Unix Backup and Recovery

Hardware Comparison

Table 18-4 summarizes the information in this chapter. It contains an exhaustive list of the types of Unix-compatible storage devices available to you. Some drives, like the 4-mm, 8-mm, CD-R, and M-O drives, are made by a number of manufacturers. The specifications listed for these drives therefore should be considered approximations. Check the actual manufacturer of the drive you intend to purchase for specific information.

Table 18-4. Backup Hardware Comparison

Model Name or Generic Name	Vendor	Media Type, Comments, (Expected release date)	H/L	Capacity (Giga-bytes)	MB/s	Avg Load Time (sec)	Avg Seek Time (sec)
DST 312	Ampex	DST	H	50-330	15/20
8205XL	Exabyte et al.	8-mm	H	3.5	275 K
8505XL	Exabyte et al.	8-mm	H	7	500 K
8900—Mammoth	Exabyte et al.	AME 8-mm	H	20	3	20
DDS-1	Various	Very rare	H	1.3	250 K
DDS-2	Various	DDS	H	4	510 K		20
DDS-3	Various	DDS	H	12	1.6
DDS-DC	Various	DDS	H	2	250 K
3570—Magstar MP	IBM	Midpoint load		5	2.2
3590	IBM	3590		10	9
3480	Various	3480	L	200 MB	3	13
3490	Various	3490	L	600 MB	3	13
3490E	Various	3490E	L	800 MB	3	13
DTR-48	Metrum	M-II		36	48
Model 64	Metrum	Super VHS		27.5	64
LMS NCTP	Plasmon	3480 3490E		18	10	30	81
DLT 2000XT	Quantum	Very rare	H	15	1.25	45	45
DLT4000	Quantum	DLT	L	20	1.5	45	68
DLT7000	Quantum	DLT	L	35	5	40	60
Super DLT	Quantum	(Release date unknown)		100-500