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Archived Sun Storage Articles
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14 Jul 2008
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A Hands on Introduction to ZFS Pools (II) [20244]
Mirrors, Disk Failures and Spare Disks
Part II of "A Hands on Introduction to ZFS Pools" deals with Mirrors, Disk Failures and Spare Disks. It continues the limited-resources approach to the subject begun in Part i, which dealt with creating pools [20243]. Readers will learn in Part II how to create a mirror in ZFS; how to expand it; and how to replace broken components.
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14 Jul 2008
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Automatic Data Migration (ADM) with ZFS [20253]
OpenSolaris HSM for Solaris File Systems, Including ZFS
ADM, Automatic Data Migration, is an OpenSolaris HSM (hierarchical Storage Management) system for Solaris file systems. With ADM, files can be moved to archive storage (disk or tape) to free up space on primary devices. ADM will recall data from the archive storage when needed. The process of capturing, releasing and recalling data to/from archive storage is based on policies set by the administrator derived from file characteristics.
ADM is being built initially for ZFS to provide many of the functional characteristics of SAM-QFS.
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14 Jul 2008
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Storage J4200, J4400 and J4500 Arrays [20289]
Key Features
The open Sun storage J4000 array family combines high performance hardware and open source software. The J4000 family supports Solaris, Red Hat, Linux, Suse Linux, and Windows.
- Sun Storage J4200 array - 2 RUs, up to 12 disks - low entry point
- Sun Storage J4400 array - 4 RUs, up to 24 disks - best price performance
- Sun Storage J4500 array - 4 RUs, up to 48 SATA disks - high density
Learn about the rest of the features.
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14 Jul 2008
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Open Storage Adoption [20141]
Open Storage Increases with Volume of Data
In the past storage was closed, very proprietary, not to mention very expensive. With today’s rapid growth in volume of data, expanding companies need affordable, scalable storage options. That’s where Sun believes open storage will come in. Supporting innovation and marketing choice, Sun has opened the storage market using industry leading server and operating system technologies.
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07 Jul 2008
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Sun StorageTek 1U Autoloader with LTO3 and LTO 4 Half Height SAS [20267]
A Tape Backup System For the Cost and Space Conscious Consumer
With the Sun Storage Tek OEM 1U Autoloader’s up to 12.8 TB of backup available its 2:1 Compression makes a small footprint for very high capacity. Also the need for IT resources can be cut, due to web based remote management feature.
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07 Jul 2008
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16GB High Density Cache Memory Modules [20268]
Boost Sun StorageTek ST9990V and ST9985V Storage Systems
Sun has released the 16GB High Density Cache Memory Modules for Sun StorageTek ST9990V and ST9985V storage systems that utilize higher density memory chips maximizing Cache Memory. With this increase, systems can be sized to support greater workloads.
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07 Jul 2008
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1TB 7200RPM Low Cost Fibre Channel Hard Disk Drive [20272]
Low Cost Efficiency Where It Is Needed When Archiving
Now available from Sun is a 1TB 7200 RPM Fibre Channel Hard Disk Drive (HDD) priced lower than expected. It is compatible with the StorageTek ST9990V and ST9985V storage systems. The new Fiber Channel HDD can be applied to your system to add capacity for applications requiring optimized reads for large files.
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07 Jul 2008
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Sun StorageTek Dual 4Gb FC Dual GbE ExpressModule HBA [20151]
Network and FC in sing;e HBA for Sun Blade Servers
Each blade in a Sun Blade 6000 or Sun Blade has two dedicated PCI Express Modules.
The blade servers allow for additional I/O with 2 or 4 PCI Express Network Express Modules per chassis.
By combining two FC and two GbE onto a single ExpressModule HBA, Sun offers customers more flexibility and expandability.
This HBA is full duplex. With 4 lanes at 2.5Gbps, the max throughput 800 MB/sec half duplex, 1600MB/sec full duplex.
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07 Jul 2008
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Sun StorageTek T9840D tape drive [20206]
change title, add subtitle
Sun offers the 5th generation T9840D tape drive in the
L700e, L1400, SL3000, and SL8500 tape libraries. The T9840D has the ability to read legacy T9840A, B, and C written media. The T9840D can also write on write on the old media in the new format.
At At Glance
- Fourth-generation tape drive using same media greatly reduces TCO
- Available with FICON, ESCON, and Fibre Channel interfaces
- Uses encryption technology to secure data onsite, offsite, and in transit
- Moves data at 30 MB/sec
- Stores up to 75 GB on a single cartridge
- Accesses data in 16.5 seconds
- Fast, cost-effective alternative to disk
The T9840D tape drive can be used in both Open Systems and Mainframe environments.
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03 Jul 2008
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Can Flash Memory Become the Foundation for a New Tier in the Storage Hierarchy? [20231]
An ACM Article by Adam Leventhal
(Small image shows, on a logarithmic scale, the access time and cost per gigabyte for DRAM, Flash and a 15K disk. See the ACM article for details.)
Adam address the question "Can flash memory become the foundation for a new tier in the storage hierarchy?" by exploring the capabilities of Flash memory, the challenges of existing disks, Log Devices and Read Caches. Adam says, "it's possible to build a flash-based device that can service write operations very quickly by inserting a DRAM
write cache and then treating that write cache as nonvolatile by adding a
supercapacitor to provide the necessary power to flush outstanding data in the
DRAM to flash in the case of power loss."
Flash is suitable to be a second level adaptive replacement cache (ARC)- L2ARC in ZFS terms. A small server with room for 128Gb of DRAMs can easily accommodate 768GB or more using flash SSDs in its internal drive bays. The L2ARC can help take full advantage of the flash SSDs.
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