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More SGI Origins links:
+ Overview of System Resources
+ Filesystem Access and Policies
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NCCS SGIs: Filesystem
Access and Policies
General data storage policies
- Source trees actively in use are best kept in home directories on /home
- Files actively being read or written by running jobs should be kept in nobackup area.
- Filess that need to be kept permanantly to be accessed at some future date should be tarred together in the units by which they will be recalled and archived in DMF filesystem.
DMF filesystems and policies
| Filesystem |
Origin Mount |
Altix Mount |
Discover Mount |
Skulked |
DMF |
Backup |
Hardware |
Size |
Access |
|---|
| /g1 |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
4.0T |
DMF Users |
| /g2 |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
4.0T |
DMF Users |
| /g3 |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
4.0T |
DMF Users |
| /g4 |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
4.0T |
DMF Users |
| /g5 |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
2.0T |
DMF Users |
| /g6 |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
2.0T |
DMF Users |
| /g7 |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
2.1T |
DMF Users |
| /g8 |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
2.1T |
DMF Users |
| /input |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
1.1T |
GMAO Operations |
| /map_05 |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fiberchannel |
4.3T |
MAP05/MAP06 Project |
| /verification |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fibrechannel |
1.1T |
GMAO users |
| /merra |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fibrechannel |
4.0T |
MERRA Project |
| /dao_ops |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fibrechannel |
4.0T |
GMAO users |
| /backup |
CXFS |
CXFS |
NFS |
No |
Yes |
Yes (inodes) |
DDN Fibrechannel |
4.0T |
NCCS internal users |
- Access DMF files using "dmget <list_of_files>"
- Projects
may have their own filesystems
according to need.
- Data that have been
migrated to tape can be
freed by the system at any time
if cache space drops below 10%
free space available on each
filesystem.
- These
filesystems have their inodes
backed up. Data on these filesystems are already assumed
to be stored on tape. An inode
for a file may be restored, but
if the file has already been
removed from tape, the file is
gone.
- DMF filesystems are for long-term storage needs. Use nobackup for scratch space.
- DMF directories can be access by either /archive/g#/ < user > or the new environment variable, $ARCHIVE.
User-managed filesystems and policies
| Filesystem | Origin Mount | Altix Mount | Skulked |
DMF |
Backup |
Hardware |
Size |
Access |
|---|
| /staging |
CXFS |
CXFS |
No |
No |
No |
TP9300 SATA |
933G |
dao_ops (temporary) |
| /share |
CXFS |
CXFS |
No |
No |
No |
TP9300 SATA |
1.8T |
GMAO Users |
- Each user group is responsible for its
own area. If the filesystem is
running low on space, it is the
user group's responsibility to
clean up space.
- These filesystems
are not backed up by the administration
team. Users are expected to back
up their own files.
Scratch filesystems and policies
| Filesystem | Origin Mount | Altix Mount | Skulked | DMF | Backup | Hardware | Size | Access |
|---|
| nobackup1 |
CXFS |
CXFS |
No |
No |
No |
DDN SATA |
15T |
All Origin and Altix Users |
| nobackup2 |
CXFS |
CXFS |
No |
No |
No |
DDN SATA |
15T |
All Origin and Altix Users |
| nobackup8 |
CXFS |
CXFS |
No |
No |
No |
DDN SATA |
15T |
All Origin and Altix Users |
| nobackup9 |
CXFS |
CXFS |
No |
No |
No |
DDN SATA |
15T |
All Origin and Altix Users |
| nobackup10 |
CXFS |
CXFS |
No |
No |
No |
DDN SATA |
15T |
All Origin and Altix Users |
| nobackup11 |
CXFS |
CXFS |
No |
No |
No |
DDN SATA |
30T |
All Origin and Altix Users |
| nobackup12 |
CXFS |
CXFS |
No |
No |
No |
DDN SATA |
30T |
All Origin and Altix Users |
- Any user of the system may use the local (/lscr1) scratch file system.
- Scratch filesystems are not backed up.
- /tmp on each system is not to be used
by general users. Use
the scratch areas as provided.
- Users are given a "userid" directory on one of the nobackup file
systems. A user should access this directory via the
/explore/nobackup/userid path or by $NOBACKUP. A soft quota of 200 GBs and a hard quota of
400 GBs is applied to all /explore/nobackup/userid directories. If a quota
needs to be raised, the user should send a request to USG stated the
size of the requested quota and the reason for the increase.
- Projects are given a "Project" directory on one of the nobackup file systems. Project is access via the /explore/nobackup/project path.
Home filesystems and policies
| Filesystem | Origin Mount | Altix Mount | Skulked | DMF | Backup | Hardware | Size | Access |
|---|
| /home0 |
CXFS |
CXFS |
No |
No |
Yes |
TP9300 Fiberchannel |
545G |
Origin and Altix Users |
| /home1 |
CXFS |
CXFS |
No |
No |
Yes |
TP9300 Fiberchannel |
545G |
Origin and Altix Users |
- Home filesystems are backed daily with
incremental dumps, and a full
dump is completed once a week.
- Backups of
home filesystems are kept
for at most one month.
- Home filesystems
are managed with quotas. The
default quota for users is 512MB.
Users can request a larger quota
if need is justified (/home0
and /home1 are not meant for
temporary storage or scratch
space; use the
available scratch areas if temporary
storage is needed).
*/lscr1 is a replacement for /tmp. They are skulked or cleaned on regular basis for any data over 24 hours old.*
dirac local
filesystems
| Filesystem |
Origin Mount |
Altix Mount |
Skulked |
DMF |
Backup |
Hardware |
Size |
Access |
|---|
| /lscr1 |
Local |
N/A |
Yes |
No |
No |
TP9300 SATA |
3.6T |
Dirac Users |
palm local filesystems
| Filesystem |
Origin Mount |
Altix Mount |
Skulked |
DMF |
Backup |
Hardware |
Size |
Access |
|---|
| /lscr1 |
N/A |
Local |
Yes |
No |
No |
TP9300 SATA |
3.6T |
palm Users |
e1 local filesystems
| Filesystem |
Origin Mount |
Altix Mount |
Skulked |
DMF |
Backup |
Hardware |
Size |
Access |
|---|
| /lscr1 |
N/A |
Local |
Yes |
No |
No |
TP9300 SATA |
3.6T |
e1 Users |
e2 local filesystems
| Filesystem |
Origin Mount |
Altix Mount |
Skulked |
DMF |
Backup |
Hardware |
Size |
Access |
|---|
| /lscr1 |
N/A |
Local |
Yes |
No |
No |
TP9300 SATA |
3.6T |
e2 Users |
e3 local filesystems
| Filesystem |
Origin Mount |
Altix Mount |
Skulked |
DMF |
Backup |
Hardware |
Size |
Access |
|---|
| /lscr1 |
N/A |
Local |
Yes |
No |
No |
TP9300 SATA |
3.6T |
e3 Users |
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