What is DSSD and how can I use it?

#1

Hi,

I just created a new baremetal instance (C2L), 50 GB + 250 GB DSSD.
What the hell is DSSD? I googled it, it seems to be a storage company?

When the machine powered up and I executed df command, I got this:

Filesystem      Size  Used Avail Use% Mounted on
udev             16G     0   16G   0% /dev
tmpfs           3.2G   24M  3.2G   1% /run
/dev/nbd0p1      46G  2.6G   42G   6% /
tmpfs            16G   80K   16G   1% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs            16G     0   16G   0% /sys/fs/cgroup
/dev/nbd0p15     99M  258K   99M   1% /boot/efi
tmpfs           3.2G     0  3.2G   0% /run/user/1001

so where are the 250 GB? I only see 50 GB - /dev/nbd0p1.

lsblk shows me:

NAME      MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda         8:0    0 238.5G  0 disk
└─sda1      8:1    0 238.5G  0 part
nbd0       43:0    0  46.6G  0 disk
├─nbd0p1   43:1    0  46.5G  0 part /
└─nbd0p15  43:15   0   100M  0 part /boot/efi
nbd1       43:32   0  46.6G  0 disk

how can I use these 250 GB? I also was reading that after I reboot the machine, DSSD will be erased… I am confused. :frowning:

#2

Hello,

The DSSD is a physical storage type available only for C2L instances.
It is a physical local SSD connected to the SATA port of the Bare Metal instance.
You can use this storage for temporary or cache data or for running applications that are very latency critical.
Please note that once you archive a C2L instance, only the NBD volumes are uploaded to the Permanent Storage Cluster. The data on the DSSD drive will be erased, so make sure to move it to a NBD volume before archiving a C2L instance.

Benedikt

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