My storage daemon hardware: Microsemi Adaptec HBA 1100 4i - Speicher-Controller - 4 Sender/Kanal - SATA 6Gb/s / SAS 12Gb/s Low Profile - 1.2 GBps Quantum LTO-7 HH - Bandlaufwerk - LTO Ultrium (6 TB / 15 TB) - Ultrium 7 - SAS-2 - intern A separate Seagate IronWolf NAS HDD 4TB, SATA 6Gb/s (ST4000VN008) is used for spooling partition only.
The SATA HDD is plugged on the main board's SATA Port. 300 MB/s = 2,4 Gb/s, so the 6 Gb/s should be OK. Taking a look to the last job: Despooling elapsed time = 03:13:27, Transfer rate = 99.29 M Bytes/second Maybe a solution to plug the HDD directly to the SAS controller? Thanks for help Wolfgang, Frank wd schrieb am Dienstag, 6. April 2021 um 11:06:09 UTC+2: > Dear Frank, > > In message <[email protected]> you wrote: > > > > I use Ultrium 7 tapes with 6 / 15 TB storage capacity. So I do expect a > > minimum of 6 TB in worst case (without compression). > ... > > When I now calclulate the present 2.55 TB + 1,2 TB in queue = 3,75 TB, > less > > than 6 TB for LTO-7 > > The spec for LTO 7 gives a sustained data rate of 300 MB/s. Check > if your storage daemon can feed the drive with such a rate; > otherwise the drive will run in start-stop mode which is slow, causes > increased wear on the drive and the tapes, and results in a serious > degradation of capacity - as you are seeing here. > > > Best regards, > > Wolfgang Denk > > -- > DENX Software Engineering GmbH, Managing Director: Wolfgang Denk > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: (+49)-8142-66989-10 <+49%208142%206698910> Fax: (+49)-8142-66989-80 > <+49%208142%206698980> Email: [email protected] > Living on Earth may be expensive, but it includes an annual free trip > around the Sun. > -- You received this message because you are subscribed to the Google Groups "bareos-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/bareos-users/b35f044f-ec9b-4fe9-b338-f7ac822e3c4cn%40googlegroups.com.
