Upload
redhatstorage
View
356
Download
2
Embed Size (px)
Citation preview
Tony Afshary – October 2015
Seagate implementation of dense storage utilizing HDDs and SSDs
Seagate Confidential 2 Sources: Reinsel, David. “Where in the World Is Storage: A Look at Byte Density Across the Globe” IDC October 2013, IDC/EMC Digital Universe, April 2014 + Seagate Estimates and Marketing & Research
Demand GROWING at Exponential RATE
Bigger Different $-Constrained
Created
Location SHIFTING dramatically to the CLOUD
Stored
Capacity
Data Center System Spend
Stable but SLOW growth
Data is… Big Data is Bigger than MORE Data
Seagate Confidential
SYSTEMS
DEVICES
ARRAYS
Seagate is Evolving to Address Trends
Converged Infrastructure High Performance Storage
Hybrid Data Systems
Software-defined Storage
Flash Arrays
NAND PCIe Traditional Enterprise
NAND SAS Hyperscale
Desktop Notebook / Tablet
Branded NAND SATA Hybrid Kinetic
Still Growing
Expanded Offerings
Started with Our Core Products
The Intelligent Information Infrastructure
Flash Controllers
Seagate Confidential 4
Seagate Enterprise Device Portfolio H
ighe
st P
erfo
rman
ce/$
Highest GB/$ Supported by end-to-end silicon capabilities across Flash and HDDs; >1 Billion ARM CPUs shipped
Silicon technology/IP spans Flash and HDD Portfolio across PCIe, SAS and SATA
Archival HDDs Capacity
HDDs
Performance HDDs
with TurboBoost™ Flash Caching
Nytro® PCIe Flash
Accelerators with SandForce®
Technology
SAS SSDs
Mar
kets
Hyperscale
Traditional-IT
HPC
Mission-Critical/Compute Business-Critical/Near-Line
Archival
JBODs Storage Arrays
Servers
Latency
Density
Thermal
Service
PCIe M.2, 2.5
SAS 2.5, 1.8
15K/10K 2.5
NL 2.5 NL/Value 3.5
Kinetic 3.5 Archive 3.5
Perf. 3.5
Nytro PCIe SSDs
Seagate Confidential 5
Next generation storage deployment:
Seagate Confidential 6
Ceph Deployment Object Storage Daemons (OSDs): • 10s to 10000s of OSDs in a cluster • One per disk or SSD • Serves stored objects to clients • Intelligently peers to perform replication
and recovery tasks • Support for erasure encoding of objects • Support for strong consistency leveraging
write journals
DISK
FS
DISK DISK
OSD
DISK DISK
OSD OSD OSD OSD
FS FS FS FS btrfs xfs ext4
M M M
Advanced Storage: • Shingled Magnetic Recording (SMR)
Drives (drive managed) • Excellent density, cost, read performance,
and sequential write streaming. • Poor random write performance.
• PCIe Flash • Excellent performance, in server integration • Poor cost per GB.
Seagate Confidential 7
Featuring: Nytro XP6302 flash accelerator
card Nytro XD—tuned caching SW 12x 8TB SMR HDDs
Benefits Accelerate Ceph journals and Metadata
with flash
By moving this data onto flash, cost-effective SMR drives are well-suited for extremely dense object storage systems reducing storage costs by 25%.
Nearly triples Ceph object storage performance
Storage component deployment in Ceph Video recording of a live demo hosted at UTSA
Ceph RADOS Benchmarks • SMR only vs. • SMR with Journals on SSD vs. • SMR Cache Tier vs. • SMR Caching With Nytro XD
SMR only SMR withSSD
SMR CacheTier
SMR withNytro XD
MB/s 2.53 2.56 5.9 28.19
05
1015202530
MB
/s
4K Writes – 16 Threads
SMR only SMR withSSD
SMR CacheTier
SMR withNytro XD
Latency/s 0.0246 0.024 0.01 0.0022
00.005
0.010.015
0.020.025
0.03
Seco
nds
4K Writes – 16 Threads
SMR only SMR withSSD
SMR CacheTier
SMR withNytro XD
MB/s 135.532 194.556 590.4 777.05
0200400600800
1000
MB
/s
4M writes - 16 threads
SMR only SMR withSSD
SMR CacheTier
SMR withNytro XD
Latency/s 0.471 0.328 0.108 0.082
00.10.20.30.40.5
Seco
nds
4M writes - 16 threads
Seagate Confidential 9
Scaled-Up Hardware Configuration Fully Populated Open Rack:
• 18 Winterfell Servers • 33.5 TBs of Flash
• 2.2 PBs of SMR Storage