Cluster Active Archive System Infrastructure ESTEC 31st May – 1st June 2005 Steve.Esson@ESA.INT CAA review
Design considerations Operating system Hardware scalability Software compatibility 3rd party products like IDL, rdbms etc. software already written for instrument data. effort in porting/reimplementation. Cost CAA review
CAA review
CAA review
Server hardware considerations License costs Processor type Memory – how big, single/dual channel Local storage – ide,sata1,u160,u320 Onboard or add-on h/w for local IO Networking h/w add-on requirements Room for further expansion on motherboard CAA review
Final server configuration Component Description Processors Intel XEON 3.0GHz * 2 SCSI Onboard dual channel Ultra320 scsi, Intel i960rs Ultra160 pci scsi controller Local storage 2* 36GB Ultra320 raid1 Video ATI rage XL 8MB PCI Peripheral slots 64bit 100MHz * 2, 64bit 66MHz * 4 USB 2 Network interface Onboard gigabit Ethernet * 2, Intel PRO/1000mt gigabit dual port adapter CD/DVD NEC ND-2500 Power Internal redundant 400 watt CAA review
Server components CAA review
Network Interfaces CAA review
Storage considerations Cost IO performance Capacity and growth Server load CAA review
Storage options direct attached (DAS) network attached (NAS) advantages: lowest cost, easiest to implement and support disadvantages: difficult to expand, difficult sharing and failover network attached (NAS) advantages: can be shared by different operating systems disadvantages: slower than SAN (more software intensive), limited by ethernet bandwidth storage area network (SAN) Advantages: speed, expandability, separate FC based connectivity Disadvantages: cost CAA review
CAA review
SAN options CAA review
Backup Expansion – any hardware solution must have the ability to increase it’s capacity along with the storage without requiring replacement. Transfer rates – this has to be sufficiently high to recover large amounts of data within a reasonable time Strategy - none Disaster recovery plan – in progress but not yet finalized CAA review
Connectivity CAA review
CAA review
CAA review
CAA review
CAA review