Upgrade RS 3000 SAS G7 SE to RS 4000 SAS G7 SE. But Disk space still 720GB SAS

  • Hello All,

    I upgraded my RS 3000 SAS G7 SE to RS 4000 SAS G7 SE. Everything looks good (8 CPUs, 24GB of RAM) but Disk Space showing still 720GB SAS.


    [root@003 ~]# df -h

    Filesystem Size Used Avail Use% Mounted on

    /dev/sda3 691G 224G 432G 35% /

    tmpfs 12G 0 12G 0% /dev/shm

    /dev/sda1 477M 134M 318M 30% /boot

    /usr/tmpDSK 4.0G 137M 3.7G 4% /tmp

    [root@003 ~]#


    After Up-gradation DISK IO also too slow:


    [root@003 ~]# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync && rm -f test

    16384+0 records in

    16384+0 records out

    1073741824 bytes (1.1 GB) copied, 13.5617 s, 79.2 MB/s

    [root@003 ~]#


    How can I fix this?

    Thank you,


  • Hi, did you just dump your HDD over to the new server via

    dd if=/dev/sda ...?

    Then you also dumped the existing partition table to the new server.

    Sure you can expand your partition and file system to the desired size via fdisk and resize2fs.

  • Here is the output:


    [root@003 ~]# sudo fdisk -l


    Disk /dev/loop0: 4294 MB, 4294967296 bytes

    255 heads, 63 sectors/track, 522 cylinders

    Units = cylinders of 16065 * 512 = 8225280 bytes

    Sector size (logical/physical): 512 bytes / 512 bytes

    I/O size (minimum/optimal): 512 bytes / 512 bytes

    Disk identifier: 0x00000000



    WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.



    Disk /dev/sda: 1006.6 GB, 1006632960000 bytes

    255 heads, 63 sectors/track, 122382 cylinders

    Units = cylinders of 16065 * 512 = 8225280 bytes

    Sector size (logical/physical): 512 bytes / 512 bytes

    I/O size (minimum/optimal): 512 bytes / 512 bytes

    Disk identifier: 0x00000000


    Device Boot Start End Blocks Id System

    /dev/sda1 1 91771 737148927+ ee GPT

    [root@003 ~]#

  • Hello azizulislam,


    the output looks good. As you can see /dev/sda has indeed approx. 1TB.


    You need to resize the partition as mentioned by oliver.g . Here you can find a step-by-step tutorial on doing this: https://geekpeek.net/resize-filesystem-fdisk-resize2fs/


    Bear in mind please to make a complete backup before doing this.


    Best regards

  • Just a note from my side: I like to use gparted for partitioning, which is a live system and can be booted by selecting the matching ISO in the server control panel.

    Having a nice UI and not to fiddle with the command line can be nice sometimes.. ;)