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VM flavors

Virtual machine flavors allow you to choose the size of your virtual machine. The selection available can be shown using

Additional flavors

Additional flavors, e.g. cores/RAM/iops, are available upon request (and approval). Please use the support portal.

Available flavors

$ openstack flavor list

taylor@DESKTOP-99MRDDO:~$ openstack flavor list
+--------------------------------------+----------------------------+-------+------+-----------+-------+-----------+
| ID                                   | Name                       |   RAM | Disk | Ephemeral | VCPUs | Is Public |
+--------------------------------------+----------------------------+-------+------+-----------+-------+-----------+
| 019bba95-4b83-4f27-b04a-bd52f207f0e6 | a16-ram32-disk50-perf1     | 32768 |   50 |         0 |    16 | True      |
| 07f46f08-16d1-4651-9367-c037fdd9c013 | a16-ram32-disk20-perf2     | 32768 |   20 |         0 |    16 | False     |
| 090fccac-e302-48f6-8d0f-1004da5c7d17 | a12-ram24-disk80-perf2     | 24576 |   80 |         0 |    12 | False     |
| 0b8f95f3-a408-406c-a7dd-14a4b5caa558 | a4-ram8-disk80-perf2       |  8192 |   80 |         0 |     4 | False     |
| 0dc5bd7c-e85a-498e-88a3-b950ea5ab106 | a1-ram2-disk80-perf1       |  2048 |   80 |         0 |     1 | True      |
| 12c044f0-842f-48d4-9553-700095cb5153 | a2-ram4-disk0              |  4096 |    0 |         0 |     2 | True      |
| 1d15e2d5-b031-44b7-99f1-648c7d8af6b1 | a8-ram16-disk80-perf2      | 16384 |   80 |         0 |     8 | False     |
...

Flavors are declined in several versions offering different levels of performances. The suffix -perf1 or -perf2 behind a flavor means different level of iops and write speed.

Example :

flavor max performances
a8-ram16-disk20-perf1 iops: 500. read and writes : 200MB/s
a8-ram16-disk20-perf2 iops: 1000. read and writes : 400MB/s

Warning

the -perf2 flavors are only available upon request, please contact our support to enable it for your project.

You can see all flavor properties using the command openstack flavor list --long

$ openstack flavor list --long
+--------------------------------------+---------------------------+------+------+-----------+-------+-----------+------+-------------+--------------------------------------------------------------------+
| ID                                   | Name                      |  RAM | Disk | Ephemeral | VCPUs | Is Public | Swap | RXTX Factor | Properties                                                         |
+--------------------------------------+---------------------------+------+------+-----------+-------+-----------+------+-------------+--------------------------------------------------------------------+
[...]
| 019bba95-4b83-4f27-b04a-bd52f207f0e6 | a16-ram32-disk50-perf1     | 32768 |   50 |         0 |    16 | True      |      |         1.0 | quota:disk_total_iops_sec='500', quota:disk_write_bytes_sec='209715200'
| 07f46f08-16d1-4651-9367-c037fdd9c013 | a16-ram32-disk20-perf2     | 32768 |   20 |         0 |    16 | False     |      |         1.0 | quota:disk_total_iops_sec='1000', quota:disk_write_bytes_sec='419430000'
| 090fccac-e302-48f6-8d0f-1004da5c7d17 | a12-ram24-disk80-perf2     | 24576 |   80 |         0 |    12 | False     |      |         1.0 | quota:disk_total_iops_sec='1000', quota:disk_write_bytes_sec='419430000'
| 0b8f95f3-a408-406c-a7dd-14a4b5caa558 | a4-ram8-disk80-perf2       |  8192 |   80 |         0 |     4 | False     |      |         1.0 | quota:disk_total_iops_sec='1000', quota:disk_write_bytes_sec='419430000'
[...]
+--------------------------------------+---------------------------+------+------+-----------+-------+-----------+------+-------------+--------------------------------------------------------------------+

The important fields are

Field Description
RAM Memory size in MB
Disk Size of disk in GB. 0 means that the disk is the same size as the image
Ephemeral Size of a second disk. See the ephemeral disks section for more details
VCPUs Number of virtual cores

GPUs

You can have a dedicated NVidia GPU T4 attached to your VM using flavors prefixed with nvt4

+--------------------------------------+----------------------------+-------+------+-----------+-------+-----------+
| ID                                   | Name                       |   RAM | Disk | Ephemeral | VCPUs | Is Public |
+--------------------------------------+----------------------------+-------+------+-----------+-------+-----------+
| 4741adad-2653-4be8-8e93-45c1dc88927d | nvt4-a8-ram24-disk80-perf2 | 24576 |   80 |         0 |     8 | False     |
| 5465012f-82ae-4bd2-894d-e7bb7599be31 | nvt4-a8-ram24-disk50-perf2 | 24576 |   50 |         0 |     8 | False     |
| 780a7aa8-3930-423c-9661-da74815c8ffe | nvt4-a8-ram24-disk0        | 24576 |    0 |         0 |     8 | True      |
| 7ab7ec3b-98fb-4fee-abf6-4428d246084b | nvt4-a8-ram24-disk50-perf1 | 24576 |   50 |         0 |     8 | True      |
| 8f7ef28d-1b7c-4c2f-890d-6160f463d7ce | nvt4-a8-ram24-disk80-perf1 | 24576 |   80 |         0 |     8 | True      |
+--------------------------------------+----------------------------+-------+------+-----------+-------+-----------+
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