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--- en:dpi:dpi_components:qoestor:configuration:disc:start [2021/08/16 11:21] – created arusnak
+++ en:dpi:dpi_components:qoestor:configuration:disc:start [Unknown date] (current) – removed - external edit (Unknown date) 127.0.0.1
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-====== Setting up disk space  ======
-{{indexmenu_n>2}}
-QoE Stor uses several folders for storage:
-  * /var/qoestor/backend/dump – temporary data received by receivers is stored here. After loading into the database, this data is deleting.
-  * /var/lib/clickhouse/ - so called DEFAULT disk. This is where the database schema and data (raw and aggregated logs) are stored.
-  * /var/lib/clickhouse-hot/ - the so-called HOT disc.
-  * /var/lib/clickhouse-cold/ - the so-called COLD disc.
-HOT and COLD drives are used when you need to reduce the cost of storage.
-DEFAULT must be super fast (NVMe SSD, for example) in order to receive data from DPI, store it in the database in a raw log and aggregate (form an aggregated log).
-On a HOT disk, you can store an aggregated log for 1-2 weeks. A HOT disk must also be an SSD in order to build reports quickly.
-Old data can be stored on the COLD disk. COLD can be a SATA HDD disk, because reports on old data are rarely built and data can be stored on a slow disk.
-How to physically partition directories by disks, see the section [[dpi:dpi_components:qoestor:configuration:disc:split:start|Setting up storage on a separate disk ]]

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