APPENDIX C: MANAGING SSDs
An SSD is installed by default on the SN2100 model. A second SSD can be added to it by
subscribing to the RAID option (RAID1).
By default on SN3100 and SN6100 models, both SSDs are installed in RAID (RAID 1). Both of
these SSDs are also hot-swappable.
NOTE
On SN2100 models without the RAID option, the replacement of the SSD would cause logs
and static reports saved on the log partition to be lost, as well as data memorized using the
HTTP Cache option if it has been enabled.
Detecting issues
The SMART (Self-Monitoring, Analysis and Reporting Technology system) status of SSDs may be
monitored. SMART technology monitors and informs about the status of certain reliability
indicators such as the temperature, number of sectors allocated, errors while locating sectors, etc.
It therefore helps to anticipate failures.
On SN910, SN2100 and SNi40 models without the RAID option, the SMART status of the SSD is
available in the Hardware section of the Hardware widget.
On SN2100, SN3100 and SN6100 models with the RAID option, the RAID section in the Hardware
widget informs you about the SMART status of the SSDs, as well as the RAID status.
You may also log on to the appliance in console mode or via an SSH connection and obtain the
information with the following commands:
l SMART status of the SSDs: smartinfo
l If SSDs are installed in RAID: nraid -s
If an issue arises with the log partition, report it using the Properties widget either in console mode
or via an SSH connection, using the command: logdisk –c, the partition can be rebuilt using
the following command: logdisk –f
IMPORTANT
This command permanently erases data saved earlier on the log partition.
If the SMART status of an SSD shows errors, or if rebuilding your log partition fails, you can contact
your certified partner to replace your SSD.
Replacing an SSD
Depending on the model, the respective procedures are as follows:
l SN2100, without RAID option:
This procedure is to be carried out on an appliance that has been powered off. To remove the SSD,
unlock the rack with the lever, then pull out the canister with the defective SSD. Insert the new
canister with the replacement SSD obtained from your partner, until you hear a click. Once you
have inserted the new SSD, it will be detected the next time you start the appliance.
l SN2100 with RAID option, SN3100 and SN6100 (SSD in RAID 1):
This procedure is to be carried out on an appliance that is running. To remove the SSD, unlock the
rack with the lever, then pull out the canister with the defective SSD. Insert the new canister with
SNS - PRODUCT PRESENTATION AND INSTALLATION 2019
APPENDIX C: MANAGING SSDS
Page 59/66 sns-en-SNrange_installation_guide-2019 - 09/2019
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