A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.
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Transcript of A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.
![Page 1: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/1.jpg)
A quick introduction to SANs and Panasas ActivStor
Kevin Haines, eScience Centre, STFC, RAL
![Page 2: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/2.jpg)
WikiPedia defines a SAN:
A storage area network (SAN) is an architecture to attach remote computer storage devices (such as disk arrays, tape libraries, and optical jukeboxes) to servers in such a way that the devices appear as locally attached to the operating system.
![Page 3: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/3.jpg)
It’s like a LAN...
SAN Topology
Host/HBA 1
Host/HBA 2
Host/HBA 3
Storage 1
SAN Switch
Storage 2
![Page 4: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/4.jpg)
Storage 1
SAN Switch
Storage 2
Host/HBA 1
Host/HBA 2
Host/HBA 3
It’s like a LAN... it has a switch...
SAN Topology
![Page 5: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/5.jpg)
Storage 1
SAN Switch
Storage 2
Host/HBA 1
Host/HBA 2
Host/HBA 3
It’s like a LAN... it has a switch, and network cards.
SAN Topology
![Page 6: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/6.jpg)
Storage 1
SAN Switch
Storage 2
Host/HBA 1
Host/HBA 2
Host/HBA 3
It’s like a LAN... it has a switch, and network cards.
SAN Topology
![Page 7: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/7.jpg)
It’s like a LAN...but a little different.
SAN Topology
Storage 1
SAN Switch
Storage 2
Host/HBA 1
Host/HBA 2
Host/HBA 3
Fibre Connectors 2/4/8Gb/s
WWNs
Initiators Targets
![Page 8: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/8.jpg)
Zoning implemented by the switch
Controlling Access
Zone 1 = HBA1 + Storage1Zone 2 = HBA2 + HBA3 + Storage 2
Storage 1
SAN Switch
Storage 2
Host/HBA 1
Host/HBA 2
Host/HBA 3
![Page 9: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/9.jpg)
LD3
LD2
LUN masking on the storage array
Controlling Access
Zone 1 = HBA1 + Storage1Zone 2 = HBA2 + HBA3 + Storage 2
Storage 1
SAN Switch
LD1
Host/HBA 1
Host/HBA 2
Host/HBA 3
HBA2
HBA2
HBA3
![Page 10: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/10.jpg)
LD3
LD2
LUN masking on the storage array
Controlling Access
Zone 1 = HBA1 + Storage1Zone 2 = HBA2 + HBA3 + Storage 2
Storage 1
LD1
Host/HBA 1
Host/HBA 2
Host/HBA 3
HBA2
HBA2
HBA3 SAN Switch
![Page 11: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/11.jpg)
HOST
Multipath
Increasing Resilience
Storage 1
SAN Switch 1HBA 1
SAN Switch 2HBA 2
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Questions about SANs?
![Page 13: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/13.jpg)
Panasas ActivStor
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Panasas ActivStor
![Page 15: A quick introduction to SANs and Panasas ActivStor Kevin Haines, eScience Centre, STFC, RAL.](https://reader035.fdocuments.net/reader035/viewer/2022062417/5515f3d755034694308b45f2/html5/thumbnails/15.jpg)
Panasas ActivStor
•Director Blades•Meta-data and volume management services•NFS access gateway
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Panasas ActivStor
•Storage Blades• Two disks (up to 2TB per blade)•2xGb/s ethernet (failover mode)•11 per shelf (must be managed by DB)
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Panasas ActivStor Resilience
•Data is striped across all Storage Blades (RAID5 or RAID1)•One or more Storage Blades’ worth of space reserved for failures•System monitoring for pre-emptive actions (Blade Drain)•Two or more Director Blades can provide failover for each other
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Panasas ActivStor Performance DirectFLOW clients
Available for most major Linux distributions
Directly communicates with Storage Blades
RAID computations performed by client ~5000 supported (12000 option)
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Panasas ActivStor Performance DirectFLOW clients
Available for most major Linux distributions
Directly communicates with Storage Blades
RAID computations performed by client ~5000 supported (12000 option)
Results show scalable claim is true RAL: 1.2 GB/s from 22 nodes (2 shelves) RoadRunner: 60GB/s (103 shelves)