User manual ACER VERITON D461

[. . . ] 20 8. 1 BUILD THE RAID DRIVER ON A FLOPPY DISK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 8. 2 PRE-INSTALLATION USING THE "F6" PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3/21 Intel Matrix Storage Manager Quick Guide for Acer Selected Veriton PC V1. 1 1. Introduction This document will assist customers in evaluating, configuring and enabling RAID functionality on Acer RAID Ready platforms using the Intel® Matrix Storage Manager software. [. . . ] · RAID1 volume capacity = capacity of smallest HDD · Such an array can only be as large as the smallest member disk. D is k 1 B lo c k 1 B lo c k 2 B lo c k 3 B lo c k 4 D is k 2 B lo c k 1 B lo c k 2 B lo c k 3 B lo c k 4 L o g ic a l d is k P h y s ic a l d is k s B lo c k 1 R A ID 1 B lo c k 2 B lo c k 3 B lo c k 4 P h y s ic a l d is k s 120 GB P h y s ic a l d is k s 120 GB L o g ic a l d is k s 120 GB RAID5 (striping with parity) · RAID5 uses block-level striping with parity data distributed across all member disks. · A RAID5 array can withstand a single disk failure without losing data or access to data. · RAID5 is a good all-round system that combines efficient storage with excellent security and decent performance. It is ideal for file and application servers. · RAID5 volume capacity = [(number of HDDs) - 1] x (capacity of smallest HDD) 6/21 Intel Matrix Storage Manager Quick Guide for Acer Selected Veriton PC V1. 1 Disk 1 Block A1 Block B1 Block Cp Disk 2 Block A2 Block Bp Block C1 Disk 3 Block Ap Block B2 Block C2 Physical disks 120 GB Physical disk 120 GB Physical disk 120 GB Logical disks 240 GB RAID10 (RAID1+0: striping + mirroring) · A combination of RAID1 and RAID0 -- mirroring and striping, but without parity. · RAID10 is used for both replicating and sharing data among disks. · RAID10 is often the primary choice for high-load databases, because the lack of parity to calculate gives it faster write speeds. · RAID10 volume capacity = 2 x (capacity of smallest HDD) RAID 0 RAID 1 Disk 1 Block A1 Block A3 Block A5 RAID 1 Disk 3 Block A2 Block A4 Block A6 Disk 2 Block A1 Block A3 Block A5 Disk 4 Block A2 Block A4 Block A6 Physical disks 120 GB Physical disks 120 GB Physical disks 120 GB Physical disks 120 GB Logical disks 240 GB Characteristics/Advantages RAID0 RAID0 implements a striped disk array, the data is broken down into blocks and each block is written to a separate disk drive I/O performance is greatly improved by spreading the I/O load across many channels and drives Best performance is achieved when data is striped across Disadvantages Not a "True" RAID because it is NOT fault-tolerant The failure of just one drive will result in all data in an array being lost Should never be used in mission-critical environments 7/21 Intel Matrix Storage Manager Quick Guide for Acer Selected Veriton PC V1. 1 multiple controllers with only one drive per controller Very simple design Easy to implement RAID1 Twice the Read transaction rate of single disks, same Write transaction rate as single disks 100 percent redundancy of data means no rebuild is necessary in case of a disk failure, just a copy to the replacement disk Transfer rate per block is equal to that of a single disk Under certain circumstances, RAID1 can sustain multiple simultaneous drive failures Simplest RAID storage subsystem design RAID5 Highest Read data transaction rate Medium Write data transaction rate Low ratio of ECC (parity) disks to data disks means high efficiency Good aggregate transfer rate RAID10 Very high I/O rates are achieved by striping RAID1 segments Excellent solution for sites that would normally use RAID1 Most complex controller design Difficult to rebuild in the event of a disk failure (as compared to RAID 1) Individual block data transfer rate same as single disk Very limited scalability at a very high inherent cost Expensive to maintain Highest disk overhead of all RAID types (100%) -- inefficient May not support hot-swap of failed disk when implemented using software RAID 8/21 Intel Matrix Storage Manager Quick Guide for Acer Selected Veriton PC V1. 1 3. Using the Intel® Matrix Storage Console in Windows® is highly recommended. You may use Intel Matrix Storage manager console in Windows for most RAID functions. However, using the Intel® Matrix Storage Manager option ROM (accessed by pressing Ctrl-I when starting your computer) is NOT recommended, because it will reformat the hard disk and Acer eRecovery Management's Restore to Factory Defaults function will NOT be usable anymore. It is important to understand what will occur during the migration process because all data on the destination hard drive will be lost. After the migration is complete, reboot the system. If you migrate to a RAID0 volume, use Disk Management from Windows in order to partition and format the empty space created when the two hard drive capacities are combined. You may also use third-party software to extend any existing partitions within the RAID volume. 17/21 Intel Matrix Storage Manager Quick Guide for Acer Selected Veriton PC V1. 1 6. Configuring an existing HDD as a RAID0 or RAID1 volume If you are booting from a single SATA hard drive that contains program or personal data, you may use the migration feature to use this hard drive as the source hard drive for a migration. Click the View menu and select the Advanced Mode option. Choose the RAID volume you want to migrate. The Modify RAID Volume Wizard will be displayed. The wizard will walk you through the procedure to migrate to RAID5. After the migration starts, the Information tab shows the migration progress in the Status field. When the Status field indicates Normal, the migration is complete. 19/21 Intel Matrix Storage Manager Quick Guide for Acer Selected Veriton PC V1. 1 8. [. . . ] If this is not the case, press F6 when prompted at the beginning of Windows setup. Press the 'S' key to select Specify Additional Device. The user will be prompted to insert a floppy disk containing the manufacturer-supplied driver into the A: drive. (See Section 7. 3 for instructions 20/21 Intel Matrix Storage Manager Quick Guide for Acer Selected Veriton PC V1. 1 on making a driver installation disk. ) 4. [. . . ]