Differences

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--- doku:vsc4_storage [2023/10/23 10:39] – [VSC-4 Storage] goldenberg
+++ doku:vsc4_storage [2023/10/23 10:55] – [Usage '/local'] goldenberg
@@ Line 2: / Line 2: @@
 VSC-4 and VSC-4 provide two unified facilities for data: the high-performance IBM Storage Scale Parallel Filesystem and a node-local flash storage. The parallel filesystem is the same on both clusters, so projects that exist on both clusters can access the same data.
-The They are accessible under:
+They are accessible under:
   * **IBM Spectrum Scale**:
@@ Line 13: / Line 13: @@
 ''$HOME'' is the location of the user UNIX home directory. It can be accessed from login and compute nodes. ''$HOME'' should be used for storing/compiling code  - data for which high concurrent job throughput and support for large file sizes is not required.
-Quota on ''$HOME'' is 100GB and 10^6 number of files and **can not** be extended
+Quota on ''$HOME'' is 100GB and 10^6 number of files and the size **can not** be extended (number of files can be).
 ==== Usage ''$DATA'' ====
-''$DATA'' is a tiered file system containing 500TB flash and around 1PB of HDD storage.
+''$DATA'' is a tiered file system containing 500TB flash and around 5PB of HDD storage.
-Quota on ''$DATA'' is 10TB and 10^6 number of files and can be extended up to 100TB. If even more
+Quota on ''$DATA'' is 10TB and 10^6 number of files and can be extended up to 100TB. If even more size is needed, specific arrangements can be made.
+==== Usage '/local' ====
+/local is a locally mounted NVMe disk. The size is about 450GB on VSC-4 and 1.8TB on VSC-5. Data retention is not guaranteed, al data is lost on a reboot, so they need to be transferred after use.
 ==== Backup Policy ====