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1、 EMC Isilon vs. NetApp E-Series CAT One-Pager Competitive Analysis Overview EMC Strategy Isilon provides EMC a pathway into bandwidth and NAS spaces EMC was previously unable to penetrate. Never the less, Isilon further fragments the EMC product line, creating yet another EMC silo. Technology Isilon
2、 delivers scale-out file system technology (branded OneFS) and data management software that complements its file system (branded InsightIQ). OneFS was originally designed for large-block sequential workloads, with the release of OneFS 7.1, EMC is now targeting enterprise IT for limited workloads. O
3、neFS scales from 3 to 144 nodes; the file system is compute-intensive and delivers very low scaling per node. A principal feature of Isilons file system is expansive containers that enable a single, contiguous namespace 20PB (the current hardware limit with 4TB drives). Although Isilon has iSCSI tar
4、get support for its storage controllers, the OneFS 7.1 Web Admin Guide states that, “The iSCSI module is supported by exception only and is limited to certain use cases. It is recommended that you find other solutions for your block storage requirements” Marketed Strengths Operational SimplicityIsil
5、on has a simple, accessible user interface; deployment is fast and straightforward; adding nodes to expand performance and capacity is simple (although it can negatively affect performance). Massive ScalabilityIsilon allows single namespace 20PB. Unmatched Efficiency 80% utilization rates and automa
6、ted storage tiering (with licensed version of SmartPools), enabling the movement of data between different models/tiers within the same cluster. Impressive aggregate performanceIsilon can scale workloads over many hardware nodes to deliver impressive aggregate performance, especially for certain typ
7、es of sequential workloads. EMC claims 106GB/s throughput with 144 X-400 nodes (EMCs internal benchmarking only). Weaknesses Inefficient, hardware-intensive architecture Isilons single-node performance is weak, and those requiring significant performance will need many nodes and SSDs. HA is based on
8、 n-way parity distributed over multiple nodes, requiring a minimum of three nodes. Mixed models can be placed into the same cluster, but require a minimum of 3 equivalence class systems (i.e. 3 X200s or 3 S200s or 3 NL400s) Scaling Isilon capacity always requires additional CPU, cache, ports and SW
9、licenses as well as extensive cabling and considerable power and cooling resources, they cannot merely add an enclosure of disks. Narrowly focused designoriginally architected for sequential I/O and NFS file access protocol. Workloads that are more random, transactional, or mixed workloads are not o
10、ptimally supported. Never the less, Isilon is now targeting implementations that wish to sprinkle on some enterprise IT. iSCSI is now downplayed by Isilon for “exception only” with EMC recommending other EMC platforms for block storage requirements. Lacks enterprise availability Isilon stayed away f
11、rom quoting availability numbers, though in January 2012 EMC claimed 99% for Isilon (far less than NetApps 99.999 availability). Space utilization is particularly poor for small clusters (less than 5 nodes). Performance caveats Adding or removing nodes initiates auto-balancing, which can be extremel
12、y resource intensive, sometimes lasting days, weeks or months, while negatively impacting overall cluster performance. Specification Comparison Product Specification NetApp EMC Isilon E5460 E5560 S-Series X-Series NL-Series Max Read Throughput per rack 45GB/s 78GB/s 6GB/s 7.4GB/s Performance unknown
13、 Primarily used for archive Max Drives/Enclosure (node) 60 60 24 36 36 Drive Types NL-SAS/SSD NL-SAS/SSD SAS/SSD SATA/SSD SATA (no SSD) Solution Management System StorNext / Lustre / GPFS / etc. StorNext / Lustre / GPFS / etc. OneFS OneFS OneFS Recommended workloads High IOPS & GB/s High IOPS & GB/s
14、 High IOPS Mid capacity & performance Archives & DR Uptime 5-9s 5-9s 2-9s 2-9s 2-9s As of the issue date of this document, to the best of our knowledge, the information contained herein is an accurate result of our research and/or effort to obtain information. This information is provided AS-IS with
15、 no warranties of any kind. NetApp offers no warranty that this information has not changed since this document was issued, nor do we undertake to update this document. All specifications are subject to change without notice. NetApp, the NetApp logo, NetApp brands are registered trademarks of NetApp
16、, Inc. in the U.S. and other countries. All other brands or products are trademarks or registered trademarks of their respective holders and should be treated as such. 2014 NetApp, Inc. All rights reserved. NetApp Confidential Information. Distribution limited to NetApp partners under NDA obligations. No redistribution rights are hereby granted. Author: Terry Unrein Last Updated: February 12, 2014 In addition, files
