Arena iSCSI Presentation: iSCSI vs. NAS
Jan., 2013
MaxTronic International Co., Ltd.
Storage Environment
• DAS
Direct Attached Storage
• SAN
Storage Area Networks
• NAS
Network Attached Storage
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DAS
FC / IP SAN
NAS
Application software
File system
Networking
FC / SAS / SCSI / eSATA
RAID
Networking
File system
FC / iSCSI RAID
NAS
Networking
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DAS - Direct Attached Storage
 Data storage connect directly to a server or workshop
through Host Bus Adapter (HBA), there is no network
between storage and host servers
Storage
Storage
Server A
Ethernet
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SAN - Storage Area Networks
 A dedicated data storage network which can be accessed by
multiple servers
Client
Server A
Storage
SAN
LAN
Data
Storage
Command
Server B
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Client
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NAS - Network Attached Storage
 A file level computer data storage connect to other device
on TCP/ IP network
Client
Server B
Ethernet
NAS
Client
NAS
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Server A
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Difference of iSCSI, NAS - 1
Network Attached Storage (NAS) uses
File-Level protocols such as NFS or
SMB/CIFS for remote files sharing.
NAS
iSCSI
Computer
Computer
File System
File Level
Block Level
Same as traditional SCSI and FC
interface, iSCSI require Block-Level
access to the hard drives such as
email servers, databases, and high
usage file servers.
File System
NAS
Storage
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iSCSI
Storage
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Difference of iSCSI, NAS - 2
NAS
IP-SAN (iSCSI)
Device
RAW device + format type
RAW device
Internal Access
File Level
Block Level
Flexibility
Bad
Good
Scalability
Poor
High
Protocol
NFS/CIFS/AFP
iSCSI
Performance
Low
High
Suitability
Small Files
Big Files
Share Concept
Data Sharing
Storage Sharing
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Why 1Gb iSCSI?
 Low Total Cost of Ownership
 Deploy SAN infrastructure on the existing Ethernet
infrastructure
 Share the 10Gb infrastructure NIC, switch, cables
 Leverage technology expertise



The same technology as existing network topology
No additional training needed
Easy management and maintenance
 Upgrade performance from existing 1Gb iSCSI
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IP SAN Structure
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iSCSI Application - 1
Server Virtualization
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SAN management
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iSCSI Application - 2
Surveillance
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Nova 1Gb iSCSI RAID Overview
Nova 29S
Nova 39S
Nova 49S
Controller
Single
Single
Single
Controller CPU
1.2GHz
1.2GHz
1.2GHz
Cache Memory
Up to 4GB DDR II
Up to 4GB DDR II
Up to 4GB DDR II
Host Channel No.
(4+2) x 1Gb iSCSI
(4+2) x 1Gb iSCSI
(4+2) x 1Gb iSCSI
Disk Interface
6Gb SAS / SATA /SSD
6Gb SAS / SATA /SSD
6Gb SAS / SATA /SSD
Hot Swappable
trays
12 x 3.5"
16 x 3.5"
24 x 3.5"
Up to 120 disks
Up to 120 disks
Up to 120 disks
Embedded GUI, CLI through
standard LAN
Embedded GUI, CLI through
standard LAN
Embedded GUI, CLI through
standard LAN
2 x 400W P/S, 2 x Fan
Module
2 x 500W P/S, 2 x Fan
Module
3 x 400W P/S, 2 x Fan
Module
JBOD, 0, 1, 3, 5, 6, 10, 30, 50,
60, NRAID
JBOD, 0, 1, 3, 5, 6, 10, 30,
50, 60, NRAID
JBOD, 0, 1, 3, 5, 6, 10, 30, 50,
60, NRAID
Model
Expansion
Management
Hot Swap Parts
RAID Levels
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1Gb iSCSI Performance Comparison
Nova 39S
RAID Level \ I/O test
Read
Write
R0
286 MB
223 MB
R5
270 MB
183 MB
RAID Level \ I/O test
Read
Write
R0
256 MB
177 MB
R5
243 MB
153 MB
SS-6603E
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High Scalability
 Internal SAS expanders enable easy to
connect another SAS 6Gb JBOD
enclosures up to 7 x JBOD, scalable up
to 120 drives
 Support latest 3TB HDD
 Feasible for 24x7 operation.
Max. 120 disks =
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New features from
Nova Entry Series
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Easy Configuration & Management
• Embedded, browser based Graphic User Interface.
• Quick setup menu to allow setup RAID level in only 3 steps.
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Modularized and ECO friendly Design
 Fully modularization, designed for easy configuration,
easy field service, easy inventory management
 Shared modules for different platforms:
 Same controller module for 2U, 3U, 4U
 Same P/S module for 2U, 4U
 Same Fan module for 3U, 4U
 Same Cache backup module for 3U, 4U
 Eco Friendly design
Smart FAN
Control
ROHS
Compliance
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Disk
Standby
80% High Efficiency
Power Supply
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Arena Data Care Features
RAID Level
Support RAID levels 1, 3, 5, and 6 to prevent for drive failure.
Sustained read performance even in degrade mode.
Block 1
Block 2
Block 3
Block 4
Block 5
Block 6
Block 1
Block 3
Parity (5,6)
Block 2
Parity (3,4)
Block 5
Parity (1,2)
Block 4
Block 6
Cloning
Sick
Fail
Roaming
2nd disk
Fail
1st Disk
Fail
RAID 5
Fail~
Working
Disk Cloning
A method to automatically copy data to spare disk and replace the sick disk.
It could be configured to trigger by the following conditions:
• Over bad block threshold of disk.
• Detect SMART warning from disk.
Disk cloning is to prevent a rebuild from ever occurring and having the unit in
degraded mode.
On-line Array Roaming
Array member disks has recorded specific Identification when original RAID
system or controller faulty, the function provides a easily way to recognized
data back by just move member disks to the same model and working RAID
system.
Array
Recovery
RAID 5
OK
Array Recovery
A embedded utility to rescue array set back from a fatal error of when parity
array (RAID 3/5/6) unexpected lose too many disks and makes array fail.
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Utility Highlights
PathGuard™ MPIO
A specialist software utility focusing on I/O load balancing
while increasing performance by leveraging end-to-end
I/O path failover and failback, and Multiple path to each
device. This software is available in all Redundant series
which ensuring business continuity in any event of
performance is a priority.
RAIDGuard Central™ (RGC)
A free centralized management software utility to
provides centralized monitoring multiple RAID systems by
through Ethernet at a local area network. Easier install
RGC to a normal PC as an agent and then any PC/server
could monitor to RAID system remotely. Allow customer
to warning the engineer real-time with mail sending and
most popular web messenger: MSN.
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Feature Highlights
Encryption
ASIC
Embedded-in
Encryption
Key
MaxSure
Arena unique F/W feature to support SED (Self Encrypting Drive), the drives
are embedded with encryption ASIC and encryption key, to encrypt/decrypt
data write / read to the drives automatically. The MaxSure are the 2 features
for SED :
• Instant Secure Erase
• Authentication Key Management
LUN Masking
LUN (Logical Unit Number) Masking is an authorization process that makes a
LUN available to some hosts and unavailable to other hosts. LUN Masking is
implemented primarily at the HBA level. LUN Masking implemented at this
level is vulnerable to any attack that compromises the HBA.
LUN Masking support by storage is important because Windows based
servers attempt to write volume labels to all available LUN's. This can render
the LUN's unusable by other operation systems and can result in data loss.
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Summary
More
Green
More
Intelligent
More
Secure
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