The replacement products for the NonStop LTO1 tape drives are products from the HP Ultrium LTO2 tape drive product family (product Ids N1522A, N1526A and N1527A). 

The HP Ultrium LTO-2 tape drives deliver significantly faster throughput and much higher per-media storage capacity than the LTO1 tape drives and are priced comparatively. 

The N1522A tape drive is a high performance tape drive designed for the NonStop server environment. This drive provides a formatted capacity of 400GB per cartridge for use in the SL500 Library.

The N1526A ACL rackmount tape drive is a high performance tape drive designed for the NonStop server environment. This rackmount tape drive provides a formatted capacity of 400GB per cartridge and a total of 6.0 terabytes and a sustained user data transfer rate of 30.0 MB's. (Replaces the N1524A)

The N1527A ACL tabletop tape drive is a high performance tape drive designed for the NonStop server environment. This tabletop tape drive provides a formatted capacity of 400GB per cartridge and a total of 6.0 terabytes and a sustained user data transfer rate of 30.0 MB's. (Replaces the N1525A)

The Ultrium LTO 460 tape drive is available in two configurations for use with HP NonStop S-series servers: an automatic cartridge loader (ACL)-equipped model       N1526A for use in a NonStop S-series tape rack enclosure, an (ACL)-equipped model N1527A for standalone tabletop use and a model N1521A for use with a CTL700 or CTL700M tape library.

The Auto Cartridge Loader (ACL) tape drives support the LTO Ultrium Gen 2 tape drive. They are designed for backup operations for S-Series and NS-Series NonStop servers.

Installation:

Installing N1522A,  N1526A and N1527A drives is as simple as connecting a 68 pin SCSI cable. Using Tandem’s standard SCSI cables, the N1526A and N1527A connects to either an S-series processor MFC SCSI port, the ServerNet  Device Adapter (ServerNet / DA) or the Integrity NonStop that has an appropriate interface installed.

Environmental Specifications

Product ID Description Power Requirements:
N1522A (CTL700 version) Unit installs into CTL700 tape library
N1526A 15−240V, 50−60 Hz, 1.8−1.2A
N1527+A 15−240V, 50−60 Hz, 1.8−1.2A

Dimensions (height x width x depth):
N1522A Unit installs into CTL700 tape library
N1526A Unit installs into NonStop S-series rack mount
N1527A 8 x 17.25 x 20.25 in (20.3 x 43.8 x 51.43 cm)

Weight:
N1522A 11.0 lb (5.0 kg)
N1526A 53.0 lb (24.0 kg)
N1527A 45.0 lb (20.5 kg)