NAS vs. SAN Presentation

1
NAS vs. SAN Presentation

• Compare NAS with SAN.
• Introduction to Wolfman.
• What is Scyld from Penguin.

2
Traditional Mode ? DAS
Direct
Attached
Storage
3
What is NAS?

• High performance for data access.
• Ease of installation and management.
• Base on Ethernet Infrastructure.

4
What is SAN?

• Customized network device.
• Integrated storage device.
• Base on Fiber infrastructure.
• Isolated storage device.

5
Major Differences (NAS vs. SAN)

• NAS
• Provide great spaces for application server to
  be integrated.
• (Like NFS, Mail, Web, FTPetc)
• SAN
• Separate servers and storage devices into
  different units for management.
• (Like Database, VoD, Backupetc)

6
Today Total Solution

• Combines the best of both technologies
• Enhances NAS with SAN scalability and management
• Provides access to storage network backup,
  disaster recovery and storage management
• Reduces overall management complexity

7
Future ? iSCSI

• internet SCSI
• IETF Standard
• Please refer to RFC3347
• Enhances with SANs original Infrastructure

8
Wolfman
9
Surface of Wolfman (front)
10
Details for blad
Dual XEON CPU
IDE drive
ServerWorks South Bridge (under drive)
ServerWorks GE NIC, PCI-X, IDE RAID
Dual USB
ServerWorks North Bridge
Hot-swap mid-plane connector with dual GE, KVM,
Serial, USB, dual IPMI
PMC daughter card (or 2nd IDE drive)
ATI Video
11
What is FRODO
SATA or FC Daughter Card
Server Blade

SATA or FC Disk Blade
Disk Blade
12
Surface of Wolfman (rear)
Field-Replaceable Mid-Plane
Redundant Power Supplies (31)
Redundant Fans (66)
1 or 2 GE/10GE multi-function CHAMPS
(switch/management) modules
Integrated KVM switch, USB
13
Details for CHAMPS
10/100 Port Serial Port
16 x GE Ports to Server Blades (optional 2x10GE
to center 2 slots)
10GE add-on card (not shown)
IPMI Buses (incl. Keyboard/ Mouse/Serial)
8 x GE External Ports
2x10GE to other CHAMPS
14
Blade Server Feature Comparison
15
New Test Tool -- Scyld

• Structure of Scyld.
• What is PMB.
• How it works.

16
Structure of Scyld
17
PMB Functions

• PingPong
• PingPing
• Sendrecv
• Exchange
• Bcast
• Allgather
• Allgatherv
• Alltoall

• Reduce
• Reduce_scatter
• Allreduce
• Barrier

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PingPong
19
PingPing
20
Sendrecv
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Reference

• ???(2001),ltManagement of Network-Based Storage
  System ?????????gt,?????????????????,????
• http//www.adaptec.com/worldwide/product/markedito
  rial.html?cat/Technology/iSCSIprodkeyiscsi_lear
  n
• http//www.lancom.com.tw/Express/File/express25.ht
  m
• http//www.topsnet.com.tw/jerry/nas26san.htme76
  29
• http//www.scyld.com/
• http//www-unix.mcs.anl.gov/mpi/mpich/
• http//www.mpi-forum.org/