HP LH4r HP Netserver LH 4 User Guide - Page 37
Installing Mass Storage Devices
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6 Installing Mass Storage Devices The NetServer chassis has space for two hot-swap mass storage shelves, and is shipped with a single hot-swap mass storage cage. If you need more storage than your configuration allows, you can purchase the HP NetServer Mass Storage Upgrade Kit to obtain a second hot-swap mass storage cage. Like the primary cage, the secondary cage can hold up to six low-profile Ultra2 hot-swap hard disk drives. There are two empty shelves in the non-hot-swap shelf area. These shelves can be used to install 3.5-inch or 5.25-inch SE SCSI mass storage devices, LUN tape drives, or other HP-tested accessories. Supported Mass Storage Devices NOTE Do not mix high voltage differential (HVD) driver and receiver devices with with SE, LVD, or multimode driver and receiver devices on the same SCSI bus. I/O circuits used by devices with SE, LVD (Ultra2) or multimode drivers and receivers do not operate at HVD levels and should never be exposed to HVD environments. If you mix SCSI SE and SCSI LVD (Ultra2) devices, system performance will be adversely affected. For best performance, use only LVD devices. The NetServer supports two classes of mass storage devices: SCSI devices installed in the two non-hot-swap shelves next to the CD-ROM player and the flexible disk drive, and the Ultra2 SCSI hot-swap hard disk drives installed in the hot-swap mass storage cage. If you need additional mass storage capacity, you can order a second hot-swap mass storage cage. Use only high-performance Ultra2 hot-swap drives in the hot-swap mass storage cage. You can add any standard (non-Ultra2) wide, single-ended SCSI device in the two non-hot-swap shelves, such as removable hard disk drives or tape backups. Use the SE connector on the provided cable. For the latest list of HP-tested products, refer to the "Tested Products List" Help topic on the HP NetServer Navigator CD-ROM. 31