Hardware Components; Scsi Hba Issues; Iscsi Hba Issues - Spectra Logic T-Series Spectra T50 Release Note

Important Information

Hardware Components

SCSI HBA Issues

Adaptec SCSI HBAs
Spectra Logic does not support the use of the Adaptec 29320 SCSI card with any
Spectra Logic library. Note, however, that the Adaptec 29320A SCSI is supported.
LSI SCSI HBAs
LTO-4 SCSI drive firmware release 79M1 and greater permits the use of the LSI adaptor.
The 79M1 release may also be referred to as release _79M1 or 0709201_79M1.

iSCSI HBA Issues

Reservation Issues
The SCSI reservation option makes it possible to reserve a device (target) for a specific
host (initiator). This is useful in a multi-server environment where more than one
server is connected to an iSCSI device. When an initiator reserves a device, other
initiators are not allowed to change the characteristics of that device until the
reservation is released. This prevents one system from interfering with another
system's backup.
If a device is reserved for a specific initiator, and another one attempts to access that
device, a reservation conflict is reported back to the second system. In Microsoft
Windows operating systems, all iSCSI HBAs report this reservation conflict as an I/O
error instead of correctly reporting a reservation conflict.
Additional Known Issues
In addition to the reservation conflict issue, certain brands of iSCSI HBAs have the
following other known issues:
Adaptec 7211 iSCSI HBA This iSCSI HBA is not supported by the library.
Intel PRO 1000/T iSCSI HBA
Both discovery sessions and login sessions fail when CHAP (Challenge Handshake
Authentication Protocol) is enabled. Spectra Logic recommends that you disable
CHAP authentication when configuring an iSCSI partition on the library. Disable
CHAP on the HBA as well.
Intel has a special driver for the Windows platforms that must be installed to
prevent Auto Request Sense from being issued on SCSI errors. The driver name is
30ipspecial.exe
30ipstorage.exe
10
. This driver should be used instead of the standard
.