The Research Database Complex (RDC) at Indiana University
On this page:
- System overview
- System information
- Storage information
- Working with data containing PHI
- System access
- Computing environment
- Transferring your files to the RDC
- Application development
The Indiana University Research Database Complex supports research-related databases and data-intensive applications that require databases. The RDC supports MySQL and Oracle databases, and provides an environment for database-driven web applications focusing on research.
The system runs Red Hat Enterprise Linux 5 (RHEL 5). User home directories reside on a network-attached storage (NAS) device. You have a 100 GB (default) disk quota, which is shared with Big Red II, Karst, and Mason, if you have accounts on those systems.
The RDC offers the following database accounts:
- MySQL: The RDC supports MySQL Enterprise Server (version 5.5.8 Advanced). Access to phpMyAdmin is created for you by default.
- Oracle: MySQL can meet the majority of database needs. However, if your research has an immediate requirement for specific functionality in Oracle, you may request to be considered for an Oracle database account (Oracle Database 11g Enterprise Edition Release 18.104.22.168 - 64bit Production). To do so, follow the instructions in the RDC Database and Web Services Account Application.
Note: The RDC maintenance window is the first Tuesday of each month, 7am-7pm. Notice of any emergency downtime will be posted at Status.IU.
|System configuration||Aggregate information||Per-node information|
|Machine type||Research database system|
|Operating system||Red Hat Enterprise Linux 5 (RHEL 5)|
|Memory model||Distributed and shared|
|CPUs||Intel Xeon E5620 2.40 GHz (HP)
Intel Xeon Quad Core 1.6 GHz (Dell)
|Nodes||3 Hewlett Packard DL 180 G6 Oracle servers
1 Hewlett Packard DL 180 G6 MySQL server
1 Dell 2950 Database Driven Web Services
|RAM||288 GB||72 GB (HP)
8 GB (Dell)
|RPeak||307.2 gigaFLOPS||76.8 gigaFLOPS|
Database storage and file systems
MySQL and Oracle storage is provided via RAID 6 volumes (block-level striping with double distributed parity) on a fiber channel array, currently 48 TB in size.
Home directories with 100 GB default quotas are provided via NAS over NFS.
Shared scratch space is hosted on the Data Capacitor II (DC2) file
system. The DC2 scratch directory is a temporary workspace. Scratch
space is not allocated, and its total capacity fluctuates based on
project space requirements. The DC2 file system is mounted on IU
research systems as
/N/dc2/scratch and behaves like any
other disk device. If you have an account on an IU research system,
you can access
username with your IU Network ID username). Access to
/N/dc2/projects requires an allocation. For details, see
The Data Capacitor II and DC-WAN high-speed file systems at Indiana University. Files in shared scratch space may be purged if
they have not been accessed for more than 60 days.
Backup and purge policies
RDC MySQL database account owners are responsible for creating backups of their databases.
Incremental backups of the RDC Oracle databases occur at various times between 1am and 6am, Sunday through Friday.
Full backups occur 1am-5am every Saturday. Backups are retained for 30 days.
Working with data containing PHI
The Health Insurance Portability and Accountability Act of 1996 (HIPAA) established rules protecting the privacy and security of individually identifiable health information. The HIPAA Privacy Rule and Security Rule set national standards requiring organizations and individuals to implement certain administrative, physical, and technical safeguards to maintain the confidentiality, integrity, and availability of protected health information (PHI).
This system meets certain requirements established in the HIPAA Security Rule that enable its use for research involving data that contain protected health information (PHI). You may use this resource for research involving data that contain PHI only if you institute additional administrative, physical, and technical safeguards that complement those UITS already has in place. For more, see When using UITS Research Technologies systems and services, what are my legal responsibilities for protecting the privacy and security of data containing protected health information (PHI)? If you need help or have questions, contact UITS HIPAA Consulting.
Requesting an RDC account
To request an account on an Indiana University research system, see At IU, if I already have some computing accounts, how do I get others? Account availability depends on your eligibility.
You will receive confirmation in email when your RDC account is created.
Requesting an RDC database account
Your RDC account confirmation message will direct you to the RDC Database and Web Services Account Applicationfor requesting an RDC database account.
You will receive a message in email confirming the creation of your database schema, instance, or server. This "RDC Welcome Letter" will include your database login credentials and information about connecting to your database. UITS recommends saving this email message for future reference (e.g., in case you forget the database password; otherwise, you would need to contact the UITS High Performance Systems team to have your database password reset).
Connecting to your RDC database
For instructions on connecting to your RDC database, see On the Research Database Complex at IU, how do I access my MySQL database?
The Bash shell
By default, new accounts on the RDC are assigned the Bourne-again shell (i.e., the Bash shell). When you log in, the Bash shell reads and executes commands from the following startup files (in this order):
/etc/profile ~/.bash_profile ~/.bashrc
When you log out, the Bash shell reads and executes commands from
~(tilde) represents your home directory (e.g.,
.bash_profilefile in your home directory).
In the Bash shell:
- To display the value of an environment variable, on the command line, enter:
VARNAME with the name of an environment
VARNAME with the name of an environment
EDITOR) and replace
with the desired value (e.g.,
vi). The value will remain
changed until you log out from the system or exit the shell.
export VARNAME=VALUEline to your
For example, to make
vi your default text editor, add
this line to your
After you save and exit
~/.bash_profile, the new
environment variable will take effect the next time you log into the
system. To make your change take effect immediately, on the command
Changing your shell
In addition to the Bash shell, the RDC supports the TC (
tcsh), C (
csh), Korn (
sh) shells. To change your shell on the RDC, use
||Changes your shell only on the node on which you run it, and leaves the other nodes of the cluster unchanged|
||Prompts you with the shells available on the system, and changes your login shell system-wide within 15 minutes|
Transferring your files to the RDC
- SCP: This command-line utility is included with OpenSSH. Basic use is:
scp username@host1:~/file1 username@host2:~/file1_copy
For example, to copy a file from your home directory on your local
~/foo.txt) to your home directory on the
RDC, on the command line, enter (replace
your IU Network ID username):
scp ~/foo.txt email@example.com:~/foo.txt
For example, to transfer a file using command-line SFTP from your
home directory on your local computer (e.g.,
to your home directory on the RDC, on the command line, enter (replace
username with your IU Network ID username; at the
password prompt, enter your Network ID
$ sftp firstname.lastname@example.org email@example.com's password: Connected to rdc.uits.iu.edu. sftp> put ~/foo.txt Uploading foo.txt to /N/hd02/username/RDC/foo.txt foo.txt 100% 43MB 76.9KB/s 09:39 sftp> exit
For more, see What is SFTP, and how do I use it to transfer files?
In addition to hosting research databases, the RDC provides an environment for developing database-driven web applications with a research focus. For details, see Web Services on the IU Research Database Complex.
Oracle: For further documentation, see the Oracle Database Documentation Library, 11g Release 2 (11.2), and the following online guides:
- Oracle Database New Features Guide
- Oracle Database Concepts
- Oracle Database Online Documentation Library Master Glossary
- Advanced Application Developer's Guide
- Oracle Database Reference
- SQL Language Reference
- PL/SQL Language Reference
- Application Express (ApEx) Documentation
- ApEx Developer's Guide
- ApEx Application Builder User's Guide
MySQL: For further documentation, see the MySQL Reference Manual.
The RDC is strictly devoted to supporting research. The RDC is not an instructional, classroom environment.
For RDC usage policies, including information about your responsibilities for maintaining database security and acknowledging grant support, see Research Database Complex (RDC) usage policies.
- If you have a system-specific question about Big Red II, Karst, Mason, or the Research Database Complex (RDC) contact the High Performance Systems (HPS) team.
- If you have questions about the Scholarly Data Archive (SDA), contact the Research Storage team.
- If you have questions about shared scratch or project space on the Data Capacitor II or Data Capacitor Wide Area Network (DC-WAN) file system, contact the High Performance File Systems (HPFS) team.
- If you have questions about the development tools, compilers, scientific or numerical libraries, or debuggers available on the research computing system, contact the Scientific Applications and Performance Tuning (SciAPT) team.
- If you have questions about the statistical and mathematical applications available on the research computing systems, contact the Research Analytics group.
- If you have questions about the bioinformatics and genome analysis packages available on the research computing systems, email the National Center for Genome Analysis Support (NCGAS).
For general inquiries about UITS Research Technologies systems and services, complete and submit the Research Technologies request for help form.