Appendix C—Specifications Library Specifications
August 2017 User Guide—Spectra T50e Library
494
Power Consumption and Cooling Requirements
Thepowerandcoolingrequirementsforthelibrarydependonthenumber
oftapedrivesinstalled.Thefollowingtableprovidesthepower
consumptionandheatloadforthebaselibrarywithonepowersupplyand
withonedriveinstalled.Usethisinformationtocalculatethemaximum
powerconsumptionandheatloadvalues,whichcanbeusedtobuilda
powerbudgetforthelibrary.
AllvaluesaremeasuredattheACinputandincludepowersupply
efficiency.Thevaluesareaveragesofobservedhardware.Ingeneral,the
lightertheloadonthepowersupplies,thelessefficienttheyare.The
powersupplyefficiencyinturnaffectsthepowerdrawofallcomponents.
Environmental Specifications
Thissectiondescribesenvironmentalspecificationsforthelibrary.The
libraryisequippedwithinternalfanstokeepthelibrary’sinternal
temperaturewithinspecificationsaslongastheoperatingenvironmentis
withinspecifications.
Component Power Consumption
(watts)
Heat Load, Continuous
(BTU/hour)
Base library
a
Movingacartridge:31
Idle:24
Movingcartridges:106
Idle:82
LTO-3 full-height drive,
SCSI
b
Read/write:37
Idle:18
Read/write:126
LTO -4 h al f-h eig ht dr ive,
Fibre Channel or SAS
b
Read/write:39
Idle:19
Read/write:133
LTO -4 h al f-h eig ht dr ive,
SCSI
b
Read/write:37
Idle:18
Read/write:126
LTO -5 h al f-h eig ht dr ive,
Fibre Channel or SAS
b
Read/write:24
Idle:6
Read/write:82
LTO -6 h al f-h eig ht dr ive,
Fibre Channel or SAS
b
Read/write:24
Idle:6
Read/write:82
LTO -7 h al f-h eig ht dr ive,
Fibre Channel or SAS
b
Read/write:31
Idle:20
b
Read/write:106
a. Includes the chassis, the LCM, and one power supply. Does not include drives.
b. Includes the drive sled used to mount the drive in the library.
When the library is moved from a cold environment to a warm environment, it
should not be used for at least 24 hours. This adjustment period prevents
condensation damage.