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h3. Recent Storage Papers

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h3. SDN Program News Weblog

h6. *[*Please check out xVM Documentation on OpenSolaris Site!*|http://blogs.sun.com/SDNProgramNews/entry/xvm_documentation_on_opensolaris_site]*

h3. The Solid State Storage Revolution

h6. *[*Andy Bechtolsheim speaks at SNIA SDC, Sept 2008.*|http://blogs.sun.com/storage/entry/the_solid_state_storage_revolution]*

h3. Storage Related Blogs

*[*Monitoring ZFS Statistic*|http://blogs.sun.com/pomah/entry/monitoring_zfs_statistic]*

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by Roman Ivanov
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By combining two great tools arcstat and dimstat you can get ZFS statistics in:
*table view
*chart view
*any date/time interval
*host to host compare

*[*When disaster hits - DR, VMware and Sun Storage Arrays*|http://blogs.sun.com/saidsyedblog/entry/when_disaster_hits_dr_vmware]*

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by Said Syed
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VMware has obviously revolutionized the concept of Disaster Recovery by introducing Site Recovery Manager earlier this year.

SRM takes advantage of a storage array's remote replication capabilities to replicate Virtual Machine data necessary to bring up a Virtual Machine at the DR site without having to create and install a new OS and applications.

*[*Recipe for a ZFS RAID-Z Storage Pool on Sun Fire X4540*|http://blogs.sun.com/timthomas/en_GB/entry/recipe_for_a_zfs_raid]*

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by Tim Thomas
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Almost year ago I posted a *[Recipe for Sun Fire X4500 RAID-Z Config with Hot Spares|http://blogs.sun.com/timthomas/en_GB/entry/sun_fire_x4500_raid_z]*. Now we have the SunFire X4540 with the same number of disks but a different controller layout and more bootable disk slots, so I have revisited this.


*[*Sun Fire X4540 Disk Planner*|http://blogs.sun.com/timthomas/en_GB/entry/sun_fire_x4540_disk_planner]*

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by Tim Thomas
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The SunFire X4500 (commonly known as Thumper) got a facelift a few months ago and the new version is the SunFire X4540. The X4540 has to a large degree been re-architected, and has new CPUs, more memory and a new I/O subsystem. There are still 48 disks, but the controller numbering is different and we now have four bootable disk slots vs only two in the X4500.

Now, I need to draw a picture when planning ZFS storage pools with so many disks so I just uploaded my SunFire X4540 disk planner in PDF and OpenOffice formats. There is no rocket science here, it just helps you draw a picture, but I find it useful. It is an update of a similar *[doc I created for the X4500|http://blogs.sun.com/timthomas/en_GB/entry/sun_fire_x4500_disk_planner]*.


*[*Storage Cloud Computing*|http://blogs.sun.com/fifors/entry/storage_cloud_computing]*

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by Peter Buckingham
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I'd been working on this blog entry for a while, but it seems that *[*Jonathan*|http://blogs.sun.com/jonathan/entry/xvm1]* beat me to the publish button. He is covering something more XvM specific, I've included what I was working on below just for some comparison...

We hear a lot about "Cloud computing" all over the place. Often it's used to refer to to web 2.0 type resources that are out there. Things like Amazon S3 or Google's multitude of applications. What I'd like to discuss today is some thoughts I've got around how a storage "cloud" would look like inside a data center. What are the interesting pieces to the problem?

* Horizontal Scalability
* Managability
* Reliability

*[*ZFS the second level ARC (L2ARC)*|http://blogs.sun.com/brendan/entry/test]*

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by Brendan Gregg
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An exciting new ZFS feature has now become publicly known - the second level ARC, or L2ARC. This post will show a quick example and answer some basic questions.
The "ARC" is the ZFS main memory cache (in DRAM), which can be accessed with sub microsecond latency. An ARC read miss would normally read from disk, at millisecond latency (especially random reads). The L2ARC sits in-between, extending the main memory cache using fast storage devices - such as flash memory based SSDs (solid state disks).

*[*Hybrid Storage Pools*|http://blogs.sun.com/ahl/entry/hybrid_storage_pools_the_l2arc]*

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by Adam Leventhal
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Adam is writing about building a hybrid storage pool with both disk and flash which results in improving system performance, cost ... and pretty much every axis of importance.

*[*Saving and Restoring ZFS Snapshots to and from Amazon S3*|http://blogs.sun.com/ec2/entry/zfs_snapshots_to_and_from]*

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by Sean O'Dell
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We can use ZFS snapshots to save and restore filesystems from one Solaris EC2 instance to another. This functionality is very useful, for example, for saving user home directories, web server documents, MySQL databases, etc., terminating a EC2 instance, and then restoring these filesystems on a new EC2 instance created at a later date.

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!Main^community.gif|align=center!
* [*Lustre Community*|http://wiki.lustre.org/index.php/Main_Page]
* [*Sun's Open Storage Community*|http://www.sun.com/storage/openstorage/community.jsp]
* [*BigAdmin Storage Resource Collection*|http://www.sun.com/bigadmin/collections/storage.html]
* [*OpenSolaris Community: Storage*|http://opensolaris.org/os/community/storage/]
* [*OpenSolaris Community: ZFS*|http://opensolaris.org/os/community/zfs/]
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h3. Storage Blueprints
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h3. Other Technical Papers
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