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CMG 2008 Is Storage and IO Still Important in a Virtual World Storage Features and Trends

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Data Mobility through Storage Virtualization and Replication ... Stored in compact flash modules (2 per CM) and System Disks (mirrored pair per CM) ... – PowerPoint PPT presentation

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Title: CMG 2008 Is Storage and IO Still Important in a Virtual World Storage Features and Trends


1
CMG 2008Is Storage and I/O Still Important in a
Virtual World? Storage Features and Trends
  • Steve Crawford
  • Fujitsu Computer Systems
  • Storage Marketing

2
Agenda
  • Business Drivers and Technical Solutions
  • Storage Features and Trends
  • Storage Tiers
  • Solid State Drives
  • MAID (Massive Array of Idle Disks)
  • Security
  • Performance
  • Host Connectivity
  • Disaster Recovery for Business Continuity
  • Virtualization

3
Business Drivers and Storage Solutions
4
Storage Tiers
  • Select right disk drive size, speed and price for
    application use
  • Mix disk drives or tiers in same storage system
  • Storage Tiers
  • Tier 1 High performance
    Drive Sizes
    73GB to 300GB
    Fibre Channel (FC) and
    Serial Attached SCSI (SAS) -15K rpm, high
    availability
  • Tier 2 Nearline drives deliver good performance
    Drive Sizes 500GB to 1TB

    Serial ATA (SATA) - 7.2K rpm, lower price
    point, high capacity and reliable
  • Tier 3 ECO mode MAID (Massive Array of Idle
    Disks) delivers new levels of economy for
    information-at-rest
  • Tier 4 Offline for backup and recovery
  • Tape (Virtual Tape Library, Discrete Tape,
    etc. )

5
Solid State Drives (SSDs)
  • Preliminary performance claims for the EMC DMX
    flash drives are a tenfold improvement in
    response times and a thirty-fold improvement in
    maximum input/output rates relative to physical
    disk drives of equivalent capacity.
  • EMC plans to offer flash drives in 73GB and 146GB
    capacities later in 1Q08. Prices are not
    released. (Expect to be priced at 30 times the
    cost of a physical disk of equivalent capacity.)
  • Benefits
  • Higher performance
  • Eliminates the need for battery backup
  • Increased MTBF to physical disk drive
  • Lower power consumption
  • What is unknown
  • Pricing
  • Concern about flash drive service history?

6
Reduced Power Consumption
Power Footprint
ETERNUS4000 Model 500 is 6.3 better than the
CX3-80 with 420 drives ETERNUS8000 Model 900 is
5.3 better than the DMX3 with 480
drivesETERNUS8000 Model 1100 is 2.2 better than
the DMX3 with 1,020 drives
MAID Example Details
Example 32TB Cost of 80 drives spinning 24
hours/day for 1 year 1,700 Cost of 80 drives
spinning 5 hours/day for 1 year 684 Total
cost savings of nearly 60 for the drives in a
MAID group
RAID5 (41) 500GB 7.2Krpm disks 16x RAID groups
7
Case Study Use of MAID Technology
3 backup generations managed by Advanced Copy
Manager
OPC
Monday (Generation 1)- 20x 500GB Nearline
disks- 4x RAID5 (41) sets (8TB of capacity)-
Scheduled Active 6PM-8AM (14 hours)
Standard mode operational volumes- 50x 300GB
disks- 6x RAID0/1 (44) sets (7TB of capacity)-
2x hot spare drives- Fully powered 24 hours / day
OPC
Wednesday (Generation 2)- 20x 500GB Nearline
disks- 4x RAID5 (41) sets (8TB of capacity)-
Scheduled Active 6PM-8AM (14 hours)
OPC
Friday (Generation 3)- 20x 500GB Nearline
disks- 4x RAID5 (41) sets (8TB of capacity)-
Scheduled Active 6PM-8AM (14 hours)
2x hot spares activated also
20 power consumption reduction per day- normal
mode (84,974 Watt Hours)- using MAID feature
(67,746 Watt Hours)
8
MAID Management Details
  • Drive spindle motor powers down
  • On a drive basis, reduces power consumption by
    approx 75 (19.3w to 4.7w)
  • Supported on all disks
  • Enable/disable at the RAID Group level
  • RAID Group spin up
  • Schedule using calendering function in ETERNUSmgr
  • Support for Network Time Protocol (NTP) server
  • On demand (typically about 1-2 minutes)
  • external host access
  • internal access as target of REC/EC operations
  • If RAID group is activated, will return to ECO
    mode after period of no activity
  • default 30 minutes set from 10-60 minutes
  • If more than a set number incidences
    of on-demand spin-up in 24 hours, then ECO mode
    will be disabled for the remainder of the
    calendar day.
  • default 3 set from 1-5
  • Copy operations
  • OPC operations will not start if target inactive
  • ECO mode disabled during all copy sessions
  • Re-enabled for suspended EC/REC sessions 

9
Secure Information A Growing Demand
  • Can you achieve cost effective Information
    Security that protects information at rest
    without the cost of network disruptive appliances
    or application performance overhead
  • Will you realize easy to manage encryption for
    information security
  • Can you choose how to protect your information

Server
Application Layer Protect data from unauthorized
access
In-band Appliance
Network Layer Secure data movement
Storage System
Physical Layer Protect data physical information
from unauthorized drive removal
10
Disk Data Encryption
  • Simple, cost effective information security
  • Included in purchase price?
  • Is key management required?

Without Disk Data Encryption
Chain of custody
Data destruction
Maintenance
Transport
Regulation compliance overhead
User handling required
Process overhead
With Disk Data Encryption
Return failed drive No cost, no impact,
simplified management
11
Disk Data Encryption Detail
  • LUN level specification
  • Transparent to connected hosts
  • Algorithm
  • Advanced Encryption Standard (AES)
  • One time array specific 128-bit encryption key
  • Encrypted using internal master key (not
    disclosed by Fujitsu)
  • Stored in compact flash modules (2 per CM) and
    System Disks (mirrored pair per CM)
  • Encryption buffer area set at enablement
  • 5 of available cache (max 520MB)
  • Capability to encrypt existing data
  • No revert to unencrypt state allowed
  • On power loss, ALL dirty data in cache
    encrypted
  • LUN mobility operations maintain encryption
  • NOTE Fujitsu can provide an erasure utility that
    meets DoD specification 5220.22-M.

12
Other Data Protection Products
Fujitsu Mag EraSURE P2V - Commercial standards
Fujitsu Mag EraSURE P3M - DoD standards
  • Degaussers for fast and secure erasing of hard
    disk drives, removable disks and backup tapes.
  • Erases media by passing through a large magnetic
    field.
  • Purges recorded information on the unit,
    including servo, calibration data, and read/write
    heads.

Degausser Appliances
13
Storage Standards Organizations
  • Storage Performance Council (SPC)
  • Steering Committee Chairman C. Wilson
  • Storage Network Industry Association
  • Storage Management Initiative Specifications
    (SMI-S) provider
  • Storage Network Industry Association - Japan
  • Vice Chairman H. Yoshida
  • Technical Committee Chairman S. Iwatani
  • Fibre Channel Industry Association (
    www.fibrechannel.org )
  • ANSI INCITS T10 Technical Committee ( www.t10.org
    )
  • SCSI Storage Interfaces
  • ANSI INCITS T11 Technical Committee ( www.t11.org
    )
  • Device level Interfaces

14
Standards Based Benchmarking
  • Storage Performance Council ( http//www.storagepe
    rformance.org/home )
  • SPC Benchmark-1TM (SPC-1)
  • Application representation
  • OLTP system, Data Base system, Mail server
  • Characteristics
  • Multiple threaded workload
  • Predominantly random I/O, some sequential
  • Variety of blocksizes
  • Mix of read and write activity
  • SPC Benchmark-2TM (SPC-2)
  • Application representation
  • Large file processing (i.e. Scientific and
    Financial computing)
  • Large DB queries (i.e. Data Mining and Business
    Intelligence)
  • Video-on-demand
  • Characteristics
  • Large-scale sequential data movement
  • Multiple concurrent threads

15
SPC-1TM Performance
HDSUSP V
IBMDS8300 Turbo
ETERNUS8000Model 1100
115,090
ETERNUS6000Model 1100
Enterprise Storage
IBMDS8300
ETERNUS4000Model 500
60,004
IBMDS4800
ETERNUS3000Model 700
NetAppFAS3040
Mid-range Storage
EMC CLARiiONCX3 Model 40
50,000
100,000
200,000
150,000
250,000
300,000
SPC-1/IOPs
SPC-1 results as of Jan. 30, 2008.
16
SPC-2TM Performance
ETERNUS8000Model 1100
3,481
IBMDS8300
Enterprise Storage
ETERNUS6000Model 1100
ETERNUS4000Model 500
HP StorageWorks8000 EVA
Mid-range Storage
Sun StorEdge 3510 FC
2,000
4,000
6,000
Megabytes per Second (MB/s)
SPC-2 results as of Jan. 30, 2008.
17
Host Connectivity Trends
  • Direct Attached Storage (DAS)
  • Storage Area Network (SAN)
  • Fibre Channel (FC)
  • 4Gbps (current)
  • 8Gbps (future)
  • Network (Ethernet)  
  • iSCSI
  • 1Gbps (current)
  • 10Gbps (future)
  • Network Attached Storage (NAS)
  • Other
  • Serial Attached SCSI (SAS)
  • 3Gbps (current)
  • Economical (found in entry level solutions)
  • FC cable support longer distances than SAS
    connection cable.

18
Disaster Recovery for Business Continuity
  • Data Backup and Recovery
  • Mirroring
  • Remote vs. Local 
  • TCO (Total Cost of Ownership) / ROI (Return On
    Investment)
  • Economical
  • Performance
  • Security

19
Remote Replication over iSCSI
  • iSCSI based remote replication for economical
    mobility
  • Performance optimization
  • Data encryption
  • Rapid backup and restore times
  • Disk-disk backup and recovery
  • Disaster Recovery
  • Protect data and applications from disruptions
  • Minimize data loss
  • Rapid recovery
  • Affordable Data Migration
  • Migrate data across storage systems
  • Centralize data for backup operations

20
Problems When using Ethernet (TCP)
  • Throughput is gated by TCP Window Size

21
What is Gating the Throughput Performance
  • Sender has to keep the data in its buffer until
    it receives ACK from recipient for retransmission
    request
  • At the time the sender has filled up its buffer,
    it has to wait until ACK comes back before it can
    send the next data
  • If the buffer size is 16KB, and the distance is
    300 miles (RTT 20ms), then sender spends
    approx. 1.3ms to send 16KB of data and wait for
    approx. 19ms until ACK arrives

22
How to Accelerate
  • Use WAN Accelerator between storage system and
    WAN
  • WAN Accelerator acts as a speed matching buffer
  • WAN Accelerator immediately sends ACK back, so
    from storage system, it is same as communicating
    over LAN (short delay)

23
iSCSI with and without WAN Accelerator
  • iSCSI without WAN Accelerator (low throughput)
  • iSCSI with WAN Accelerator (high throughput)

24
Remote Replication over iSCSI
25
Enterprise-grade DR for Mid-range Budget
  • High ROI value that brings data mobility to
    mid-range customers and excellent value to
    enterprise customers

Does not include dual path replication for high
availability
Storage
Storage
WAN Accelerator
WAN Accelerator
FC-WAN
Encryption
FC-WAN
Encryption
Houston-Chicago 18,000/month (OC3)
26
Typical Replication Services
  • SnapShot
  • One Point Copy (OPC)
  • Snapshot (clone)
  • Immediate read write access to replica
  • QuickOPC
  • Snapshot (clone)
  • Track changes Refresh with changes only
  • SnapOPC
  • Snapshot (Copy-on-write)
  • Continuous Mirroring
  • Equivalent Copy (EC)
  • Read write access after Suspend
  • Resynch after Resume
  • Concurrent suspend of group
  • Remote Equivalent Copy (REC)
  • Synchronous Asynchronous modes
  • Over Fibre Channel or iSCSI
  • Update order guarantee capability
  • Other replication functions

Disaster Recovery
Rapid Backup Recovery
Data Migration
27
Virtualization Features
  • Dynamic Capacity Expansion
  • Concurrently add new disks, expanding RAID groups
    for new LUNs
  • Virtual LUNs
  • Concurrently Migrates logical volumes to another
    RAID group
  • LUN Concatenation
  • Improve capacity utilization by concatenating
    unused capacity to create a LUN

concatenation
  • Dynamic LUN Expansion
  • Increase LUN capacity without interruption to
    existing applications

700GB LUN
28
Virtual Storage System
ManagementServer
Application Server
ETERNUS SF AdvancedCopy
ETERNUS SF Storage Cruiser
Applications
Applications
Applications
Applications
Virtual Disk
Virtual storage pool
Virtualization Switch
Physical Diskon Storage systems
29
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