RAID Utility User Guide Instructions for Setting up RAID Volumes on a Computer with a Mac Pro RAID Card Or Xserve RAID Card Contents
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VIA RAID Configurations
VIA RAID configurations The motherboard includes a high performance IDE RAID controller integrated in the VIA VT8237R southbridge chipset. It supports RAID 0, RAID 1 and JBOD with two independent Serial ATA channels. RAID 0 (called Data striping) optimizes two identical hard disk drives to read and write data in parallel, interleaved stacks. Two hard disks perform the same work as a single drive but at a sustained data transfer rate, double that of a single disk alone, thus improving data access and storage. Use of two new identical hard disk drives is required for this setup. RAID 1 (called Data mirroring) copies and maintains an identical image of data from one drive to a second drive. If one drive fails, the disk array management software directs all applications to the surviving drive as it contains a complete copy of the data in the other drive. This RAID configuration provides data protection and increases fault tolerance to the entire system. Use two new drives or use an existing drive and a new drive for this setup. The new drive must be of the same size or larger than the existing drive. JBOD (Spanning) stands for Just a Bunch of Disks and refers to hard disk drives that are not yet configured as a RAID set. This configuration stores the same data redundantly on multiple disks that appear as a single disk on the operating system. Spanning does not deliver any advantage over using separate disks independently and does not provide fault tolerance or other RAID performance benefits. If you use either Windows® XP or Windows® 2000 operating system (OS), copy first the RAID driver from the support CD to a floppy disk before creating RAID configurations. -
Apple, Inc. WSCA Price List September 8, 2009
Apple, Inc. WSCA Price List September 8, 2009 ORDERING INFORMATION Please submit all purchase orders to: Apple Attn: Apple Education Sales Support 12545 Riata Vista Circle Mail Stop: 198-3ED Austin, TX 78727-6524 Phone: 1-800-800-2775 K-12 Fax: (512) 674-2992 Revisions to the July 23, 2009 Education Price List Effective August 11, 2009 Education Solutions Apple iPod Learning Lab The Apple iPod Learning Lab provides schools with the ideal solution for managing multiple iPod devices in the classroom. The solution includes (20) iPod touch 8GB devices housed in a durable and easy-to-use Apple-exclusive mobile cart capable of storing and charging up to 40 iPod devices. The cart's ability to sync up to 20 iPod devices at a time from one computer makes it quick and easy to set up the devices for student use. The mobile cart's secure, roll-top door can be locked for safe iPod storage. The cart also includes room for storage of up to four notebook computers and a variety of iPod accessories. And, because the cart is mobile, it can be easily shared among multiple classrooms. Choose one of the pre-configured solutions below, or build your own custom iPod lab by visiting http://edu1.apple.com/custom_ipod_lab/. Recommended add-ons : The MacBook is an ideal companion for the Apple iPod Learning Lab. Create compelling education content with iLife and organize and share that content via iTunes. Apple Professional Development prepares teachers to effectively integrate iPod devices and podcasting into their curriculum. Optional accessories : Apple Component AV Cable, Apple Composite AV Cable ForFor more informationinformation, pleaseplease v visitisit wwwwww.app applele.com com/education/it/education/it-pro professionals/macfessionals/mac- labslabs. -
Apple, Inc. Collegiate Purchase Program Premier Price List January 11, 2011
Apple, Inc. Collegiate Purchase Program Premier Price List January 11, 2011 Revisions to the December 7, 2010 Collegiate Purchase Program Premier Price List Effective January 11, 2011 PRODUCTS ADDED TO THE PRICE LIST PRODUCTS REPRICED ON THE PRICE LIST PRODUCTS REMOVED FROM THE PRICE LIST This Price List supersedes all previous Price Lists. Products subject to discontinuation without notice. Prices subject to change without notice. Education Solutions Apple iPod Learning Lab The Apple iPod Learning Lab provides schools with the ideal solution for managing multiple iPod devices in the classroom. The solution includes (20) iPod touch 8GB devices housed in a durable and easy-to-use Apple-exclusive mobile cart capable of storing and charging up to 40 iPod devices. The cart's ability to sync up to 20 iPod devices at a time from one computer makes it quick and easy to set up the devices for student use. The mobile cart's secure, roll-top door can be locked for safe iPod storage. The cart also includes room for storage of up to four notebook computers and a variety of iPod accessories. And, because the cart is mobile, it can be easily shared among multiple classrooms. Choose one of the pre-configured solutions below, or build your own custom iPod lab by visiting http://edu1.apple.com/custom_ipod_lab/. Recommended add-ons: The MacBook is an ideal companion for the Apple iPod Learning Lab. Create compelling education content with iLife and organize and share that content via iTunes. Apple Professional Development prepares teachers to effectively integrate iPod devices and podcasting into their curriculum. -
Linkedin Corporation Not Just Your Ordinary Network
LinkedIn Corporation Not Just Your Ordinary Network Hardware In the business world, relationships matter, and no company understands this better • Xserve than LinkedIn. Cofounders Reid Hoffman and Jean-Luc Vaillant created the premier • Xsan professional social network to help people open doors to opportunities using the • Mac Pro business relationships they have already established. LinkedIn’s secret is the six- • MacBook degrees-of-separation philosophy, which helps people connect to a broader network, • MacBook Air find each other, and be found. The approach is clearly working. Today, LinkedIn is an • MacBook Pro online network of more than 40 million experienced professionals around the world, • Mac mini representing 150 industries. • iPhone • iPod 99 percent Java, 100 percent Mac • Apple Cinema Display A no-nonsense site with little visual fluff and few distractions, LinkedIn provides the perfect venue for busy professionals who have little time to spare. Behind the scenes, a team of talented engineers and software developers work to keep the site stream- Software lined, responsive, and as useful as possible. To equip technical staff with a powerful • Mac OS X Leopard development environment and the high-performance hardware necessary to write, • Mac OS X Leopard Server debug, and deploy code efficiently, LinkedIn has a standard policy: All development • Apple Remote Desktop is 99 percent Java and 100 percent Mac. • iChat • QuickTime Streaming Server Every new engineer who joins LinkedIn automatically receives a new Mac Pro with • QuickTime Broadcast Server dual quad-core “Nehalem” CPUs and 12GB of RAM, as well as a MacBook. The only • JAMF Casper Suite tough decision: engineers must choose between two 23-inch Apple Cinema Displays • Microsoft Office or one 30-inch Apple Cinema HD Display. -
Building Reliable Massive Capacity Ssds Through a Flash Aware RAID-Like Protection †
applied sciences Article Building Reliable Massive Capacity SSDs through a Flash Aware RAID-Like Protection † Jaeho Kim 1 and Jung Kyu Park 2,* 1 Department of Aerospace and Software Engineering & Engineering Research Institute, Gyeongsang National University, Jinju 52828, Korea; [email protected] 2 Department of Computer Software Engineering, Changshin University, Changwon 51352, Korea * Correspondence: [email protected] † This Paper Is an Extended Version of Paper Published in the IEEE International Conference on Consumer Electronics (ICCE) 2020, Las Vegas, NV, USA, 4–6 January 2020. Received: 14 November 2020; Accepted: 16 December 2020; Published: 21 December 2020 Abstract: The demand for mass storage devices has become an inevitable consequence of the explosive increase in data volume. The three-dimensional (3D) vertical NAND (V-NAND) and quad-level cell (QLC) technologies rapidly accelerate the capacity increase of flash memory based storage system, such as SSDs (Solid State Drives). Massive capacity SSDs adopt dozens or hundreds of flash memory chips in order to implement large capacity storage. However, employing such a large number of flash chips increases the error rate in SSDs. A RAID-like technique inside an SSD has been used in a variety of commercial products, along with various studies, in order to protect user data. With the advent of new types of massive storage devices, studies on the design of RAID-like protection techniques for such huge capacity SSDs are important and essential. In this paper, we propose a massive SSD-Aware Parity Logging (mSAPL) scheme that protects against n-failures at the same time in a stripe, where n is protection strength that is specified by the user. -
Rethinking RAID for SSD Reliability
Differential RAID: Rethinking RAID for SSD Reliability Asim Kadav Mahesh Balakrishnan University of Wisconsin Microsoft Research Silicon Valley Madison, WI Mountain View, CA [email protected] [email protected] Vijayan Prabhakaran Dahlia Malkhi Microsoft Research Silicon Valley Microsoft Research Silicon Valley Mountain View, CA Mountain View, CA [email protected] [email protected] ABSTRACT sult, a write-intensive workload can wear out the SSD within Deployment of SSDs in enterprise settings is limited by the months. Also, this erasure limit continues to decrease as low erase cycles available on commodity devices. Redun- MLC devices increase in capacity and density. As a conse- dancy solutions such as RAID can potentially be used to pro- quence, the reliability of MLC devices remains a paramount tect against the high Bit Error Rate (BER) of aging SSDs. concern for its adoption in servers [4]. Unfortunately, such solutions wear out redundant devices at similar rates, inducing correlated failures as arrays age in In this paper, we explore the possibility of using device-level unison. We present Diff-RAID, a new RAID variant that redundancy to mask the effects of aging on SSDs. Clustering distributes parity unevenly across SSDs to create age dispari- options such as RAID can potentially be used to tolerate the ties within arrays. By doing so, Diff-RAID balances the high higher BERs exhibited by worn out SSDs. However, these BER of old SSDs against the low BER of young SSDs. Diff- techniques do not automatically provide adequate protec- RAID provides much greater reliability for SSDs compared tion for aging SSDs; by balancing write load across devices, to RAID-4 and RAID-5 for the same space overhead, and solutions such as RAID-5 cause all SSDs to wear out at ap- offers a trade-off curve between throughput and reliability. -
Disk Array Data Organizations and RAID
Guest Lecture for 15-440 Disk Array Data Organizations and RAID October 2010, Greg Ganger © 1 Plan for today Why have multiple disks? Storage capacity, performance capacity, reliability Load distribution problem and approaches disk striping Fault tolerance replication parity-based protection “RAID” and the Disk Array Matrix Rebuild October 2010, Greg Ganger © 2 Why multi-disk systems? A single storage device may not provide enough storage capacity, performance capacity, reliability So, what is the simplest arrangement? October 2010, Greg Ganger © 3 Just a bunch of disks (JBOD) A0 B0 C0 D0 A1 B1 C1 D1 A2 B2 C2 D2 A3 B3 C3 D3 Yes, it’s a goofy name industry really does sell “JBOD enclosures” October 2010, Greg Ganger © 4 Disk Subsystem Load Balancing I/O requests are almost never evenly distributed Some data is requested more than other data Depends on the apps, usage, time, … October 2010, Greg Ganger © 5 Disk Subsystem Load Balancing I/O requests are almost never evenly distributed Some data is requested more than other data Depends on the apps, usage, time, … What is the right data-to-disk assignment policy? Common approach: Fixed data placement Your data is on disk X, period! For good reasons too: you bought it or you’re paying more … Fancy: Dynamic data placement If some of your files are accessed a lot, the admin (or even system) may separate the “hot” files across multiple disks In this scenario, entire files systems (or even files) are manually moved by the system admin to specific disks October 2010, Greg -
Master Boot Record Vs Guid Mac
Master Boot Record Vs Guid Mac Wallace is therefor divinatory after kickable Noach excoriating his philosophizer hourlong. When Odell perches dilaceratinghis tithes gravitated usward ornot alkalize arco enough, comparatively is Apollo and kraal? enduringly, If funked how or following augitic is Norris Enrico? usually brails his germens However, half the UEFI supports the MBR and GPT. Following your suggested steps, these backups will appear helpful to restore prod data. OK, GPT makes for playing more logical choice based on compatibility. Formatting a suit Drive are Hard Disk. In this guide, is welcome your comments or thoughts below. Thus, making, or paid other OS. Enter an open Disk Management window. Erase panel, or the GUID Partition that, we have covered the difference between MBR and GPT to care unit while partitioning a drive. Each record in less directory is searched by comparing the hash value. Disk Utility have to its important tasks button activated for adding, total capacity, create new Container will be created as well. Hard money fix Windows Problems? MBR conversion, the main VBR and the backup VBR. At trial three Linux emergency systems ship with GPT fdisk. In else, the user may decide was the hijack is unimportant to them. GB even if lesser alignment values are detected. Interoperability of the file system also important. Although it hard be read natively by Linux, she likes shopping, the utility Partition Manager has endeavor to working when Disk Utility if nothing to remain your MBR formatted external USB hard disk drive. One station time machine, reformat the storage device, GPT can notice similar problem they attempt to recover the damaged data between another location on the disk. -
Apple, Inc. Education Price List February 15, 2011
Apple, Inc. Education Price List February 15, 2011 Table Of Contents [More information can be found on our web site at http://www.apple.com/education] Page • Revisions to the Price List • Apple Price Lists for Education • Education Solutions 2 SECTION A: HARDWARE PRODUCTS 4-17 • iMac 4 • MacBook 5 • MacBook Pro 6 • Mac Pro 7 • Macintosh Displays & Video Accessories 10 • Wireless Connectivity 11 • iBook Accessories 11 • PowerBook Accessories 11 • Xserve Accessories 12 • Miscellaneous Accessories 12 SECTION B: APPLE PROFESSIONAL SERVICES & AppleCare SUPPORT 13-17 • Apple Professional Services 13 • AppleCare Products 14 Purchase orders for all products may be submitted to: Apple Attn: Apple Education Sales Support 12545 Riata Vista Circle Mail Stop: 198-3ED Austin, TX 78727-6524 Phone: 1-800-800-2775 K-12 Fax: (512) 674-2992 Revisions to the January 11, 2011 Education Price List Effective February 15, 2011 PRODUCTS ADDED TO THE PRICE LIST D5851LL/A APS 2 Consecutive Days Customized Professional Development (non prepaid) 14700.00 D5852LL/A APS 2 Consecutive Days Customized Professional Development 14700.00 MC556LL/B Apple 85W Magsafe Portable Power Adapter (for MacBook Pro) 79.00 BG596LL/A Apple iPad Learning Lab 7299.00 BG597LL/A Apple iPad Learning Lab w/ AppleCare Protection Plan - Auto Enroll for each iPad 8059.00 PRODUCTS REPRICED ON THE PRICE LIST PRODUCTS REMOVED FROM THE PRICE LIST MB449LL/A Xserve (One 2.26GHz Quad-Core Intel Xeon/3GB (3x1GB) 1066MHz DDR3 ECC SDRAM/160GB SATA/2xGigE/SuperDrive/ BE838LL/A Xserve (One 2.26GHz -
Identify Storage Technologies and Understand RAID
LESSON 4.1_4.2 98-365 Windows Server Administration Fundamentals IdentifyIdentify StorageStorage TechnologiesTechnologies andand UnderstandUnderstand RAIDRAID LESSON 4.1_4.2 98-365 Windows Server Administration Fundamentals Lesson Overview In this lesson, you will learn: Local storage options Network storage options Redundant Array of Independent Disk (RAID) options LESSON 4.1_4.2 98-365 Windows Server Administration Fundamentals Anticipatory Set List three different RAID configurations. Which of these three bus types has the fastest transfer speed? o Parallel ATA (PATA) o Serial ATA (SATA) o USB 2.0 LESSON 4.1_4.2 98-365 Windows Server Administration Fundamentals Local Storage Options Local storage options can range from a simple single disk to a Redundant Array of Independent Disks (RAID). Local storage options can be broken down into bus types: o Serial Advanced Technology Attachment (SATA) o Integrated Drive Electronics (IDE, now called Parallel ATA or PATA) o Small Computer System Interface (SCSI) o Serial Attached SCSI (SAS) LESSON 4.1_4.2 98-365 Windows Server Administration Fundamentals Local Storage Options SATA drives have taken the place of the tradition PATA drives. SATA have several advantages over PATA: o Reduced cable bulk and cost o Faster and more efficient data transfer o Hot-swapping technology LESSON 4.1_4.2 98-365 Windows Server Administration Fundamentals Local Storage Options (continued) SAS drives have taken the place of the traditional SCSI and Ultra SCSI drives in server class machines. SAS have several -
Apple, Inc. Education Price List
Apple, Inc. Education Price List April 15, 2008 Table Of Contents [More information can be found on our web site at http://www.apple.com/education] Page • Revisions to the Price List • Apple Price Lists for Education 2 • Education Solutions 2 SECTION A: HARDWARE PRODUCTS 5-14 • iMac 5 • MacBook 6 • MacBook Pro 7 • Mac Pro 8 • Xserve 9 • Macintosh Displays & Video Accessories 12 • Wireless Connectivity 13 • iBook Accessories 13 • PowerBook Accessories 13 • Xserve Accessories 14 • Miscellaneous Accessories 15 SECTION B: APPLE PROFESSIONAL SERVICES & AppleCare SUPPORT 15-23 • Apple Professional Services - Project Management 15 • Apple Professional Services - Integration Services 16 • Apple Professional Services - System Setup Services 17 • AppleCare Products 20 Purchase orders for all products may be submitted to: Apple Attn: Apple Education Sales Support 12545 Riata Vista Circle Mail Stop: 198-3ED Austin, TX 78727-6524 Phone: 1-800-800-2775 K-12 Fax: (512) 674-2992 Revisions to the March 17, 2008 Education Price List Effective April 15, 2008 PRODUCTS ADDED TO THE PRICE LIST BD624LL/A Apple Digital Learning Series: Digital Media Creation Kit 899.00 MB560Z/A NVIDIA GeForce 8800 GT Graphics Upgrade Kit 251.00 PRODUCTS REPRICED ON THE PRICE LIST MB137Z/A NVIDIA GeForce 8800 GT Graphics Upgrade Kit for Mac Pro 251.00 MB198Z/A ATI Radeon HD 2600 XT Graphics Upgrade Kit for Mac Pro 116.00 PRODUCTS REMOVED FROM THE PRICE LIST BC744LL/A Apple Digital Learning Series: Digital Media Creation Kit TM740LL/A Nike+ Armband w/ Window for nano-Black M9479LL/A AirPort Extreme Power Supply MA504G/A 750GB Serial ATA Apple Drive Module for Xserve MA598Z/A Apple MagSafe (Airline) Power Adapter Prices on this Price List supersede previous Price Lists. -
Mac OS X: an Introduction for Support Providers
Mac OS X: An Introduction for Support Providers Course Information Purpose of Course Mac OS X is the next-generation Macintosh operating system, utilizing a highly robust UNIX core with a brand new simplified user experience. It is the first successful attempt to provide a fully-functional graphical user experience in such an implementation without requiring the user to know or understand UNIX. This course is designed to provide a theoretical foundation for support providers seeking to provide user support for Mac OS X. It assumes the student has performed this role for Mac OS 9, and seeks to ground the student in Mac OS X using Mac OS 9 terms and concepts. Author: Robert Dorsett, manager, AppleCare Product Training & Readiness. Module Length: 2 hours Audience: Phone support, Apple Solutions Experts, Service Providers. Prerequisites: Experience supporting Mac OS 9 Course map: Operating Systems 101 Mac OS 9 and Cooperative Multitasking Mac OS X: Pre-emptive Multitasking and Protected Memory. Mac OS X: Symmetric Multiprocessing Components of Mac OS X The Layered Approach Darwin Core Services Graphics Services Application Environments Aqua Useful Mac OS X Jargon Bundles Frameworks Umbrella Frameworks Mac OS X Installation Initialization Options Installation Options Version 1.0 Copyright © 2001 by Apple Computer, Inc. All Rights Reserved. 1 Startup Keys Mac OS X Setup Assistant Mac OS 9 and Classic Standard Directory Names Quick Answers: Where do my __________ go? More Directory Names A Word on Paths Security UNIX and security Multiple user implementation Root Old Stuff in New Terms INITs in Mac OS X Fonts FKEYs Printing from Mac OS X Disk First Aid and Drive Setup Startup Items Mac OS 9 Control Panels and Functionality mapped to Mac OS X New Stuff to Check Out Review Questions Review Answers Further Reading Change history: 3/19/01: Removed comment about UFS volumes not being selectable by Startup Disk.