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Last Modified: Thursday, 24-Jul-2008 15:26:19 EDT
This remainder of this page is under revision, starting 2004.11.03
CSB Core Filesystems are maintained on central servers, and are available on almost all CSB-managed unix and linux computers. Many are also available on CSB-managed windows PCs. Core filesystems may be available on unix or windows computers in the individual labs.
Core-managed storage can be divided into three categories: User and group space, temporary storage, and common system disks.
Users can create, store and use files in their home directories, or on filesystems owned and controlled by their lab group. These filesystems are automounted on most CSB computers.
Your Home directory is the directory you see when you log onto a unix or linux computer. It is also available to you as a networked drive on a windows system. All home directories can be found at /srv/people/username, where username is the name you use to login to your core account. You will be limited to a quota of 350MB on /srv/people (175MB before December 1, 2004).
Many CSB labs have additional storage in the CSB. These filesystems have names of the form /csb/group/disk, where group is the name or intitials of the PI, and disk is a name or number assigned by the group. Eaxmples would be /csb/tas/5 (one of the Steitz group's filesystems) and /csb/dme/granule, belonging to the Engelman group.
We maintain two areas where any CSB user may keep files on a temporary basis. /srv/frames is primarily for temporary storage of raw crystallographic data sets while they are being processed and backed up or restored to/from tape. /srv/temp is for other temporary storage.
/srv/frames and /srv/temp have policies to remove files when they have not been accessed for 21 and 14 days respectively. Creating, reading and writing files are all considered access. Although it is possible to artificially access files to simulate use, allowing semi-permanent occupation of space, this behavior is forbidden both by CSB policy and by a decent respect for the opinions of humankind.
/srv/frames is optimized for large files (> 1MB). It is also most efficient to access /srv/frames from linux or windows computers. /srv/temp is more suitable for large numbers of small files, and for access from IRIX computers.
CSB groups can obtain space on the core disk server in increments of 20GB (usable). The cost is $250 per 20GB increment. The maximum size we support for a single filesystem is 80GB. Those CSB PIs whose grant paid for the server can get additional space at no charge.
The cost includes hardware RAID protection, daily online duplication of data (snapshot), regular backup and archiving to tape, redundancy of all major components, and access from unix/linux and windows systems.
TO obtain space, see Art Perlo or other CSB staff.
Jaz drives have been found unreliable and are no longer used in the Core. If you have to read a Jaz disk, talk to the staff -- we might be able to help.
250MB Zip drives are available on most WIndows PCs in the Core.
IEEE1394 Firewire disks are supported on some Windows and Linux PCs in the Core. Click for further information.
Last Modified: Thursday, 24-Jul-2008 15:26:19 EDT
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