APC iSCSI SATA II user manual

User manual for the device APC iSCSI SATA II

Device: APC iSCSI SATA II
Size: 3,10 MB
Date of adding : 2014-08-21 14:15:18
Number of pages: 93
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APC iSCSI SATA II user manual
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Abstracts of contents
Summary of the content on the page No. 1













iSCSI – SATA II
RAID SUBSYSTEM



Installation and Configuration
Manual










Revision 1.0










P/N: PW0020000000328

Summary of the content on the page No. 2

Table of Contents Chapter 1 Introduction...........................................................................................4 1.1 Key Features........................................................................................................................................................5 1.2 Technical Specifications..................................................................................................................................6 1.3 Terminology ....

Summary of the content on the page No. 3

3.5.1 Entity Property........................................................................................................................................ 38 3.5.2 NIC............................................................................................................................................................... 39 3.5.3 Node...................................................................................................................................................

Summary of the content on the page No. 4

Chapter 1 Introduction The iSCSI RAID Subsystem The iSCSI RAID subsystem is a 4-bay disk array based on hardware RAID configuration. It is an easy-to-use storage system which can be configured to any RAID level. It provides reliable data protection for servers, and the RAID 6 function is available. The RAID 6 function allows failure of two disk drives without any impact on the existing data. Data can be recovered from the remaining data and parity drives

Summary of the content on the page No. 5

1.1 Key Features Front-end 2 x 1Gigabit port full iSCSI offload Supports iSCSI jumbo frame Supports RAID levels 0, 1, 0+1, 3, 5, 6, 10 and JBOD Global hot spare disks Write-through or write-back cache policy for different application usage Supports greater than 2TB per volume set (64-bit LBA support) RAID level migration Online volume expansion Configurable RAID stripe size Instant RAID volume availability and background initialization Supports S.M.A.R.T, NCQ and Sta

Summary of the content on the page No. 6

1.2 Technical Specifications Form Factor : 1U 19-inch rackmount chassis RAID processor : Instant RAID volume availability and Intel XScale IOP331 background initialization support RAID Level : Supports over 2TB per volume 0, 1, 0+1, 3, 5, 6, 10 and JBOD Cache memory : Online consistency check 512MB ~ 1GB DDR333 DIMM supported No. of channels (host and drives) : Bad block auto-remapping 2 and 4 Host bus interface :1Gb/s Ethernet S.M.A.R.T. support Drive bus inter

Summary of the content on the page No. 7

1.3 Terminology The document uses the following terms: RAID RAID is the abbreviation of “Redundant Array of Independent Disks”. There are different RAID levels with different degree of the data protection, data availability, and performance to host environment. PD The Physical Disk belongs to the member disk of one specific RAID group. RG Raid Group. A collection of removable media. One RG consists of a set of VDs and owns one RAID level attribute. VD Virtual Disk. Each RD c

Summary of the content on the page No. 8

DS Dedicated Spare disks. The spare disks are only used by one specific RG. Others could not use these dedicated spare disks for any rebuilding purpose. GS Global Spare disks. GS is shared for rebuilding purpose. If some RGs need to use the global spare disks for rebuilding, they could get the spare disks out from the common spare disks pool for such requirement. DC Dedicated Cache. GC Global Cache. DG DeGraded mode. Not all of the array’s member disks are functioning, but the arra

Summary of the content on the page No. 9

1.4 RAID Concepts RAID Fundamentals The basic idea of RAID (Redundant Array of Independent Disks) is to combine multiple inexpensive disk drives into an array of disk drives to obtain performance, capacity and reliability that exceeds that of a single large drive. The array of drives appears to the host computer as a single logical drive. Five types of array architectures, RAID 1 through RAID 5, were originally defined; each provides disk fault-tolerance with different compromises

Summary of the content on the page No. 10

Definition of RAID Levels RAID 0 is typically defined as a group of striped disk drives without parity or data redundancy. RAID 0 arrays can be configured with large stripes for multi-user environments or small stripes for single-user systems that access long sequential records. RAID 0 arrays deliver the best data storage efficiency and performance of any array type. The disadvantage is that if one drive in a RAID 0 array fails, the entire array fails. RAID 1, also known as

Summary of the content on the page No. 11

RAID 3 sector-stripes data across groups of drives, but one drive in the group is dedicated to storing parity information. RAID 3 relies on the embedded ECC in each sector for error detection. In the case of drive failure, data recovery is accomplished by calculating the exclusive OR (XOR) of the information recorded on the remaining drives. Records typically span all drives, which optimizes the disk transfer rate. Because each I/O request accesses every drive in the array, RAID 3 array

Summary of the content on the page No. 12

Dual-level RAID achieves a balance between the increased data availability inherent in RAID 1 and RAID 5 and the increased read performance inherent in disk striping (RAID 0). These arrays are sometimes referred to as RAID 0+1 or RAID 10 and RAID 0+5 or RAID 50. RAID 6 is similar to RAID 5 in that data protection is achieved by writing parity information to the physical drives in the array. With RAID 6, however, two sets of parity data are used. These two sets are different, and each

Summary of the content on the page No. 13

RAID Management The subsystem can implement several different levels of RAID technology. RAID levels supported by the subsystem are shown below. RAID Level Description Min. Drives Block striping is provide, which yields higher 0 performance than with individual drives. There is 1 no redundancy. Drives are paired and mirrored. All data is 100% 1 duplicated on an equivalent drive. Fully 2 redundant. N-way Extension of RAID 1 level. It has N copies of the N mirror disk. Data is s

Summary of the content on the page No. 14

1.5 Volume Relationship Diagram LUN 1 LUN 2 LUN 3 VD 1 VD 2 VD 3 + + + RG Global CV Dedicated CV PD 1 PD 2 PD 3 DS RAM This diagram shows how the volume structure of the iSCSI RAID subsystem is designed. It describes the relationship of RAID components. One RG (RAID group) consists of a set of VDs (Virtual disk) and owns one RAID level attribute. Each RG can be divided into several VDs. The VDs in one RG share the same RAID level, but may

Summary of the content on the page No. 15

Chapter 2 Getting Started 2.1 Packaging, Shipment and Delivery Before removing the subsystem from the shipping carton, you should visually inspect the physical condition of the shipping carton. Unpack the subsystem and verify that the contents of the shipping carton are all there and in good condition. Exterior damage to the shipping carton may indicate that the contents of the carton are damaged. If any damage is found, do not remove the components; contact the dealer whe

Summary of the content on the page No. 16

2.3 Identifying Parts of the iSCSI RAID Subsystem The illustrations below identify the various parts of the subsystem. 2.3.1 Front View 32 1 4 5 6 7 1 Carrier Open Button – Use this to open the disk tray. Press the button to open. This button also shows the Lock Indicator. When the Lock Groove is horizontal, this indicates that the Drive Tray is locked. When the Lock Groove is vertical, the Drive Tray is

Summary of the content on the page No. 17

5 LCD Display Panel 6 LCD Control Module (LCM) Use the function keys to navigate through the menu options available in the LCM. Parts Function Up and Down Use the Up or Down arrow keys to go Arrow buttons through the information on the LCD screen. This is also used to move between each menu when you configure the subsystem. This is used to enter the option you have Select button selected. Press this button to return to the Exit button

Summary of the content on the page No. 18

2.3.2 Rear View 1. Uninterruptible Power Supply (UPS) Port (APC Smart UPS only) The subsystem may come with an optional UPS port allowing you to connect a APC Smart UPS device. Connect the cable from the UPS device to the UPS port located at the rear of the subsystem. This will automatically allow the subsystem to use the functions and features of the UPS. 2. RS232 Port The subsystem is equipped with an RS232 serial port allowing you to connect a PC or terminal. Use the

Summary of the content on the page No. 19

2.4 Connecting the iSCSI RAID Subsystem to Your Network To connect the iSCSI unit to the network, insert the cable that came with the unit into the Gigabit network port (LAN1) on the back of iSCSI unit. Insert the other end into a Gigabit BASE-T Ethernet connection on your network hub or switch. You may connect the other network port LAN2 if needed. For remote management of the iSCSI RAID subsystem, connect the R-Link port to your network. 2.5 Powering On 1. Plu

Summary of the content on the page No. 20

2.6 Installing Hard Drives The expansion chassis supports hot-swapping allowing you to install or replace a hard drive while the subsystem is running. Each Drive Carrier has a locking mechanism. When the Lock Groove is horizontal, this indicates that the Drive Carrier is locked. When the Lock Groove is vertical, the Drive Carrier is unlocked. Lock and unlock the Drive Carriers by using a flat- head screw driver. The Lock Grooves are located on the carrier open button. a. Press


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