt) # #DumpLocation = /var/spool/abrt And a listing of /etc/abrt: [root@myhost~]# ls -la /etc/abrt total 32 drwxr-xr-x. 3 root root 4096 Apr 13 06:14 . drwxr-xr-x. 97 root root 12288 Apr 13 03:50 .. -rw-r--r--. 1 root root 527 Dec 13 22:50 abrt-action-save-package-data.conf -rw-r--r--. 1 root root 572 Dec 13 22:50 abrt.conf -rw-r--r--. 1 root root 175 Dec 13 22:50 gpg_keys drwxr-xr-x. 2 root root 4096 Apr 13 06:13 plugins [root@myhost~]# ls -la /etc/abrt/plugins/ total 12 drwxr-xr-x. 2 root root 4096 Apr 13 06:13 . drwxr-xr-x. 3 root root 4096 Apr 13 06:14 .. -rw-r--r--. 1 root root 278 Dec 13 22:50 CCpp.conf Actually all of those conf files above are only a few lines and do not mention anything about mail, email, or notifications.

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  • Video Resources to learn Ubuntu

    - by Samy
    I'm starting to learn how to run a server and decided to learn Ubuntu as I was told it's the most newbie friendly. Can the more experienced folks here suggest some good video resources to learn Ubuntu that helped you when you were starting out? I'm a total newbie to server management and only have software experience. Thanks

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  • MySQL Extremely High Disk Activity (Read Operations)

    - by Jake Schoermer
    I have 1GB Linode VPS with a standard LAMP stack. Apache is tuned fine but for some reason MySQL's disk usage is high. This is causing really slow site load times. RAM and CPU usage are fine. Can anyone give me any pointers on tuning mysql's disk performance? I'm using InnoDB. iotop output is below. Total DISK READ: 38.50 M/s | Total DISK WRITE: 27.20 K/s TID PRIO USER DISK READ> DISK WRITE SWAPIN IO COMMAND 9808 be/4 mysql 22.40 M/s 0.00 B/s 0.00 % 63.75 % mysqld 10045 be/4 mysql 2.06 M/s 0.00 B/s 0.00 % 26.65 % mysqld 9987 be/4 mysql 1694.38 K/s 0.00 B/s 0.00 % 18.33 % mysqld 10015 be/4 mysql 1554.47 K/s 0.00 B/s 0.00 % 12.71 % mysqld 10019 be/4 mysql 1461.21 K/s 0.00 B/s 0.00 % 5.58 % mysqld 9839 be/4 mysql 1383.48 K/s 0.00 B/s 0.00 % 25.69 % mysqld 10031 be/4 mysql 1243.58 K/s 0.00 B/s 0.00 % 5.68 % mysqld 10023 be/4 mysql 1057.04 K/s 0.00 B/s 0.00 % 2.02 % mysqld 10020 be/4 mysql 1025.95 K/s 0.00 B/s 0.00 % 7.05 % mysqld 10001 be/4 mysql 808.33 K/s 683.97 K/s 0.00 % 1.16 % mysqld 10025 be/4 mysql 746.15 K/s 0.00 B/s 0.00 % 3.28 % mysqld 10043 be/4 mysql 715.06 K/s 0.00 B/s 0.00 % 0.48 % mysqld 10044 be/4 mysql 672.31 K/s 0.00 B/s 0.00 % 5.25 % mysqld 10034 be/4 mysql 668.42 K/s 1989.73 K/s 0.00 % 5.31 % mysqld 9985 be/4 mysql 450.80 K/s 124.36 K/s 0.00 % 8.83 % mysqld 9989 be/4 mysql 357.53 K/s 0.00 B/s 0.00 % 5.21 % mysqld 10033 be/4 mysql 186.54 K/s 0.00 B/s 0.00 % 1.59 % mysqld 10021 be/4 mysql 155.45 K/s 435.25 K/s 0.00 % 1.23 % mysqld 10007 be/4 mysql 124.36 K/s 0.00 B/s 0.00 % 0.53 % mysqld 9763 be/4 www-data 38.86 K/s 0.00 B/s 0.00 % 4.56 % apache2 -k start 10027 be/4 mysql 31.09 K/s 0.00 B/s 0.00 % 4.24 % mysqld 1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % init 2 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kthreadd] 3 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/0] 4 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/0:0] 5 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/u:0] 6 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/0] 7 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/1]

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  • Is RAID 5 or SnapRAID the better alternative for a media server raid system?

    - by rubo77
    I am using a raid 5 system for my ubuntu 12.04 xmbc media server with 5 disks. Since the data isn't changing a lot and a total loss wouldn't be so bad, cause I have another backup anyway I am thinking about using SnapRAID It sais: SnapRAID is mainly targeted for a home media center, where you have a lot of big files that rarely change The main advantage for me would be power-saving, cause not all disks have to run all the time. Would you recomment using this? (with a regular resync script once a day)

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  • Power and Cooling Cost compared with Server/Hardware Cost

    - by psaccounts
    Has anyone done, or is aware of any, calculations to compare the cost of power and cooling compared to the cost of hardware (servers) in a typical data center? This is to compute a true total cost of ownership of self-hosting servers. Of course real TCO includes: hardware_cost + power + cooling + rental + human_cost + maintenance Is there any study that says something like (TCO - hardware_cost) = 40% of hardware_cost in 3 years? Any pointers will be appreciated.

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  • How many domains can you configure on a Sun M5000 system?

    - by Andre Miller
    We have a few Sun M5000 servers with the following configuration: Each system has 2 system boards each containing 2 x 2.5Ghz quad core processors Each system board has 16GB of RAM Each system has 4 x 300GB disks I would like to know how many hardware domains can I configure per system? Do I need one system board per domain (implying a total of 2 domains), or can I create 4 domains, each with one cpu each?

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  • Does it make sense to install an SSD into a 3rd generation MacBook?

    - by Ivan Krechetov
    I've heard that, to really benefit from a solid-state drive, one needs a motherboard fast enough. Do you think it's worth to install an SSD into this laptop? Model Name: MacBook Model Identifier: MacBook3,1 Processor Name: Intel Core 2 Duo Processor Speed: 2.2 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 4 MB Memory: 4 GB Bus Speed: 800 MHz Boot ROM Version: MB31.008E.B02

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  • Microsoft Remote Desktop Bandwidth Usage

    - by Salman A
    I am wondering how much bandwidth in terms of bytes sent/received is consumed by a typical remote desktop session. I need to know this because our ISP enforces a cap on monthly bandwidth usage (i.e. the total amount data in GB that can sent or received in a month). So just wondering like how much KBs or MBs are transferred per hour in an average RDP session.

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  • Exchange 2007 Standard Edition

    - by Phrontiste
    We Have : Exchange 2007 Standard Edition IBM System X3650 2 x Intel Xeon 5430 2.66 GHz Version 8.1 Build 240.6 Mailbox, Hub Transport, Client Access Role Installed on One Box Total Number of Mailboxes : 110 - 130 6 Physical Disks Disk 0,1 (68 GB) = Raid-1, OS Partition ( C: Partition) Disk 2,3 (279GB) = Raid-1, Exchange Database (First and Second Storage Groups) ( D: Partition ) Disk 4,5 (68 GB) = Raid-1, Exchange Transaction Logs ( E: Partition ) Setup: Storage Groups : D:\First Storage group\Mailbox database.edb Storage Groups : D:\Second Storage Group\Public Folder Database.edb Transaction Logs : E Partition Problem 1: On our D Partition (Mailbox Database Partition), total size is 279 GB, free space remaining is 64.7 GB, when I select the first storage group and second storage group folders and right click properties they report a size of 165 GB. Mailbox database reports a size of 157GB when right clicked Properties. where as the size displayed in the folder is 164,893,456 KB So, we are missing around 50-54 GB, there is nothing else on these drives, no page file, nothing at all. The partition housing the Transaction logs is reporting the sizes accurately. Any suggestions / fixes on the above ? Problem 2: As you may have already read in Problem 1, the size of the mailbox database is 157GB or 164GB reported; which is not recommended, a) What would you suggest we should do to divide mailboxes in storage groups on this same server ? b) How would we move mailboxes into different storage groups ? c) This is the information store size ? (Am I right in thinking that this is not recommended) d) Having multiple storage groups with one Mailbox DB in each, would that reduce the size of the Information Store? e) Any suggestions / how-to reduce the size of information store ? We didn't install this, we have inherited this - what other recommendations you can make in order to keep ourselves better prepared for any server disaster? We are backing up with Yosemite Backup on RD1000 (320GB) at the moment, which is backing up successfully, flushing the logs daily. We haven't done a test restore YET. I have tried to provide as much info as possible, please let me know if you need further info. Also, we haven't yet faced any problems in mailflow, access speeds, everything is working fine, we have two to five people accessing OWA or Outlook via vpn only. Thanks for your time to read the above - will look forward to your expert suggestions.

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  • PHP-FPM Pool, Child Processes and Memory Consumption

    - by Jhilke Dai
    In my PHP-FPM configuration I have 3 Pools, the eg: Config is: ;;;;;;;;;;;;;;;;;;;;;;; ; Pool 1 ; ;;;;;;;;;;;;;;;;;;;;;;; [www1] user = www group = www listen = /tmp/php-fpm1.sock; listen.backlog = -1 listen.owner = www listen.group = www listen.mode = 0666 pm = dynamic pm.max_children = 40 pm.start_servers = 6 pm.min_spare_servers = 6 pm.max_spare_servers = 12 pm.max_requests = 250 slowlog = /var/log/php/$pool.log.slow request_slowlog_timeout = 5s request_terminate_timeout = 120s rlimit_files = 131072 ;;;;;;;;;;;;;;;;;;;;;;; ; Pool 2 ; ;;;;;;;;;;;;;;;;;;;;;;; [www2] user = www group = www listen = /tmp/php-fpm2.sock; listen.backlog = -1 listen.owner = www listen.group = www listen.mode = 0666 pm = dynamic pm.max_children = 40 pm.start_servers = 6 pm.min_spare_servers = 6 pm.max_spare_servers = 12 pm.max_requests = 250 slowlog = /var/log/php/$pool.log.slow request_slowlog_timeout = 5s request_terminate_timeout = 120s rlimit_files = 131072 ;;;;;;;;;;;;;;;;;;;;;;; ; Pool 3 ; ;;;;;;;;;;;;;;;;;;;;;;; [www3] user = www group = www listen = /tmp/php-fpm3.sock; listen.backlog = -1 listen.owner = www listen.group = www listen.mode = 0666 pm = dynamic pm.max_children = 40 pm.start_servers = 6 pm.min_spare_servers = 6 pm.max_spare_servers = 12 pm.max_requests = 250 slowlog = /var/log/php/$pool.log.slow request_slowlog_timeout = 5s request_terminate_timeout = 120s rlimit_files = 131072 I calculated the pm.max_children processes according to some example calculations on the web like 40 x 40 Mb = 1600 Mb. I have separated 4 GB of RAM for PHP, now according to the calculations 40 Child Processes via one socket, and I have total of 3 sockets in my Nginx and FPM configuration. My doubt is about the amount of memory consumption by those child processes. I tried to create high load in the server via httperf hog and siege but I could not calculate the accurate memory usage by all the PHP processes (other processes like MySQL and Nginx were also running). And all the sockets were in use, So, I seek guidance from anyone who have done this before or know how exactly the pm.max_children in PHP Works. Since I have 3 Pools/sockets with 40 child processes does that count to 3 x 40 x 40 Mb of Memory usage ? or it is just like 40 Max. Child processes sharing 3 sockets (and the total memory usage is just 40 x 40 Mb) ?

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  • smallest webserver

    - by Crudler
    Hi Can anyone recommend a tiny tiny webserver that will run on windows. Extra points if it runs as an NT service. I am looking for something purely to server html. At most it will probably server 20 pages a day, and at worst 2 or 3 simultaneously. So really really simple stuff. We are currently using IIS which is total overkill

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  • multiple "ÏF" formula

    - by Karen
    I am trying to write an IF formula for an order form where a discount is applied depending on the amount of units ordered..... The discounts are: 0 to 24 units - 0 discount 24 to 59 units – 5% discount 60 to 95 units – 10% discount 96 to 131 units – 15% discount 132 to 263 units – 20% discount 264+ units - 30% discount the cell that i am taking the total from is J1028. I have no idea how to do IF formula's so desperately need some help. Thanks

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  • Latency issues over internet

    - by Stevo
    I have a Media Temple server running http://www.popsapp.com which I am having latency issues with. If I run ab -n 100 -c 10 http://www.popsapp.com/ from my local machine I get very bad stats e.g.: Connection Times (ms) min mean[+/-sd] median max Connect: 179 3375 2185.4 2837 12525 Processing: 0 505 693.3 229 4564 Waiting: 0 50 115.4 0 415 Total: 964 3880 2094.5 3159 12608 Whereas if I run it from a rackspace server I have I get this: Connection Times (ms) min mean[+/-sd] median max Connect: 75 76 3.3 75 84 Processing: 235 339 81.4 315 579 Waiting: 159 249 61.7 234 411 Total: 311 415 82.0 390 663 To me this looks like intermediate network issues, but I wouldn't have thought it could be this bad! Any ideas how I can improve it? Here's the trace route traceroute to www.popsapp.com (216.70.105.183), 64 hops max, 52 byte packets 1 192.168.2.1 (192.168.2.1) 3.738 ms 0.953 ms 1.418 ms 2 host-92-22-112-1.as13285.net (92.22.112.1) 27.409 ms 97.093 ms 78.858 ms 3 host-78-151-225-141.static.as13285.net (78.151.225.141) 61.830 ms 170.484 ms 113.288 ms 4 host-78-151-225-80.static.as13285.net (78.151.225.80) 101.513 ms host-78-151-225-22.static.as13285.net (78.151.225.22) 64.718 ms 47.309 ms 5 xe-11-1-0-rt001.sov.as13285.net (62.24.240.14) 98.381 ms 114.424 ms xe-11-1-0-rt001.the.as13285.net (62.24.240.6) 96.592 ms 6 host-78-144-1-59.as13285.net (78.144.1.59) 36.799 ms host-78-144-1-63.as13285.net (78.144.1.63) 178.426 ms host-78-144-1-61.as13285.net (78.144.1.61) 85.516 ms 7 xe-10-0-0-scr010.thn.as13285.net (78.144.0.224) 88.158 ms host-78-144-0-207.as13285.net (78.144.0.207) 35.132 ms host-78-144-0-153.as13285.net (78.144.0.153) 121.464 ms 8 limelight-pp-thn.as13285.net (78.144.3.6) 46.987 ms limelight-pp-sov.as13285.net (78.144.5.18) 108.025 ms 40.169 ms 9 tge11-1.fr4.lga.llnw.net (69.28.172.149) 109.603 ms ve6.fr4.lon.llnw.net (68.142.88.221) 121.681 ms 38.609 ms 10 tge11-1.fr4.lga.llnw.net (69.28.172.149) 111.981 ms 113.744 ms 111.711 ms 11 tge8-2.fr4.iad.llnw.net (69.28.189.34) 117.102 ms ve5.fr4.iad.llnw.net (69.28.171.214) 184.372 ms 146.178 ms 12 cr02-1-1.iad1.net2ez.com (65.97.48.254) 182.880 ms net2ez.tge2-2.fr4.iad.llnw.net (69.28.156.170) 150.489 ms 121.862 ms 13 65.97.50.26 (65.97.50.26) 184.620 ms cr02-1-1.iad1.net2ez.com (65.97.48.254) 156.136 ms 131.963 ms 14 65.97.50.26 (65.97.50.26) 124.899 ms 126.537 ms 123.322 ms 15 e1.4.as02.iad01.mtsvc.net (70.32.64.246) 134.647 ms 186.307 ms 211.059 ms 16 popsapp.com (216.70.105.183) 118.876 ms 113.189 ms vzx258.mediatemple.net (216.70.104.17) 131.012 ms Looks to me like there is significant delay across the limelight network. This would explain why the traceroute via my rackspace server doesn't suffer from the same delay as they will be using their own trunk.

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  • iis7 bandwith throttling for downloads via iis media services?

    - by MikeJ
    I am looking after a sever that is managing the downloads of software updates released by the company where I work. The throttle in IIS7 seems to limit the total rate and not the rate each individual download gets. I was thnking on installing media services, adding .zip as a type and then throttling the individual connection rate based on what I read. Is this how this sort of thing is done with IIS7?

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  • What does this UDP Packet mean ?

    - by asksuperuser
    I'm total newbie at tcp/ip and I was experimenting with Wireshark. What this mean: 1824 578.194204 xxx.xxx.xxx.xxx yyy.yyy.yyy.yyy UDP Source port: 17500 Destination port: 17500 In data I can see that my user pc name is sent (happily it's a generic name): does this mean someone is trying to hack my pc ?

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  • Best tools for "ssh tail -f" style log file monitoring and analysis

    - by dougnukem
    I'm looking for a tool to monitor custom PHP Error logs/Apache and possibly Java logs on remote development servers. I'm not looking for a full production log system like Splunk, but something that's a little more flexible than an ssh terminal doing a "tail -f". Perhaps something that will: * Monitor multiple log files to my local machine for searching/analysis later * Allow "alerts" when certain strings appear in the log * Provide some kind of tabbed/dashboard view of the multiple logs being monitored (in total less than 10 logs).

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  • how to see disk details from linux machine with which command?

    - by jennifer
    hi all subject: LINUX - release.5.4- verify disk details from linux with sfdisk -s I can see the disk capacity as the following: sfdisk -s /dev/cciss/c0d0: 143338560 total: 143338560 blocks but how to see also the disk details as disk manufacture ... etc I try the: , but I not get the right info -(: hdparm -i /dev/cciss/c0d0 /dev/cciss/c0d0: HDIO_GET_IDENTITY failed: Inappropriate ioctl for device

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  • What is the maximum memory a process (MySQL) can consume on a 32-bit OS?

    - by mmattax
    I have MySQL running on a 32-bit RHEL box. The server itself has 4GB total memory with 2GB allocated to MySQL. I would like to know the max amount of memory I can put in the box and how much of that I can allocate to MySQL. I have heard both 2GB and 4GB as the per-process-limit on a 32-bit OS... Ultimately I'd like to know if I can increase the memory for MySQL without upgrading to a 64-bit OS.

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  • vmware esx licensing limit on vCPUs per VM

    - by maruti
    when a server has more than 8 cores per CPU (total 16 logical procs) and ESX standard license is applied, what does it mean for VM performance? Since each VM on host is allowed only 4 vCPUs max VMWare ESX/ESXi limits the no of vCPUs per guest VM depending on the license: standard Lic = 4 vCPU Advanced Lic = 4 since i dont know exact number is there need to upgrade to Advanced version for any perf benefits if none of VMs have workloads that need more than 4 vCPUs?

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