User Guide
Page 27
... of parity data instead of one disk drive is a mirror of disk drives required by each disk drive). Redundancy, but includes a distributed spare and must connect to your Adaptec RAID controller, including the minimum and maximum number of the other (the same data is mirrored and striped, and more equal-sized RAID 1 arrays, stripes and mirrors data across multiple...
... of parity data instead of one disk drive is a mirror of disk drives required by each disk drive). Redundancy, but includes a distributed spare and must connect to your Adaptec RAID controller, including the minimum and maximum number of the other (the same data is mirrored and striped, and more equal-sized RAID 1 arrays, stripes and mirrors data across multiple...
User Guide
Page 68
... 50 percent of independent disk drives. Appendix B: Understanding RAID ● 68 RAID 1 Arrays A RAID 1 array is built from two disk drives, where one disk drive is a mirror of the other (the same data is stored on the stripe size, the maximum number of disk drives ranges from eight to sixteen. Compared to independent disk drives, RAID 1 arrays provide improved performance, with...
... 50 percent of independent disk drives. Appendix B: Understanding RAID ● 68 RAID 1 Arrays A RAID 1 array is built from two disk drives, where one disk drive is a mirror of the other (the same data is stored on the stripe size, the maximum number of disk drives ranges from eight to sixteen. Compared to independent disk drives, RAID 1 arrays provide improved performance, with...
User Guide
Page 69
... Disk Drive) Disk Drive 2 250 GB Disk Drive 3 400 GB Disk Drive 4 400 GB Disk Drives in a RAID 10 array is both striped and mirrored. For instance, an array with two 250 GB disk drives and two 400 GB disk drives can create two mirrored drive segments of 250 GB, for a total of 128 disk drives in this figure. Adaptec RAID controllers support a maximum...
... Disk Drive) Disk Drive 2 250 GB Disk Drive 3 400 GB Disk Drive 4 400 GB Disk Drives in a RAID 10 array is both striped and mirrored. For instance, an array with two 250 GB disk drives and two 400 GB disk drives can create two mirrored drive segments of 250 GB, for a total of 128 disk drives in this figure. Adaptec RAID controllers support a maximum...
User Guide
Page 70
...that's used to provide redundancy. Disk Drive 1 250 GB Drive Segment Size (Smallest Disk Drive) Disk Drive 2 250 GB Disk Drive 3 400 GB Disk Drive 4 400 GB Disk Drives in the next figure) is built from a minimum of three and a maximum of sixteen disk drives, and uses data striping and parity data...data provides data protection, and striping improves performance. Appendix B: Understanding RAID ● 70 RAID 5 Arrays A RAID 5 array is striped evenly across the disk drives with two 250 GB disk drives and two 400 GB disk drives can contain 750 GB of stored data and 250 GB of parity...
...that's used to provide redundancy. Disk Drive 1 250 GB Drive Segment Size (Smallest Disk Drive) Disk Drive 2 250 GB Disk Drive 3 400 GB Disk Drive 4 400 GB Disk Drives in the next figure) is built from a minimum of three and a maximum of sixteen disk drives, and uses data striping and parity data...data provides data protection, and striping improves performance. Appendix B: Understanding RAID ● 70 RAID 5 Arrays A RAID 5 array is striped evenly across the disk drives with two 250 GB disk drives and two 400 GB disk drives can contain 750 GB of stored data and 250 GB of parity...
User Guide
Page 71
..., P represents the distributed parity data. The maximum number of disk drives is rebuilt following a disk drive failure. A RAID 5EE array protects your data and increases read and write speeds. Disk Drive 1 250 GB Drive Segment Size (Smallest Disk Drive) Disk Drive 2 250 GB Disk Drive 3 400 GB Disk Drive 4 400 GB Disk Drives in Logical Drive Disk Drive 1 1 S ... Unlike a hot spare, a distributed spare is...
..., P represents the distributed parity data. The maximum number of disk drives is rebuilt following a disk drive failure. A RAID 5EE array protects your data and increases read and write speeds. Disk Drive 1 250 GB Drive Segment Size (Smallest Disk Drive) Disk Drive 2 250 GB Disk Drive 3 400 GB Disk Drive 4 400 GB Disk Drives in Logical Drive Disk Drive 1 1 S ... Unlike a hot spare, a distributed spare is...
User Guide
Page 73
... are striped separately across all disk drives in Logical Drive Disk Drive 1 1 P1 ... Maximum stripe size depends on the number of parity data provide enhanced data protection, and striping improves performance. Note: Because the Adaptec 2420SA RAID controller doesn't support more than four disk drives, it uses data striping and parity data to a maximum of one. P1 Unused Space = 150...
... are striped separately across all disk drives in Logical Drive Disk Drive 1 1 P1 ... Maximum stripe size depends on the number of parity data provide enhanced data protection, and striping improves performance. Note: Because the Adaptec 2420SA RAID controller doesn't support more than four disk drives, it uses data striping and parity data to a maximum of one. P1 Unused Space = 150...
User Guide
Page 87
...hot spares to assign to the controller. No default. Default is 256. Default is Maximum. No default See page 90. No Indicates whether write caching is enabled for this array. Separate multiple disk drive identifiers with the keyword End.... should wait for example, 0:0:0 or 0:1:0. There is initialized, which destroys any drives specified by colons; For example: Drives=0:0:0 Drives=0:0:0,0:1:0,0:2:0 Keyword Array Drives End HotspareDrives InitializeAll Method ReadCache Size StripeSize Type Wait WriteCache Required? No default. No Indicates whether read caching is ...
...hot spares to assign to the controller. No default. Default is 256. Default is Maximum. No default See page 90. No Indicates whether write caching is enabled for this array. Separate multiple disk drive identifiers with the keyword End.... should wait for example, 0:0:0 or 0:1:0. There is initialized, which destroys any drives specified by colons; For example: Drives=0:0:0 Drives=0:0:0,0:1:0,0:2:0 Keyword Array Drives End HotspareDrives InitializeAll Method ReadCache Size StripeSize Type Wait WriteCache Required? No default. No Indicates whether read caching is ...
User Guide
Page 89
...=256 Possible values: ● Build (the default)-Perform a Build/Verify process on the array type and drives selected. Maximum performance is 256. The possible values for DOS ● 89 Method Keyword Method is written to the disk...-Disable read caching. For example: ReadCache=Yes Size Keyword The Size keyword specifies the size of a striped array (RAID 0, RAID 5, or RAID 10). For example: Size=2.5GB Size=300MB Size=Maximum StripeSize Keyword The StripeSize keyword specifies the stripe size (in MB) written to use when creating a redundant (RAID 1, 5, and 10) array. For example:...
...=256 Possible values: ● Build (the default)-Perform a Build/Verify process on the array type and drives selected. Maximum performance is 256. The possible values for DOS ● 89 Method Keyword Method is written to the disk...-Disable read caching. For example: ReadCache=Yes Size Keyword The Size keyword specifies the size of a striped array (RAID 0, RAID 5, or RAID 10). For example: Size=2.5GB Size=300MB Size=Maximum StripeSize Keyword The StripeSize keyword specifies the stripe size (in MB) written to use when creating a redundant (RAID 1, 5, and 10) array. For example:...
User Guide
Page 91
... ACU was unable to get the configuration information from the specified controller. 6 No drives detected. 7 Specified drive not found in this array. 9 Specified array size too big-You specified an array size that is larger than the maximum number of hot spares allowed for DOS ● 91 ControllerID ...code to the log file. The possible error messages returned by Adaptec Technical Support. Appendix D: Using the ACU for the specified array. 14 Insufficient memory to run the application. 15 Incorrect controller number. 16 Controller not responding. 17 Build/Verify/Clear failed. 100 You ran ...
... ACU was unable to get the configuration information from the specified controller. 6 No drives detected. 7 Specified drive not found in this array. 9 Specified array size too big-You specified an array size that is larger than the maximum number of hot spares allowed for DOS ● 91 ControllerID ...code to the log file. The possible error messages returned by Adaptec Technical Support. Appendix D: Using the ACU for the specified array. 14 Insufficient memory to run the application. 15 Incorrect controller number. 16 Controller not responding. 17 Build/Verify/Clear failed. 100 You ran ...
User Guide
Page 92
...=MyMirror Type=RAID1 Size=2GB # Use drives 1 and 2 Drives=0:1:0,0:2:0 # Disable write cache WriteCache=No # Assign 1 spare drive HotspareDrives=0:3:0 End This sample script file creates a maximum-size three-disk-drive RAID 5: # Create a maximum size RAID 5 labeled 'MyData' Array=MyData Type=RAID5 Size=Maximum # Use the maximum stripe size StripeSize=256 # Clear the array (don't build/verify it) Method=Clear # Don't wait for a SATA controller, see page 93...
...=MyMirror Type=RAID1 Size=2GB # Use drives 1 and 2 Drives=0:1:0,0:2:0 # Disable write cache WriteCache=No # Assign 1 spare drive HotspareDrives=0:3:0 End This sample script file creates a maximum-size three-disk-drive RAID 5: # Create a maximum size RAID 5 labeled 'MyData' Array=MyData Type=RAID5 Size=Maximum # Use the maximum stripe size StripeSize=256 # Clear the array (don't build/verify it) Method=Clear # Don't wait for a SATA controller, see page 93...
User Guide
Page 93
Controller= 0,5:7:0 Controller Name=Adaptec Adaptec 2820SA Subsystem ID=0x2A1 Firmware Version=V5.1-0[6792] Total Ports=8 Port 0 = 0:0:0 Maxtor 279.479GB 279.395GB Port 1 = 0:1:0 Maxtor 279.479GB 279.395GB Port 2 = 0:2:0 Maxtor 279.479GB 279.395GB Array=MyData2 Type=RAID5 Size=Maximum InitializeAll=Yes Method=Build/Verify Wait=No Drives=0:0:0, 0:1:0, 0:2:0 End Appendix D: Using the ACU for DOS ● 93 Sample Script for...
Controller= 0,5:7:0 Controller Name=Adaptec Adaptec 2820SA Subsystem ID=0x2A1 Firmware Version=V5.1-0[6792] Total Ports=8 Port 0 = 0:0:0 Maxtor 279.479GB 279.395GB Port 1 = 0:1:0 Maxtor 279.479GB 279.395GB Port 2 = 0:2:0 Maxtor 279.479GB 279.395GB Array=MyData2 Type=RAID5 Size=Maximum InitializeAll=Yes Method=Build/Verify Wait=No Drives=0:0:0, 0:1:0, 0:2:0 End Appendix D: Using the ACU for DOS ● 93 Sample Script for...