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--- abstract:mills:filesystems:filesystems [2021-07-15 14:28] – [Local filesystem] anita
+++ abstract:mills:filesystems:filesystems [2021-07-15 14:31] (current) – old revision restored (2018-06-08 00:43) anita
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 An  8 TB permanent filesystem is provided on the login node (head node), mills.hpc.udel.edu. The filesystem's RAID-6 (double parity) configuration is accessible to the compute nodes via 1 Gb/s Ethernet and to the campus network via 10 Gb/s Ethernet. Two terabytes are allocated for users' home directories in /home.  The remaining 6 TB are reserved for the system software, libraries and applications in /opt.
+==== Archive ====
+Each research group has 1 TB of shared group storage on the archive filesystem (/archive). The directory is identified by the research-group identifier <<//investing_entity//>> (e.g., ''/archive/it_css''). A read-only snapshot of users' files is made several times per day on the disk. In addition, the filesystem is replicated on UD's off-campus disaster recovery site. Daily [[:abstract:mills:filesystems:filesystems#archive-snapshots|snapshots]] are user-accessible. Older files may be restored by special request.
+The 60 TB permanent archive filesystem uses 3 TB enterprise class SATA drives in a triple-parity RAID configuration for high reliability and availability. The filesystem is accessible to the head node via 10 Gbit/s Ethernet and to the compute nodes via 1 Gbit/s Ethernet.
 ===== High-performance filesystem =====
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+===== Local filesystem =====
 ==== Node scratch ====
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 Each user's home directory has a hard quota limit of 2 GB.
+==== Archive ====
+Each group's work directory has a quota designed to give your group 1 TB of disk space.
 ==== Lustre ====