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With this flexibility it is easier for the administrator to cope with Snare Central growing requirements in large and busy networks.
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Snare Central disk layout
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Selecting a cylinder displays the filesystem status. The following image show the disk summary available by clicking on the corresponding disk or hovering the mouse on top of it.
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Mounting a CD, DVD or USB
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All that is needed is to specify what kind of device to mount (or unmount) and if access to this device after reboot is required or not (this checkbox actually updates /etc/fstab system file so it's persistent after a reboot if desired).
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When mounting or unmounting any device, all Snare back end processes need to be stopped manually. |
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The NAS dialogue is displayed below, which allows the user to mount and/or unmount a Network Attached Storage device making it available directly for Snare to use.
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A NAS can be mounted to increase Snare Central capacity so any new data will be stored in the network device and at the same time, all previous data stored in the server's local hard drive will still be accessible for the system to use. Be aware that that a NAS device will never be as fast as a local hard drive and this could lead to performance constraints is the system has a high EPS demand on it. Most NAS systems don’t implement synchronous write acceleration like SAN disk systems do so will perform at a lower performance than conventional local disk or fibre attached SAN disk will. Another consideration is that if Snare Central loses network connectivity to the NAS access all data stored there won't be accessible and the system may experience long time-outs when trying to retrieve any data or become non responsive.
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Once all the editable file systems sizes are set as required, the user must submit the changes to the server with the submit button (right pointing arrow). Its highly recommended to resize only one file system at a time. Upon submit a warning as shown in the next image will be prompted.
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When resizing any file system all Snare back processes need to be stopped and depending on the size of the file system this could take several minutes. |
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If no more disk space is available, the administrator can add another physical disk (or disks) to the server and after a system reboot the new drive will be available as free space in the Disk Manager ready to be assigned to existing files systems as described.
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In the case of upgraded servers, Disk Manager will detect the new disk and ask you if you want to use the whole disk to increase Snare capacity. Click the submit (arrow) button and after a few seconds the disk will be ready for use.
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