Computer Services Centre

Indian Institute of Technology Delhi

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Facilities

The CSC computing and infrastructure services are based mainly on two independent clouds. The infrastructure cloud is based on VmWare virtualization technology and the larger IITD Computing Cloud, Baadal, is based on KVM. Some services still run on bare metal (physical machines). See below for a description of the physical infrastructure and services of the CSC.

Infrastructure Servers

Main data center

Cisco UCS B200 M3: Two chassis with 16 blade servers each with 2 X 12 Cores Intel(R) Xeon(R) CPU E5-2695 v2 @ 2.40GHz  ("Ivy Bridge" Generation) and 128 GB RAM. Each blade has five virtual NICs connected  to two Fibre Interconnects with redundant paths.

Disaster recovery data center

Cisco UCS B200 M3: Two chassis with 16 blade servers each with 2 X 12 Cores Intel(R) Xeon(R) CPU E5-2695 v2 @ 2.40GHz  ("Ivy Bridge" Generation) and 128 GB RAM. Each blade has five virtual NICs connected  to two Fibre Interconnects with redundant paths.

Compute Servers

 Baadal, the IITD Computing cloud

  1. 32 blade servers each with 2x6 core Intel(R) Xeon(R) CPU X5670 @ 2.93GHz and 16 GB RAM and dual 10Gbps ethernet
  2. 16 blade servers each with 2x4 core Intel(R) Xeon(R) CPU E5540 @ 2.53GHz and 12 GB RAM and dual 1 Gbps ethernet

 HPC CUDA cluster

       A 16 node cluster each with 2 x 8 core ES-2670 (Sandybridge) CPU, 64 GB RAM and 2 x NVidia K20 GPUs. The nodes have 56 Gbps IB interconnect. See here for details.

Storage Servers

 NetApp FAS3250

      The storage consists of two controllers in active-active metro cluster mode, with one controller located in the main data center and the other one located in the disaster recovery data center. The two controllers are connected by 4 dark single mode fibres. The total usable space in the first controller in 36 TB and in the secondary controller is 33 TBEach controller has

  1.  864 10000 RPM SAS disks of  857GB
  2.  A single aggregate with 3 raid groups for primary storage.
  3. An aggregrate with 3 raid groups for active synchronous mirroring of the partner controller's primary data. 
  4.  5 spares.
  5. 4 x 1 Gbps and 4 x 10 Gbps ethernet ports. 

       The services offered through the filer are

  1.   User home spaces through NFS and CIFS protocols.
  2.   NFS  storage  for /var/spool/mail on mailstore.
  3.   NFS data stores for the infrastructure cloud.     

  HP EVA 6400 SAN

   The HPA EVA SAN has 100 Fiber Channel disks of 300 GB and another 100 Fiber Channel disks of 600 GB and gives a total usable capacity of 70 TB. The SAN has dual controllers in active-active cluster configuration and the disk array is connected to 4 Fiber Channel SAN switches. The SAN storage is virtualized with a NetApp V3210 NAS filer.

  NetApp V3210

   The storage is configured with  two controllers in active-active cluster mode, Each controller has 3 x 600G SAS disks for the root volume. The filer virtualizes the disk array of HP EVA 6400 SAN and gives a total usable disk capacity of 55 TB through NFS, which is used entirely for the NFS Datastore for Baadal, the IITD computing cloud.

Networking

The CSC network backbone is of 10 Gbps. The storage servers are connected to the backbone using multiple 10 Gbps and 1 Gbps (port channel/link aggregation and redundant) paths. The CSC backbone supports multiple VLANs for security of the infrastructure and computing clouds.

Click here for an overview of the network backbone architecture of IITD.

Operating Systems and Services

Virtual machines on CSC Infrastructure cloud

Click here to see.

CSC Desktop clients

In addition to the above services CSC also has approximately 200 desktop clients. About 80 of the run Windows 7 Enterprise and the remaining 120 run Ubuntu 12.04 64 bit desktop OS.

 

    Last Updated on Monday, 10 November 2014 21:50