http://blogs.netapp.com/crewe_oncommand/2011/05/guest-post-what-is-the-cloud.html

http://blogs.technet.com/b/andrew/archive/2011/05/18/virtualising-sql-server-a-second-opinion.aspx

2621 The Secret to a Successful Cloud – People!

This covers a bit more detail in Cloud architectures. Everyone can now give you the dictionary term for what a “Cloud” is, but I still think very few people are helping you translate that into how to actual put together your own Cloud. It isn’t about software, or services, it’s about people and procedures. You can have a fully functional Cloud environment very easily if you sit down and work out what you want to achieve and what processes/procedures need to be put in place. I’ll be talking a little about frameworks and continual service improvement models as well as IT maturity. The key takeaway is that you and your colleagues are the key to you successfully deploying a Cloud infrastructure!

2141 Future vAdmins

This follows on from a successful topic I covered at the last Northern UK VMUG which covered some of the skills required to be a successful vAdmin and where the industry is taking us. It’s been easy to get by in IT over the past 5-10 years with a small subset of skills, but with virtualisation you need a much wider remit. As a VCDX I know this all too well!!! I’ll cover some key industry certifications, how this can benefit your employer, and some key complimentary areas such as soft skills (which I think are hugely important).

2142 Questions to Ask Your Design Authority

Virtualisation is easy, follow the basic install guides, install some VMs and you have an environment! All good, right? So why do some people have more success in virtualization that others? How do some people get 10:1 vCPU:pCPU ratios and others struggle to get 2:1? I’ll go over some of the concepts that are essential to an effective virtualisation strategy. This also includes a Cloud infrastructure as many of the design principles are the same and it is all the same journey.

http://www.vmworld.com/cfp.jspa or just vmworld.com and hit “Vote Now” on the right hand side.

You’ll need a VMworld account, but this only takes 5 minutes to setup and then you can keep up to speed with all the new stuff going on. Then just hit the thumbs up next to my sessions!

I’d also recommend the following sessions (it’s a long list, I’ve probably still missed some good sessions!). These are a mix of topics that inspire me, friends who I know are great presenters, or people I’ve seen run sessions before who always do good sessions. It’s a long list, but hopefully it’ll help you start choosing the sessions you interested in. I’d strongly recommend still looking through the full list however!

Many thanks in advance, and regardless if I’m speaking at VMworld this year, I hope to see you all there!!!

Not usually the most reliable source of technical data, but I’ll quote Wikipedia to help explain atomicity to set the stage. Taken from http://en.wikipedia.org/wiki/RAID under the section of “Problems with RAID”…

This is a little understood and rarely mentioned failure mode for redundant storage systems that do not utilize transactional features. Database researcher Jim Gray wrote “Update in Place is a Poison Apple”^[28] during the early days of relational database commercialization. However, this warning largely went unheeded and fell by the wayside upon the advent of RAID, which many software engineers mistook as solving all data storage integrity and reliability problems. Many software programs update a storage object “in-place”; that is, they write a new version of the object on to the same disk addresses as the old version of the object. While the software may also log some delta information elsewhere, it expects the storage to present “atomic write semantics,” meaning that the write of the data either occurred in its entirety or did not occur at all.

This has come back into light recently but under a different guise with SSD write failure problems. Many SSD manufacturers and enterprise storage vendors are addressing this with new firmware that writes all data sequentially, never over-writing a data block until all of the disk has been written then starting over-writing blocks from the start (that have obviously been freed up first).

However this is an overlooked issue with traditional spinning media and is often overlooked and dismissed without a clear explanation or understanding. The idea is that many systems will over-write data in place, the write is confirmed that it was successfully written, but not necessarily that the data matched what the host sent. The overhead of this check would put a considerable extra load as every write would need an additional read and checksum before the write is confirmed and the write cache can be flushed.

This can be compounded by so called “Copy on Write” snapshot technologies. Rather than preserving the data that has already been written to a particular sector on disk, the original data is copied to a snapshot area in a different part of the storage system before the original data sector is overwritten. So a high transaction application that overwrites its data regularly (say a temp DB or replay logs that get flushed regularly, like Oracle logs before archiving) could be quite susceptible to this sort of error. The main issue here is that once the data is written and confirmed, there’s no way of correcting it as the storage system will confirm it as intact. This can have a massive knock on effect to data de-duplication. If the initial block is written to a corrupt sector without being identified, this could then be linked to hundred of other data blocks as part of the de-duplication process, causing massive data corruption.

This can’t always be fixed by RAID parity as RAID is calculated after a stripe is written. It can’t always be calculated in memory either as a full stripe isn’t always written, it could be a partial stripe in which case the parity has to be calculated from existing data on disk as well as data not yet written to disk. If the data is written to disk and then read in order to calculate parity, it is not necessarily confirmed against the source. There are several ways to address this, and mostly this needs to happen in memory, generally a checksum is considered the acceptable approach. Reading the data later after a confirmed write cannot be guaranteed as you have nothing to compare it against, the integrity needs to be checked while the data is still active in memory to compare against.

There are several ways that storage vendors tackle this, and as you would expect I’ll cover what NetApp do. The WAFL file system writes to every free data block and never actively over-writes a data block. To create free data blocks there is a scrub process that runs in the background, this runs the entire storage system block by block and interrogates whether a snapshot or active filesystem is pointing at this particular data block. If it is not, then it clears the data in the block and marks it as free (or unmarks it as in-use would probably be more correct). This allows the filesystem to confirm that not only is the data block not in use, but actually as a side effect it spreads data writes across the entire surface area of a disk and negates or minimises the effects of atomicity.  Additionally the WAFL scrub process tests the data blocks to check for disk integrity, this is how disks can be pre-failed on the basis of disk surface integrity rather than physical failure, after a defined threshold of failed disk sectors the disk is failed and a recovery is attempted and a hot spare activated. So in a NetApp system, the same data blocks are rarely written to repeatedly, even (or especially) in a high repeat transaction system.

Take all of the above, and you also start to realise that a full filesystem is bad for your storage in different ways. If you have a full storage system, then there are less free blocks to write to, and so a smaller portion of data blocks are written to continuously. This compounds the chances of atomicity and in general will increase the disk wear. So a good reason to look at data archiving, de-duplication and generally keeping your file systems clean and not abusing the storage systems!

So please ask your storage vendor how they protect your data against these issues.

So the Northern England VMUG has been announced and all confirmed, and I’m happy to confirm that I will be attending, and I will be presenting, twice! Very much looking forward to this, last one clashed selfishly with NetApp Insight so I couldn’t make it, but I’m definitely looking forward to this event. It looks like it could be the biggest to date, although these are growing in popularity each time one comes around, so no big surprise there! Here is the email regarding the event, please sign up and come down, I’ll be happy to take questions and conversations outside of the sessions and I’m planning on being around all day for it. Many thanks once again to Brendon Higgins for organising a very comprehensive event that promises to have something for everything. Additionally huge thanks to all the other guys presenting, I just hope there aren’t too many great presentations that clash with my own, not as they’ll steal my audience, but as I won’t be able to watch! Finally a big thanks to all the corporate sponsors, without whom these events would never be as successful or lavishly hosted, including my own employer B2net (unfortunately I think that means I can’t win an iPad ).

The Northern England VMUG has just opened the online registration for the next event on the 5th April 2011.  The Leeds Marriott Hotel, [4 Trevelyan Square, Boar Lane, Leeds, LS1 6ET United Kingdom] will host our 4th event.  This is the groups 2nd year and we have planed and even bigger event which will run 9 am to 5 pm with the usual post event drinks.  It is still possible to attend only the afternoon session if required and the keynote address will be at 1 pm.

In response to the feedback from the November 2011 event, we have included Microsoft and Citrix technology, increased the sponsors in the market area, added more ‘sales’ type presentations, along side the normal customer case studies, best practice and technical deep dives.  Please keep a close eye on the groups website for more details as to presentation content as it comes available.  We will also have lunch for the guests between noon and 1 pm.

Not enough reason to attend?  – How about the chance to win an iPad 2!  Yes we will be giving away a brand new iPad2 on the day.  {If we can not get hold of the device due to sock issues, do not worry we will post it to you as soon as the mythical device becomes available in the UK}

Please register via the groups website - http://www.vmug.org.uk/

Also see the following link for additional details – http://communities.netapp.com/people/BrendonHiggins/blog/2011/03/30/virtual-machine-user-group-vmug–leeds-5th-april-2011

Presentations – Correct as of  11/03/2011

• Paul Brown, IT Director at Cordant Group PLC with a customer’s case study into laptop level 1 hypervisors
• Alan Renouf, VIRTU-AL blog, special interest group and workshop on PowerCLI and automation scripts
• Andrew Fryer, Microsoft’s IT Pro Evangelist with public cloud and our vision of the IT Professional’s role as adoption of the cloud increases
• Mike Laverick, RTFM Education blog with Future of VMware SRM
• Chris Kranz, Senior Consulting Architect at B2net Ltd with the required skills of future admins and why VCDX is the current gold standard
• Ricky El-Qasem, Private Cloud expert and Director of Global Education Services at Veeam software with how to Save & Optimise wasted virtual storage for FREE
  VMware – VMware Zimbra is an enterprise-class, open source email, calendar and collaboration platform.
• EMC – Why EMC is the leader in storage, disk-based backup and security
• Microsoft – Building the bridge to cloud computing
• B2net – Technical deep dive, Tier 1 applications {Exchange, SQL, Sharepoint} – Advanced theory and design best practices
• Virtual DCS – Cloud Computing Services and Cloud Hosting
• Veeam –Backup & Recovery
• Riverbed – Branch office WAN
• CommVault – Backup & Recovery
• Vision Solutions – Virtualisation and DR: while business continuity overall has benefited from virtualisation, disaster recovery has bred some more challenges for businesses
• 10Zig – VDI hardware
• Virtual Sharp – Data centre failover and monitoring
• Quest – Customer’s case study
• vKernel – Capacity management

Look forward to seeing you on the day.

Brendon Higgins
VMUG chair

As with most of my thoughts, it started with an innocent customer query. EMC have some very cool inbuilt tools for doing seamless CIFS data migration, but NetApp don’t. It’s something that often causes a fair amount of problems and some careful planning with NetApp as we don’t have this. But I was thinking today, we kinda do, I just don’t think we leverage the tools available properly.

Enter widelinks. Here is an excerpt from a NetApp KB article on the topic (KB 3011420)…

A symbolic link is a special file created by NFS clients that points to another file or directory. Widelink entries are a way to redirect absolute symbolic links on the filer. They allow the symbolic link destination to be a share on the same filer or on another filer. The following examples illustrate how to create a symlink from volume to qtree on the same filer, and from volume to volume on different filers.

What does this mean and why will my life be easier after reading the rest of this article?

So if I have a nice shiny new NetApp filer (or an old one I haven’t got round to migrating my CIFS data onto yet), and I have my old CIFS file server that is rapidly approaching failure or out of support. I can create my new file and share structure on my NetApp, and then use widelinks to redirect the user to the CIFS file server while I worry about all the data copy out of hours without having the ball-ache of copying all my data all at once.

First of all let me highly recommend that if you aren’t using DFS, start using it. You’re going to have to repoint your users to a new share name anyway, so you might as well do it properly. Setup a basic DFS root and repoint all your users to this. Why? Because next time you come round to reconfiguring or upgrading your CIFS share infrastructure you won’t have to touch your users, just repoint DFS one night.

So widelinks expands on symlinks. Don’t get too excited because at the moment “mklink” from Windows 7/2008 isn’t the same thing, and it won’t work on NetApp shares. Symbolic links in this article are a *NIX thing, but the concept is similar to Windows symbolic links. If you don’t know symbolic links, think of them as shortcuts, they simply redirect you to another location without actually redirecting you. What widelinks will do is translate this symbolic link and bridge the gap to the remote location.

Okay, enough theory, onto the practice…

My setup is quite simple. I have a NetApp simulator running as a cluster, I have a NAS box that has some home media, I have a MBA to do some of the UNIX stuff I need (sorry, I tried to get round this, but a Linux/UNIX box is needed for now). Filer1 is my new system that I want all my users to use. Filer2 (with a folder called test2) and my NAS box (with movies) are legacy systems I’m looking to replace (bit of role-play).

First of all my CIFS share on the new system is created. We need to make sure this has “widelinks” enabled, so the command line is as follows…

cifs shares -add /vol/test1 test1 -widelink

If you already have your shares setup, no problem…

cifs shares -change <share_name> -widelink

If you query the cifs shares, you should get output similar to below…

node1*> cifs shares

Name Mount Point Description

- – - – - – - – - – - – - – -

test1 /vol/test1

. . . widelinks supported

everyone / Full Control

I can see that widelinks is enabled for my share. I need to export this as NFS to my MBA so I can create the symbolic link. Before you ask, I tried both Adam Fox‘s “ntap_symlink” and Oliver Krause’s “ln”, but these didn’t do what I wanted (ln just crashes on Win7). I’m not sure if you can mount the target for the symbolic links as anything other than NFS, but it can certainly map to file systems that aren’t just NFS, I have done this also with an external CIFS share.

exportfs -io root=<unix_hostname> /vol/test1

From my MBA I can then mount this up and create some symbolic links. (I already have my NAS mounted)

mount filer1:/vol/test1 /mnt/test1

mount filer2:/vol/test2 /mnt/test2

cd /mnt/test1

ln -s /mnt/test2/test2 test2

ln -s /Volumes/movies movies

If you “ls –lah” the folder you’ll see the symlinks created and it should show the mappings. Job done for my MBA, back to Windows and the NetApp (phew you sigh).

We need to create a translations file for the symlinks. Basically this reads the symbolic link that we created on our UNIX host and converts this to a DFS style link to redirect the data path. So make sure you noted the paths you used on your UNIX host for the mappings! The “*” in the paths are useful as you can include many different symbolic links here and they will all be matched and followed.

wrfile /etc/symlink.translations

widelink /mnt/test2/* \\filer2\test2\*

widelink /Volumes/movies/* \\NAS\movies\*

CTRL+C

This file is re-read every 30 seconds, so patience, go get a glass of water. Go back to the test1 CIFS share and you should see some magic! (test1 already exists as new data).

More magic is shown when you right click one of these folders and go to the DFS tab. (you’ll also see a DFS tab on folders that aren’t widelinks, but you’ll notice the referral list is just the normal share).

Additionally you’ll notice that if you go to the “test2″ folder you’ll see all its contents without you being actually redirected to this other host.

Now we have the challenge of data migration. The advantage (and major problem) of widelinks is that they appear and feel to a Windows user as data on the share they are looking at. So users can’t edit the symbolic link, or over-write the data (which is probably a good thing). If they copy over the folder, it’ll attempt to update the target (in our case, the legacy systems). But as administrator you have the same constraints. So what do I do???

Unfortunately this is where the cool stuff things break apart a little. What I need to do is remove the symbolic link, remove the entry in “/etc/symlink.translations” and then copy my data across to fill the space. When doing this make sure to make the old data unavailable (change the share permissions is safest and simplest) as the symbolic links can be a little sticky and you don’t want users writing to 2 locations. I had some odd results with this on my Windows 7 desktop as it seemed to cache the widelink, but mapping the drive from a different machine worked fine. I guess you’ll want all clients offline when you do data copies.

Now wouldn’t it be cool if widelinks could be some way integrated into the OSSV mechanism? In case you don’t know, OSSV can do file copies from a Windows host onto the NetApp into qtrees. This would make a very nice migration tool!

Please NetApp consider the following improvements to widelinks:

• Allow me to create symbolic links from Windows (mklink) – this is a must have! All users out there, log a support call regarding this, the more people request it, the quicker they’ll do it!
• Give me a mechanism to integrate this with OSSV (I know I’m asking a lot)
• Once you’ve integrated OSSV into this, give me a mechanism to transparently remove the widelinks once my data has copied across. This surely isn’t asking the impossible as ndmp copies dump the inodes and ACLs last and that’s what needs to be achieved here.
• A GUI to manage my widelinks and symbolic links. I toyed with the idea of creating a PowerShell to manage this, but the issues of creating symbolic links aren’t easily achieved on Windows.

Special thanks to Adam Fox as a few of his topics on the communities pointed me in the right direction. Useful references included below:

http://communities.netapp.com/thread/3752

http://communities.netapp.com/message/24227

http://communities.netapp.com/message/31156

https://kb.netapp.com/support/index?page=content&actp=LIST&id=1011758

https://kb.netapp.com/support/index?page=content&actp=LIST&id=1011091

https://kb.netapp.com/support/index?page=content&id=3011420

I’m building this on my home desktop PC running a clean Windows XP virtual machine. I read up on dependencies of dotNET, so although it’s updated, I put off installing all dotNET patches. I regularly snapshot this at various stages of application builds to allow me to go back, add updates and rebuild applications as appropriate. Hasn’t come to that yet, but I feel it’s a good practice!

Microsoft Office 2010 is a bit of a challenge still. It looks like this is due to the new way Microsoft handle the licensing of the product, even if you want to run a personal edition and authenticate online. This has forced me to still use 2007, which isn’t so bad as it’s less of a resource hog and so lightens the load on my NetBook. It’s a shame there isn’t a single Office package that includes Visio, OneNote and Project, so I have to package it 3 times, no biggie.

I made the mistake (I think) of installing Office, and packaging that up, then installing Visio and packaging that up separately. I think I’ve introduced an odd dependency between the 2 packages now as it runs fine on my vanilla NetBook, but trying to run Visio on my desktop now fails with an error. Something I need to investigate. Apparently “The operation system is not presently configured to run this application”.

I get a similar issue with Outlook, I can’t right click and send-to-email or email from within other applications (even Word which is packaged with Outlook). I’m sure there’s a fix to this, but it’s on my list to investigate.

I’ve packaged up MindJet and Skype and these seem to work nicely. Skype is nice as it’s no longer infused into my operating system and every application, so I can just run it when I want, so it’s not grinding on my NetBook. This is one of the other reasons for wanting to encapsulate my applications, it means I can keep a level of isolation from my laptop and if I don’t want an application to run in the background, it doesn’t have to.

Maybe I need to look at the way I package these in a little more detail, perhaps I’m missing some simple steps. But these are my comments, and my mistakes, hopefully you can learn from them!

 I am a design architect as my day job, so this exam should be pretty complimentary to what I do. Going through the study material in the blueprint was an experience all by itself. I downloaded around 130 papers, probably over 5000 pages in total. I don’t believe there is any easy way to study for this exam if you are not already doing this role. From the experience of doing the exam, 95% of the questions I answered based on experience (or guessing), and 5% was thanks to studying before the exam. I have to say the VMworld 2010 material has been very useful, and the session by Chad Sakac and Vaughn Stewart helped me through at least 1 question!

If you want to transition into a design role, then the blueprint is essential reading to get you focused and get an idea of what you’ll be doing. I think a lot of people would benefit from the study material of this exam. A course that covers all the topics would be essential (the current Design Workshop course is not quite detailed enough).

So my experiences of the actual exam, I actually think it is a huge improvement on the previous Design exam I sat last year. The interface is much more slick and most things are quite easy to understand. The “Visio” type interfaces are actually pretty neat, and although I highly recommend VMware introduce an “Are you sure” button on “Reset”, I think the interface works quite well. Some questions lack space to put detail in them, but I think they accommodate by putting less detail in the questions, and simply asking more questions to get more detail! I think this works quite well. A couple of drag-and-drop style questions had snap issues where numbers and items would simply disappear or snap to the wrong section, but reset fixed the missing items, and repeated dragging fixed the others. This was only really frustrating due to the number of questions and the time limit. I did manage to finish all the questions, but I did rush and it was down to the wire on the last question. Usually I finish exams with plenty to spare (simply because I’m terrible at checking my answers). The one point is that I hope in the final exam VMware introduce the ability to review questions and go back!

Overall I think this exam is really good. It tested my knowledge a lot, and I definitely relied on experience more than anything, and I think that’s really what this exam is all about. A good design architect is someone with knowledge and experience (in my humble opinion). I definitely see this in the day job too as customers like to test you and ask very obscure and awkward questions, these stick in your head and help you learn more than any study guide.

A few people have started putting together study guides, and I can’t fault the content of these at all. For the less experienced these are vital, and I would also highly recommend the Design Workshop (almost essential I’d say). If you are a VMware Partner, I’d also check the “Plan & Design” Services Kits that are available (go to content, search for “Plan & Design”, specifically the vSphere one). For people planning to go through to the VCDX, I think the study material for this exam is absolutely essential, and the Design Workshop will help you put together a framework for your documentation for the design submission.

Exam results take 6-8 weeks, so I reckon I have another 1-3 weeks to wait, and I will update when I know. If I fail I’m really not sure what I’ll do as I have no idea how to study properly for this exam! It’s like the Chinese proverb, you can’t fill a full cup. I already know this stuff, so I’m not sure how I can study for it again as I don’t know which areas I’m weak on! Fingers crossed then!

However I also think this period is one of the more difficult times to take this exam. Why?  When I sat my EA exam last year it was focused around ESX and vCenter. There was no additional software to worry about, no fancy features, you just needed to know the ESX CLI pretty well. Seeing how the ESX Service Console is Linux based, and I have spent a lot of time with Linux, this wasn’t a major challenge (although I did do a lot of studying anyway!).

The VCAP-DCA sits at a frustrating time as we have to know 2 products quite well; we need to know both ESX and ESXi. Sure the differences aren’t much as we focus on doing things the “right” way (that is, vMA, PowerCLI, Orchestrator, etc. etc.), but some stuff is applicable only to ESX (firewalling as a single example), and other stuff is applicable only to ESXi (lockdown mode as a single example). The next release from VMware will be a bonus as it’s back to one core product that we need knowledge of. Additionally a lot of the really good deep-dive documentation and blogs you find out there are from admins and engineers that get down and dirty with the Service Console, and many haven’t yet been updated the details for ESXi (some you simply can’t do in ESXi). So I’m trying to achieve the same things I used to achieve with ESX by learning this almost from scratch again. If I enable tech-support mode and jump into BusyBox, is this an okay practice in the exam? It might not include ESXi hosts at all! Certainly some scenarios would negate the ability to use the BusyBox, but I guess so long as I can get the job done, it shouldn’t matter!

Additionally there are several tools to do the same job. I can pretty much interchange vMA, PowerCLI,  Tech-Support Mode for many troubleshooting tasks (admittedly not all), and I can also use Orchestrator for some other tasks, but the blueprint describes me needing to know all of these. Do I just take my pick and make sure I know one of these well, or do I need to know a little about all of these tools? Jack of all toolkits, master of none!

Anyway, I wanted to vent my thoughts as I’m having a 5 minute break from study and wanted to share a little of my frustrations. Fingers crossed for tomorrow!

If you find this post and are looking for some guidance on what has helped me revise for the VCAP-DCA, here you go…

• http://kendrickcoleman.com/index.php?/Tech-Blog/vcap-datacenter-administration-exam-landing-page-vdca410.html (lots of useful links coming off this page)
• http://communities.vmware.com/community/vmtn/certedu/certification/vcap
• http://www.vexperienced.co.uk/
• http://geeksilver.wordpress.com/
• http://www.vfail.net/
• http://www.yellow-bricks.com/

Print off the exam blueprint, cross off everything you think you already know and concentrate on the stuff you don’t first. I found this the best way to kick off revision as the number of topics is pretty overwhelming. Once you have all these new topics, start going over other areas, you’ll be surprised how much you learn about topics you already know!

Get yourself a home-lab. You don’t need an server or host that’ll run ESX / ESXi natively, just invest in a decent desktop and run everything from Workstation. You’ll find this much more functional for future work as you can reprovision and file away VMs very easily. Having said that I come from a storage background, so physical storage concepts aren’t something I need to focus on too much. Building an FC lab is going to be tricky, but NFS/iSCSI is pretty easy with things like OpenFiler. I run the ONTAP simulator, but I guess you could also use the Celerra simulator, or LeftHand or other. MPIO concepts aren’t that different between iSCSI and FCP, the rest can be learnt (for the most part) from text books.

In October, a team of 21 very mixed ability runners from B2net will be participating in the Royal Parks Half Marathon, London. I will be one of the “very” mixed ability runners along with my fiancé. I have never run a half marathon before, and despite doing a fair amount of training, a previous slipped disc injury means I will be taking the run fairly easy. I’m not entirely sure what I’ve let myself in for! 

We are raising money for CLEFT, a fairly new charity which is focused on research into the causes of cleft lip and palates and post-operative care and support. 

Cleft lip and palates can cause huge distress to patients and those who care for them and the charity aims to fund projects that improve techniques in alleviating and reducing suffering.  The charity raises money to fund projects at home and abroad, with varied objectives such as research into how and why clefts occur, how it affects speech and growth and purchasing essential medical equipment.

Please support our efforts by making a donation, large or small, at our JustGiving page http://www.justgiving.com/kranz; it’s secure and very easy to use.

To find out more about how your donation will help CLEFT please visit http://www.cleft.org.uk/your_donations.html

Thanks in advance from the B2net Royal Parks Team.

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