User manual FREECOM LTO-920ES

[. . . ] HP StorageWorks Ultrium SCSI Tape Drives User Guide Installation, Operating and Troubleshooting information for Ultrium half-height SCSI tape drives Part number: EH841-90903 First edition: September 2006 Legal and notice information © Copyright 2006 Hewlett-Packard Development Company, L. P. Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. This document contains proprietary information, which is protected by copyright. [. . . ] Do not use other format cartridges in your tape drive and do not use Ultrium cartridges in other format tape drives. For optimum performance always use a data cartridge that matches the specification of your tape drive, (see Table 3). A lower specification will have a lower transfer speed and may not support write activities; a higher specification will not support read or write. We recommend: · Ultrium 800 GB RW* and Ultrium 800 GB* WORM tape cartridges for use with Ultrium 920 tape drives. · Ultrium 400 GB* tape cartridges for use with Ultrium 448 tape drives. · Ultrium 200 GB* tape cartridges for use with Ultrium 232 tape drives. Table 3 Data cartridge compatibility Ultrium 200 GB* data cartridge HP StorageWorks Ultrium 920 HP StorageWorks Ultrium 448 HP StorageWorks Ultrium 232 Ultrium 400 GB* data cartridge Ultrium 800 GB* data cartridge Ultrium 800 GB* WORM cartridge read only read/write read/write (C7971A) read/write read/write (C7972A) no read/write (C7973A) no no read many/ write once no no * Capacity assumes 2:1 compression. HP Ultrium WORM data cartridges The HP StorageWorks Ultrium 920 tape drive includes support for both re-writable and Write-Once, Read-Many, WORM, data cartridges. WORM cartridges provide for an enhanced level of data security against accidental or malicious alteration of data on the tape cartridge. The WORM data cartridge can be appended to maximize the full capacity of the tape cartridge, but the user will be unable to erase or overwrite data on the cartridge. Any attempt to modify a WORM cartridge to enable writing over existing data will result in the media becoming permanently write protected. It should still be readable in a WORM drive, depending upon the severity of the tampering, but no further appended backups will be possible. HP StorageWorks Ultrium SCSI Tape Drives User Guide 43 WORM data cartridges are clearly identified by their distinctive, two-tone cartridge color. They do not have a write-protect slider and can only be used with Ultrium tape drives that support the WORM feature. To check whether your backup or archive software application supports WORM cartridges, refer to the following web site: www. hp. com/go/connect. For information on how your HP Ultrium StorageWorks 920 tape drive and WORM cartridge can help your business meet Information Lifecycle Management and regulatory compliance requirements, please refer to the HP Business Support Center at: www. hp. com. Write protecting cartridges If you want to protect the data on a cartridge from being altered or overwritten, you can write protect the cartridge. Figure 22 Write protecting a cartridge 1 Write-protect tab Always remove the cartridge from the tape drive before you change the write protection. · To write protect a cartridge, push the switch to the right to prevent any data recording on the cartridge. Note the padlock on the tab that indicates that the cartridge is protected. · To write enable a cartridge, push the switch to the left to allow data recording on the cartridge. Figure 22 illustrates the location of the write-protect tab 44 Use the correct media Write-protection will not protect your cartridges against magnets. Write-protection will not prevent a cartridge being erased by bulk-erasure or degaussing. Do not bulk erase Ultrium format cartridges. This will destroy pre-recorded servo information and make the cartridge unusable. Cleaning cartridges You must use Ultrium cleaning cartridges with HP StorageWorks Ultrium tape drives, as other cleaning cartridges will not load and run. [. . . ] There are two factors to consider: cable length and cable quality. Cable length · For single-ended SCSI with Fast devices there is a maximum permissible length of 6 meters for a single SCSI bus. 72 SCSI configuration guide · For single-ended SCSI with Ultra devices the maximum permissible length is 3 meters for four or fewer devices, and 1. 5 meters for more than four devices. · For LVD SCSI the maximum length for a single device is 25 meters. For multiple devices, the maximum combined internal/external length is 12 meters. · If you have a combination of LVD and SE devices on the bus, the maximum cable length reverts to the SE specification. [. . . ]