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Thread: NAS and RAM

  1. #1
    Join Date
    Aug 2002
    Posts
    484

    NAS and RAM

    Hi guys,

    We have a NAS server with 2GB of RAM. It gets a TON of disk traffic and it overloaded right now. Would a quick fix be to add more memory? Would that help at all relieve some load from the disks?

    Code:
    [root@nas admin]# free -m
                 total       used       free     shared    buffers     cached
    Mem:     2027       2022          4          0        408       1323
    -/+ buffers/cache:        290       1736
    Swap:         4094          0       4094
    Thanks

  2. #2
    Join Date
    Oct 2004
    Location
    Kerala, India
    Posts
    4,771
    As you can see there is enough space free in buffer, you dont need to worry here. If the buffer size is getting filled up frequently there will be memory shortage.
    David | www.cliffsupport.com
    Affordable Server Management Solutions sales AT cliffsupport DOT com
    CliffWebManager | Access WHM from iPhone and Android

  3. #3
    Join Date
    Aug 2002
    Posts
    484
    Alright, thank you. That is very good to know.

  4. #4
    Join Date
    Oct 2004
    Location
    Kerala, India
    Posts
    4,771
    See the value 1323 ie cached. Linux always uses the spare memory to cache. It is the buffer/cache section that shows how much space your applications are currently using.
    David | www.cliffsupport.com
    Affordable Server Management Solutions sales AT cliffsupport DOT com
    CliffWebManager | Access WHM from iPhone and Android

  5. #5
    Join Date
    Apr 2003
    Location
    Melbourne, AU
    Posts
    539
    I would say that there's no harm from adding RAM, but the degree of improvement it provides is highly dependent on your IO access patterns.
    WK Woon
    CTO | http://www.aflexi.net - A flexible Network
    Building the next generation CDN platform - DEMO .... coming soon

  6. #6
    Join Date
    Sep 2004
    Location
    Flint, Michigan
    Posts
    5,766
    What type of disk setup are you running?
    Mike from Zoodia.com
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