Dell DC, 3- Manuals

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 5 of 29 3.0 Overview of Steps Ensuring RAID Best Practices. Cabling Practices • Assure that properly qualified cables are being used • Assure that SCSI cables are properly secured to the PV22x and controller. • Verify cables are not ...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 6 of 29 4.0 Cabling Practices 4.1 Only properly qualified cables should be used The SCSI standard has been through several iterations with speed increases at each change in the standard. The result is that there are several different...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 7 of 29 5.0 Maintenance of Arrays. RAID arrays are an industry standard for the protection of important data through redundancy. This redundancy may take the form of parity calculations that are dispersed throughout the array. It cou...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 8 of 29 Consistency Check Consistency check is a data level check that both verifies data inside the block or stripe, as well as checks for bad blocks. Consistency check will perform read operations on both the user data areas of the...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 9 of 29 5.1 Setup for automated scheduling of consistency checks on Windows systems. 1. For systems with a Windows OS system and Array Manager installed, you can use the ‘Scheduled Tasks’ option from the menu under the ‘ Accessories’...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 10 of 29 2. Click ‘ Next ’ and the following screen will appear: 3. Click ‘ Browse ’ and locate the file ‘amcli.exe’. The AMCLI executable is located in the Array Manager installation directory. 4. Select the file and click ‘ OK ’. 5...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 11 of 29 7. Click ‘ Next ’ and the following screen will appear: 8. Select the time at which the Consistency Check should run. Remember that there will be a system performance impact so you want to run this at a low traffic time. 9. ...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 13 of 29 13. Click ‘ Finish ’ and the following screen will appear: 14. In the ‘ Run ’ textbox you can type different parameters. The following is example syntax for scheduling a check consistency on virtual disk 1. ‘ "C:\ PathNa...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 15 of 29 5.2 Upgrade firmware, drivers and Array Manager concurrently to the latest versions. Enclosure firmware, RAID controller firmware, the RAID controller driver, and Array Manager are maintained in block releases. These block r...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 17 of 29 5.4 Monitor System Event Logs and Array Manager Event Logs. System Events are generated for informational purposes, such as for record-keeping activities, or for notifying the user of events that may affect the physical secu...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 18 of 29 You will also be able to get the events from any Netware server with the Windows console. These events will be shown on the Array Manager Event Log. The use of Array Manager is recommended for Windows or Netware based OS. 5....

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 19 of 29 You should alternatively use Array Manager for Netware-based systems to retrieve issue information. All the latest Array Manager versions for Windows and Netware offer the ability to retrieve NVRAM information for all the RA...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 20 of 29 Appendix. To avoid loss of data integrity or the recovery of lost arrays the following steps should be followed: PERC 3\SC\DC\QC and PERC 4\SC\DC\Di RAID rebuild behavior 1.1 Pre-May 2003 behavior When a media error is found...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 23 of 29 Screenshot for Array Manager:

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 24 of 29 1.3 Array Manager Online help files The online help for Array Manager was modified to include more information and explanation for the above message “Completed with Errors”. The following is the content added to the last ver...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 26 of 29 3. After changing the switch to Split Bus Mode, power down both servers and reboot the PV220s/PV221s. 4. After the PV220s/PV221s has been rebooted, power up each of the attached servers. 5. Failure to power cycle in this ins...

Maintenance Best Practices for Direct-Attached SCSI Solutions Page 27 of 29 Customer using Linux DellMgr utility. The administrator will see the percentage increase from 0% to 100% and change to “INCON” as follows: As in the case of Ctrl-M application, DellMgr does not message when media errors are ...