Transcript Access slides from UGC Nov 2013

Citrix Houston User Group
Lee Milam
[email protected]
Nov, 2013
Agenda
• Introductions
• Architecture.Next – XenDesktop 7
• Enterprise Support/Monitoring
• Storage Considerations
• NetApp Update
•Q &A
2
© 2012 Citrix Systems
• Share technical details of Citrix technology
• Show the product
• Increase awareness of features
• Foster community and sharing
• Have FUN
© 2012 Citrix Systems
Need to build a
Citrix Solution?
Http://Project.citrix.com
A Few Quick Announcements
• Latest Hypervisor Support – CTX131239, CTX136291
• Was that fixed? When? – CTX124164
• Key Troubleshooting tools? – CTX126294
• Secret Windows Updates – CTX129229
• XD 7 Upgrade Security – CTX139335
•XD 7.x Design Handbook – CTX139331
XenDesktop 7:
What you should know about FlexCast,
Prerequisites, and Migration
XenDesktop Roadmap
With an On-ramp for XenApp
Bruin
XenDesktop 7.1
Version
Upgrade
XenDesktop
5.6
2014
Excalibur
Merlin
XenDesktop 7
XenDesktop 7.x
“Merging Lane”
+Virtual
AppDNA
+App Orchestration
+TaaS
XenApp 6.5
XenApp 6.5
FP2
© 2012 Citrix Systems
Theme:
“XA feature parity”
“Avalon .3”
“Avalon .4”
Avalon
+Mobile
AppDNA
XenApp 6.5
FP3
End Mainstream
Maintenance Feb 2016
(+ 6 months)
New Platform, New Editions
XenDesktop 7
VDI
App
Enterprise
VDI only
© 2012 Citrix Systems
Enterprise
Platinum
Full FlexCast
Full FlexCast
and Cloud-Ready
Platinum
Server-based Apps
and Desktops
Unification
FlexCast Management Architecture
Receiver
Storefront
Web
Interface
Delivery
Services
Console
PCM
Console
IMA
Power
&Capacity
Mgmt
XenApp
Broker
IMA
XenApp
Workers
(RDS)
DB
PVS
XenApp Farm
PVS
Console
Studio
XenDesktop
Broker
CBP
WMI
Provisioning
Services
XenDesktop
Workers
(VDI)
XenDesktop Site
DB
FlexCast management architecture
Windows Apps and Desktops as Mobile Services
11
© 2012 Citrix Systems
XenDesktop 7: Supported Windows Platforms
• Controllers (think broker servers)
ᵒ Windows Server 2008 R2
ᵒ Windows Server 2012
• Workers (think VM’s or physical HDX hosts)
ᵒ Windows XP / Windows Vista
ᵒ Windows 7 / Windows 8
ᵒ Windows Server 2008 R2 /
Windows Server 2012
© 2012 Citrix | #CitrixSynergy
12
© 2012 Citrix Systems
Delivery controller requirements
Operating System
Windows Server 2012 or Windows Server 2008 R2
Disk Space
100MB
Additional Software
.NET 3.5 SP1 (Server 2008 R2 only)
.NET 4.0
ASP.NET 2.0
PowerShell 2.0 or 3.0 (Server 2008 R2 or 2012)
Visual C++ 2005, 2008 SP1, and 2010
Supported database platforms
SQL Server 2012 SP1
Express, Standard, and Enterprise editions
SQL Server 2008 R2 SP2
Express, Standard, Enterprise, and Datacenter
editions
• Databases are supported in standalone, clustered, and mirrored modes
(except the Express Edition, which supports only standalone mode)
• AlwaysOn Availability groups is supported for SQL Server 2012
• Windows authentication is required (SQL authentication is not used)
© 2012 Citrix Systems
Supported hypervisors
XenServer
6.2
6.1
6.0.2
Hyper-V/SCVMM
System Center Virtual Machine Manager 2012 Rollup 1
VMWare
vSphere 5.1 Update 1
(No support is provided for vSphere vCenter Linked Mode
operation)
vSphere 5.0 Update 2
vSphere 4.1 Update 3
New Features and Changes
For XenApp Customers: XenDesktop 7 Apps Edition
• Combined Infrastructure – FMA Architecture
• Windows Server 2012 Support
• System Center 2012 SP1 Support
App
Edition
Server-based Apps
and Desktops
• Machine Creation Services for Windows Server OS
• App-V 5 Integration
ᵒ XenApp Steaming is available for Windows 7 and Server 2008R2 only
ᵒ XenApp Streaming is accomplished by publishing RADERUN command in console
• Profile Management in Citrix Policies
• Universal Printer Server Integration
ᵒ Universal Printer Server
• Windows 2008 R2 SP1 Print Servers
• Windows 2008 32bit Print Servers
© 2012 Citrix Systems
Changes for XenApp customers
XenApp 6.5 (IMA)
XenDesktop 7 (FMA)
Single, global farm management
Project Merlin (mgmt & help desk)
Secure Gateway
Access Gateway VPX or appliance
IMA-shadowing
Director + MS RemoteAssistance
AppStreaming
App-V 5 support, and
AppStreaming via “raderun” for WS08R2 and Win7
Web Interface
StoreFront, Receiver for Web
SmartAuditor
Citrix Ready partner, like: Observe-IT
© 2012 Citrix Systems
Getting to
XenDesktop 7
Upgrade in place, or build new?
Making the move:
Migration paths from existing deployments
Current Product
Path Available
XenDesktop 5.x
In-place upgrade
XenDesktop 4.x
Migration tool
XenApp 6.5
New deployment
XenApp 6.0
New deployment
XenApp 5.x & earlier
New deployment
Meta-Installer
One disk/iso to
install all XD7
components
New Environment Installation: Process Flowchart
For current XenApp customers migrating to XenDesktop 7
Step 1
Install the
controller,
Studio, license
server and
database
Step 3
Install the
Virtual
Delivery
Agents
Step 2
Install and
configure
Director
Step 5
Publish
Desktop
Groups/Applic
ations
Step 4
Use PVS or
MCS to create
catalogs
Step 6
Install and
configure
StoreFront
and Receiver
In Place Upgrade: Process Flowchart
For current XenDesktop 5.x customers migrating to XenDesktop 7
Step 1
Install and
configure
StoreFront
and Receiver
Step 3
Upgrade
Provisioning
Servers
(if applicable)
Step 2
Upgrade the
License Server
Step 5
Upgrade ONE
Delivery
Controller
then backup
database
Step 4
Upgrade
Virtual
Delivery and
PVS Agents
Step 7
Upgrade
remaining
Controllers
and register in
Studio
Step 6
Run Studio,
follow
“upgrade site
database”
dialog
Problem statement
• No direct in-place upgrade to
XenDesktop 7 from
XenDesktop 4.x
• Database and architecture changes
• Operating system requirements are different
• Environments need to be setup from scratch
which can result in a considerable amount of
time (especially for larger enterprise
environments)
© 2012 Citrix Systems
Migration Tool Highlights
• Provides the ability to export settings
from a legacy XenDesktop 4.x farm and
import them into a XenDesktop 7 site
• Consists of two components
• Export Tool – Executable used to write the legacy farm
settings to an XML file
• Import Tool – PowerShell script used to import the
settings from the XML file
• Shipped with XenDesktop 7
© 2012 Citrix Systems
What settings can we migrate?
• Desktop Groups (icons are not exported)
• Desktops
• Machines
• Pool management pools
• Farm settings
• Policies (including session printers)
• User assignments
• Hypervisor settings (connection credentials are not exported)
© 2012 Citrix Systems
What settings will export but not migrate?
• Administrators
• Licensing configuration
• Delivery group folders
(don’t exist in XenDesktop 7)
• Registry keys
(vary in XenDesktop 7)
© 2012 Citrix Systems
What settings can’t we export or migrate?
• Provisioning Services data
• Applications
• List of Desktop Delivery Controllers
• Web Interface configuration
• AD OU configuration
• PortICAConfig XML file
• Configuration logs
© 2012 Citrix Systems
Final thoughts
• StoreFront is a MUST, and it is the starting point
• License Server upgrade is a MUST, and you will likely need to
obtain a new license file from Citrix (to verify/update your SA)
• Once on XD7 future upgrades should be much easier than the
IMA days of XenApp
• Even if you can upgrade XenDesktop 5.x in place, it might be
better to simply build a new environment in parallel
© 2012 Citrix Systems
Sources for more information
• Citrix Desktop Transformation Accelerator
• Will be updated soon with XenDesktop 7 best practices
• Validated designs
• Watch for these coming soon from Citrix and Cisco
• Citrix eDocs
• http://support.citrix.com/proddocs/topic/xendesktop-7/cds-xd-upgrade-procedure.html
© 2012 Citrix Systems
Edgesight/Director
How support is done
Next generation Director
• Single pane of glass
ᵒ Instant “real-time” troubleshooting and
environment health metrics across sites
• Integration of EdgeSight features
TM
ᵒ Performance management and network analysis
• Aggregation of logging information
ᵒ Pinpoints root cause of connection and machine
failures
• End user experience monitoring
ᵒ Logon analysis to pinpoint issues or delays
© 2012 Citrix Systems
Evolution of EdgeSight
TM
• Driving Evolution
ᵒ EdgeSight evolves into an integrated solution
ᵒ Enhances existing products such as Director
• Providing a holistic view
ᵒ No more product silos
ᵒ Offers comprehensive view into the Citrix stack
to correlate information
© 2012 Citrix Systems
TM
EdgeSight features
Performance management
Health and capacity assurance
Historical trending
Network analysis
Identify bottlenecks due to the network in your
XenDesktop environment
Powered by NetScaler HDX Insight
© 2012 Citrix Systems
XenDesktop 7
Single Site
Director
Help Desk and Troubleshooting / Environment health
Site A
Director 2.1
© 2012 Citrix Systems
Site B
Site C
XenDesktop 7
TM
Director
Director
and EdgeSight TM
Historical Trends and Analytics
Managing and optimizing capacity
EdgeSightTM Performance management
Site A
© 2012 Citrix Systems
Site B
Site C
XenDesktop 7
Director and EdgeSight TM
HDX Insight
Isolating and managing network performance
EdgeSight TM Network analysis
Site A
Site B
Network - Deep Packet Analysis
© 2012 Citrix Systems
Site C
HDX Insight
Powered by Citrix Netscaler Insight Center
Insight
© 2012 Citrix Systems
I was inundated with data. Chart after chart
after chart was pouring in until all I was seeing
was a blur of lines and hazy circles consuming
endless expanse of the screen. I needed a
break from the brutal monotony of cubical life.
The thought reminded me of my father taking
us camping in the forest where we could sit
and hear nothing for else but our thoughts. The
break would cut through whatever fog our
heads were in. Alas, the thought of that
freedom was just that and the harsh reality was
that this stack of dead trees needed to be in a
report by tomorrow with insightful commentary.
A visit to the coffee machine was due and then
it was right to work. I wish I had the right set of
tools for this job…
NetScaler Is the Universal Front-End
BYO
Desktops
Mobility
SaaS Apps
Availability
© 2012 Citrix Systems
Acceleration Security
Visibility
Corporate Apps
Data
Achieving Application Visibility with
NetScaler
3rd Party
Analysis Tools
NetScaler Insight
Center
Cloud
Enterprise
Combining NetScaler with Analysis Tools
NetScaler generates a wealth of application visibility data by way of AppFlow™
NetScaler Insight Center is the best way to view Citrix-specific data
© 2012 Citrix Systems
Desktop
Introducing NetScaler Insight Center
HDX
Insight
Analytics for XenApp and XenDesktop
Web
Insight
Analytics for enterprise applications
NetScaler Insight Center
© 2012 Citrix Systems
HDX
Insight
Analytics for XenApp and XenDesktop
• Gain visibility into end user experience for virtual
desktops, applications, and users for XenDesktop
• Correlate network data with application data with
real-time metrics for effective troubleshooting
• Integrated with XenDesktop management tools
NetScaler Insight Center
AppFlow
© 2012 Citrix Systems
Web
Insight
Analytics for Enterprise Applications
•
Break down detailed reporting on enterprise application
use, even for SSL encrypted traffic
•
Correlate network metrics with application behavior
•
Determine end user experience without agents
NetScaler Insight Center
AppFlow
© 2012 Citrix Systems
NetScaler Insight Center Packaging
• Software download from
http://www.citrix.com/downloads/netscaleradc/components.html
App Flow
• Works on XenServer
• Enterprise or Platinum Edition
• Seamless integration with NetScaler Appliances
NetScaler Insight Center
(XenServer VM)
© 2012 Citrix Systems
• NetScaler Insight Center replaces Edgesight for
NetScaler
© 2012 Citrix Systems
Storage Improvements
Wrangling those images
MCS in XenDesktop 7
ᵒ New Hypervisor feature support
ᵒ New VM creation process
© 2012 Citrix Systems
Hypervisor Improvements
• Hyper-V
ᵒ
ᵒ
ᵒ
ᵒ
SCVMM 2012 SP1 and Hyper-V3 (Server 2012) now supported
SMB 3 support
VHDX support
CSV Read Cache
• XenServer
ᵒ XenServer 6.2 support
ᵒ Clone on Boot separated from intelli-cache feature
• Clone On Boot now supported on all types of storage
• XD does not have to delete the Difference disks when cleaning VMs
• ESX
ᵒ Lowest supported version v5 (dropped support for all v4.x versions)
ᵒ Added support for v5.1
ᵒ Uses DiskManager (required 5.0 API) operations removes need to create temporary VMs and operates a bit faster
• Copy Disk (used when multiple storage locations)
• Delete Disk
• Note: Consolidate still uses temp VMs to operate
© 2012 Citrix Systems
MCS Behavior Changes
• Server OS support
ᵒ Provides RDS/ multi-session worker support
• Image Prep
ᵒ Auto DHCP feature
ᵒ Auto KMS support
ᵒ PVD Inventory automation
• Storage superseding
ᵒ When you add more storage at the Host level of Studio
• You can unselect existing storage so it is not used for any NEW catalogs
• Multi-Nic support
• XD 7 feature integration
ᵒ Delegated Admin support
ᵒ Configuration Logging Support
© 2012 Citrix Systems
Machine Creation Services (MCS)
Hypervisor
Master
VM
A
A’
B
B
B
B
Image Prep
Phase
(Sandboxed
VM)
Master
VM
Image
A
diff disk
identity
A’
Storage
Copy
© 2012 Citrix Systems
Storage Superseding
© 2012 Citrix Systems
Where is my PVS?
• PVS is not going away
• Continuing to be improved
• Still considered the primary and optimal solution for large deployments
• Download is under
ᵒ the XenDesktop 7 ‘Additional Components’ section
ᵒ The XenApp 7 FP2 downloads
© 2012 Citrix Systems
Introduction
New features, improved features
• Server 2012 / Win 8 Support
• System Center 2012 SP1 Support (VMM and CM)
• Vastly improved XenDesktop Setup Wizard
• SSO - automatic synthetic NIC switch-over on Hyper-V
• Improved Virtual Target Device control
• CDF Trace implementation
• Cache in memory then Disk
59
© 2012 Citrix Systems
New PVS Wizard
New XenDesktop Wizard Only supports XenDesktop 7
© 2012 Citrix Systems
Boot Device Manager (BDM) instead of PXE
© 2012 Citrix Systems
XenDesktop Setup Wizard
Provisioning optimization: VM disks
• Create write-cache disks in place on
destination storage
• Size is now configurable
• Each VM booted once to quick
format
• No more SLOW network copies of ‘n’
formatted write cache disks!
© 2012 Citrix Systems
Synthetic ‘NIC’ Switch-Over - SSO
• Automatic switch-over from legacy
NIC to synthetic NIC on Hyper-V
• Greatly improved streaming
performance compared to legacy
• Template setup
ᵒ NIC1 – legacy on streaming network
ᵒ NIC2 – synthetic on streaming network
ᵒ (optional) >= NIC3 cloned as is with
network assignments untouched
© 2012 Citrix Systems
CDF Trace implementation
Logging is now available through Citrix standard CDF Control modules
© 2012 Citrix Systems
Microsoft licensing key considerations
• Deployed using either Key Management Server (KMS) or Microsoft Multiple
Activation Key (MAK) volume licensing keys:
ᵒ
ᵒ
ᵒ
ᵒ
Windows 7
Windows 8
Windows Server 2008 R2
Windows Server 2012
• Windows Office 2010 and Office 2013 are deployed using KMS licensing
© 2012 Citrix Systems
Citrix on NetApp
Cluster ONTAP
Cedric Courteix – NetApp Technical Alliance Mgr.
November 2013
Agenda
 Storage sizing
 NetApp Best Practice and Design Update
 Integrations and Flash
 Summary and Resources
NetApp Solution for Citrix
Desktop and App Virtualization
Data Sharing
Cloud Orchestration
Virtual Storage Console
for vSphere and XenServer
Recovery Manager 1.1 for ShareFile
Virtual Storage Console
for CloudStack (beta)
Server Optimization
Unified storage for all data types and any device
Key Industry Trends
 User Workspace Virtualization – OS, Apps, and Data unified
access across any device
–
Citrix ShareFile & XenMobile
 More apps moving to the Cloud (SaaS/DaaS) & getting
Mobile Ready
–
SAP building thin client software
–
DaaS solutions gaining traction esp. in Latin America and APAC
 Expanded use cases including graphics & media rich apps
–
nVidia GPU offload to virtualize rich media and high end apps
Storage Sizing
Correct Storage Sizing Process
Assessment w/
Liquidware
Labs
Customer requirements
• # of desktops
• Capacity
• Memory Size
• Perf Requirements
• Read/write ratio
• Random vs seq.
Storage Sizing
NetApp SPM
Hosted Shared Desktop SPM
Sample Storage Configurations
Small (800 users)
Medium (2000 users)
Large (4000 users)
 FAS2240-2 w/ 24
internal 600GB 10K
RPM disks
 $35/desktop
 Whitepaper
Assumptions for all these configs:
 FAS3250 w/ (3)
DS2246 shelves;
600GB drives @10K
RPM; Flash Cache
 FAS6290 w/ (5)
DS2246 shelves;
600GB drives @10K
RPM; Flash Cache
• 13 IOPS per desktop; 80% writes
• 8GB unique data per VM
Storage Sizing Best Practice: Use NetApp SPM Sizer
Storage Design and
Best Practicise
74
Backup and DR
Apps
Virtualization
Profile
Management
User Data
Management
Hypervisor Clones
NetApp Flash Optimized Architecture
SSD
Backup
DR
 Flash optimized storage
 Integrated data protection
Data management complexity
Storage
tools
Manage and monitor
Simplify thethe
Architecture
Simplifying
Storage Requirements
Storage complexity
 Embedded management
75
NetApp-Citrix Architecture for XenDesktop
VM
XenDesktop
Win 7/ Windows Server OS
Base image
vDisk
Write Cache
User Installed
Apps
Corporate
Apps
Profile /
Folders
Personal
vDisks
Application
Virtualization
CIFS
Home Dir.
User Data
Scaling UPM and Folder Redirection
 UPM and Folder Redirection Easily Scale to 50K+ users
Group Policy
 All the config data for UPM lives as GPOs in AD
 AD and GPOs scale well, so we are good there
 All user data is simply stored in CIFS shares
User Data
 Properly configured CIFS scales well, too
 We simply add additional CIFS shares as required
 Using Group Policy, Group Membership and variables,
we can simply spread users across multiple CIFS shares
NetApp-Citrix Architecture for XenDesktop
VM
XenDesktop
Win 7/ Windows Server OS
Base image
vDisk
Write
Cache
User Installed
Apps
Personal
vDisks
Corporate
Apps
Profile/
Folders
Application
Virtualization
CIFS
Home Dir.
User Data
Hypervisor
NetApp Clustered Data ONTAP
VMDK/
VHD
CIFS/Blocks
NFS/Blocks
Virtual Storage
Console (VSC) To
Create Volumes
VMDK/
VHD
NFS/Blocks
CIFS
CIFS
vDisk and Clustered Data ONTAP Node
Failover
SMB 2.1
SMB 3.0
Multi-Pathing
SAN LUN
Resilience
No
Yes
Yes
Simplicity
Yes
Yes
No
CIFS SMB 3 is the winner!
NetApp-Citrix Architecture for XenDesktop
Desktop
Director
VM
XenDesktop
Win 7/ Windows Server OS
Base image
vDisk
User Installed
Apps
Write
Cache
Personal
vDisks
Profile/
Folders
Application
Virtualization
CIFS
Home Dir.
User Data
VSC
Hypervisor
OnCommand
Balance
Corporate
Apps
NetApp Clustered Data ONTAP
VMDK/
VHD
CIFS/Blocks
NFS/Blocks
VMDK/
VHD
NFS/Blocks
CIFS
Dedupe aware NetApp snapshots
CIFS
Citrix
CloudBridge
NetApp
SnapMirror
DR Site
Solution Integrations
81
Integrated Storage Management
NetApp VSC for XenServer simplifies virtual infrastructure admin activities
XenServer
Citrix XenCenter
+
NetApp VSC
Desktop Admin
 Provisioning
 Deduplication
 Cloning
Storage Admin
 Role-based delegation
Storage Pool
82
Recovery Manager 1.1 for ShareFile
Storage Center Server (Windows IIS)




cDOT 8.2 support
Parallel file restores
High availability for NRM-CS
Demo on YouTube
NRM-CS
CIFS
New
ShareFile
Data
SharePoint
CIFS
shares
SnapVault
WAN
Snapshots
SnapMirror
17
Optimizing Performance Together
NetApp Technology
Capabilities
Data ONTAP WAFL
 Performance enhancement built into Write Anywhere file layout
 Optimizes write I/O
Flash Cache
 Controller-based; accelerates random read operations
 Intelligently caches “hot” data to Flash
 Helps on boot and login storms and steady state
Flash Pool
 Implemented at disk shelf; combines SSD and HDD
into a single aggregate
 Intelligently (automatically) caches “hot” data blocks on SSD
 Accelerates random read and overwrites
HDD
EF 540
 Pure SSD
 SAN protocol
 Low Latency
 For IOPS > 20
Citrix Provisioning
Services (PVS)
 Streams single shared desktop image to create
many virtual desktops
 Built-in host side read caching
NetApp Flash Recommendations for VDI
 Lead with FAS w/ Flash
Cache or Flash Pool for
typical task workers and
knowledge users
– Typically <20 IOPS per user
Announcing partnership with
Atlantis Computing to more cost
efficiently enable VDI for power
users (typically 20+ IOPS; low
latency)
– Any capacity requirement
 Developers
 Position EF for low latency
use cases
 FAS required for CIFS user
data and profiles
 High graphics & CAD users
 Healthcare PACS
EF with Atlantis
Architecture Whitepaper
www.atlantiscomputing.com/netappefra
EF All Flash Array with Atlantis ILIO
Atlantis ILIO
Persistent
VDI 4.1
Application
Analysis
IO
Processing
Inline
De-duplication
2000 Persistent Desktops
with 2U All Flash Storage &
Host side IO optimization s/w
Compression
vSphere 5.1
Scale tested
LoginVSI & Atlantis Load Gen.
Tool
Hypervisor
Hosts
50+ IOPS & 30GB per desktop;
<2ms storage latency
even with
single storage controller
NetApp EF 540 All Flash Array
w/ 12 x 800GB SSDs
Technical whitepaper available here
Results: LoginVSI Heavy (1000
Users) with total 100 IOPS per User
Acceptable User
Experience
Good
Very
Good
Excellent
User
experience
3x Faster Response Time
Excellent User Experience
Scales without degrading
performance
Wrap-up
88
Resources
 XenDesktop on NetApp Solution Guide
 XenDesktop with PVS and NetApp Clone on XS and
vSphere
 XenDesktop with MCS on XS and vSphere
 XenDesktop with Hyper-V
 XenApp
 ShareFile Solution Guide
Key Takeaways
1
Storage Sizing
2
Design, Best Practice and Reference
Architecture
3
Integrations and Flash
Blog http://cedrixcafe.com
Twitter #CCOURTEIX
[email protected]
91
General Q & A
You have Questions?
• What Kind of coat can only be put on wet?
• What jumps when it walks and sits when it stands?
• I fly, yet I have no wings. I cry, yet I have no eyes. Darkness follows me; lower light I never see?
• Until I am measured, I am not known. Yet how you miss me, When I have flown! What am I?
• I run over fields and woods all day. Under the bed at night I sit not alone. My tongue hangs out, up
and to the rear, awaiting to be filled in the morning. What am I?
• What has hands but can not clap?
• What goes up but never comes down?
• Two bodies have I, though both joined in one. The more still I stand, the quicker I run. What am I?
We Have Answers?
• What Kind of coat can only be put on wet? -Paint
• What jumps when it walks and sits when it stands? -Kangaroo
• I fly, yet I have no wings. I cry, yet I have no eyes. Darkness follows me; lower light I never see? Clouds
• Until I am measured, I am not known. Yet how you miss me, When I have flown! What am I? -Time
• I run over fields and woods all day. Under the bed at night I sit not alone. My tongue hangs out, up
and to the rear, awaiting to be filled in the morning. What am I? -Shoe
• What has hands but can not clap? -Clock
• What goes up but never comes down? –Your Age
• Two bodies have I, though both joined in one. The more still I stand, the quicker I run. What am I? Hourglass
We Have Answers.
Work better. Live better.