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SRX and storage devices on SRX

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  • 1.  SRX and storage devices on SRX

    Posted 08-26-2018 16:49

    Hi everyone.

     

    Please consider the following output:

     

    DELETE-ME.PNG

     

    Flash Drive:

    Denoted by da0, but i do not see any " Slice" on the fash Drive?  Am i correct and missing something?

    Hard drive:

    seems like usb0 being used to denote hard drive ( because of the well known HDD vendor)

     

    1) What are slices in Juniper File system? Based on some goodle search,  it looks like   Disk space is divided in " Slices" then each slice is further devided into Partitions. 

     

     

    Thanks and have a nice  evening!!

     

     

     



  • 2.  RE: SRX and storage devices on SRX

    Posted 08-26-2018 19:22

    da0 - is whole disk , if you want to see slices run command "show system storage"

    /dev/da0s1a - partition "a" on slice 1 on disk da0 and so on 



  • 3.  RE: SRX and storage devices on SRX
    Best Answer

    Posted 08-30-2018 02:17

    Hi, Sara

     

    I cannot confirm the meaning of a slice but the SRX's boot media is divided in different slices (s1, s2, s3, s4) and these slices are divided in different partitions as you stated.

     

    The SRX will boot up from specific partitions in s1 and s2, usually partition "a".

     

    Each slice is partitioned in the following way:

     

    root@SRX-8# run show system storage partitions
    Boot Media: internal (da0)  <<< Nand flash
    Active Partition: da0s1a
    Backup Partition: da0s2a
    Currently booted from: active (da0s1a) <<<<< *

    Partitions information:
    Partition Size Mountpoint
    s1a 610M /
    s2a 617M altroot
    s3e 46M /config
    s3f 618M /var
    s4a 56M recovery
    s4e 5.7M

     

    * whichever partition is the active one it is known as the root partition, and the one that is not active is called the alternate partition.

     

    Also you can see the Junos version on each parition with the following command:

     

    esteban@vipfw> show system snapshot media internal
    Information for snapshot on       internal (/dev/ad0s1a) (primary)
    Creation date: Aug 17 15:28:15 2018
    JUNOS version on snapshot:
      junos  : 12.3X48-D50.6-domestic
    Information for snapshot on       internal (/dev/ad0s2a) (backup)
    Creation date: Jan 24 16:46:31 2018
    JUNOS version on snapshot:
      junos  : 12.3X48-D50.6-domestic
    

    Hopes this helps.